diff --git a/.gitignore b/.gitignore
index c132a53..bb2217d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,4 +3,5 @@ uploads/
 users.json
 .DS_Store
 *.log
-camera-settings.json
\ No newline at end of file
+camera-settings.json
+openai.key
\ No newline at end of file
diff --git a/README.md b/README.md
index c661c40..334f4f1 100644
--- a/README.md
+++ b/README.md
@@ -162,7 +162,7 @@ curl -H "X-API-Key: your-secret-key" http://localhost:3080/stats/front-door
 GET /settings/:cameraId
 ```
 
-Get v4l2 camera settings (focus, exposure, etc.) for a camera.
+Get v4l2 camera settings (focus, exposure, etc.) for a camera. The camclient automatically registers available controls on first connection.
 
 **Example:**
 ```bash
@@ -173,13 +173,44 @@ curl -H "X-API-Key: your-secret-key" http://localhost:3080/settings/front-door
 ```json
 {
   "cameraId": "front-door",
-  "settings": {
-    "focus_automatic_continuous": 0,
-    "focus_absolute": 30,
-    "exposure_auto": 1,
-    "exposure_absolute": 200,
+  "availableControls": [
+    {"name": "brightness", "type": "int", "min": -64, "max": 64, "step": 1, "default": 0},
+    {"name": "exposure_auto", "type": "menu", "min": 0, "max": 3, "default": 3, "options": {"1": "Manual Mode", "3": "Aperture Priority Mode"}}
+  ],
+  "values": {
+    "brightness": 10,
+    "focus_absolute": 40
+  },
+  "config": {
+    "rotation": null,
+    "crop": null,
+    "ocr": null,
+    "chartLabel": null,
+    "insertBrightnessToDb": false
+  },
+  "updatedAt": "2025-12-21T22:00:00.000Z",
+  "updatedBy": "webcam1"
+}
+```
+
+### Register Available Controls
+
+```bash
+POST /settings/:cameraId/available
+```
+
+Called by the camclient to register all available v4l2 controls with their metadata. The camclient parses `v4l2-ctl -L` output and reports the schema.
+
+**Request Body:**
+```json
+{
+  "controls": [
+    {"name": "brightness", "type": "int", "min": -64, "max": 64, "step": 1, "default": 0},
+    {"name": "exposure_auto", "type": "menu", "options": {"1": "Manual", "3": "Auto"}, "default": 3}
+  ],
+  "currentValues": {
     "brightness": 0,
-    "contrast": 32
+    "exposure_auto": 3
   }
 }
 ```
@@ -190,7 +221,7 @@ curl -H "X-API-Key: your-secret-key" http://localhost:3080/settings/front-door
 PUT /settings/:cameraId
 ```
 
-Update camera settings. Settings are applied by the capture client via v4l2-ctl.
+Update camera v4l2 control values or config settings (rotation, crop, ocr). Settings are applied by the capture client via v4l2-ctl.
 
 **Example:**
 ```bash
diff --git a/demo/capture-upload.sh b/demo/capture-upload.sh
index ac30d69..f099fd7 100755
--- a/demo/capture-upload.sh
+++ b/demo/capture-upload.sh
@@ -168,15 +168,136 @@ if [[ "$CAPTURE_METHOD" == "fswebcam" ]]; then
     fi
 fi
 
+# Discover available v4l2 controls and report them to server
+discover_and_report_controls() {
+    if ! command -v v4l2-ctl &>/dev/null; then
+        log "v4l2-ctl not installed, skipping control discovery"
+        return
+    fi
+    
+    local AVAILABLE_URL="${API_URL%/upload}/settings/$CAMERA_ID/available"
+    
+    log "Discovering available camera controls..."
+    
+    # Parse v4l2-ctl -L output into JSON
+    # Example lines:
+    #   brightness 0x00980900 (int)    : min=-64 max=64 step=1 default=0 value=0
+    #   exposure_auto 0x009a0901 (menu)   : min=0 max=3 default=3 value=3
+    #                     1: Manual Mode
+    #                     3: Aperture Priority Mode
+    
+    local controls_json="["
+    local current_values_json="{"
+    local first_control=true
+    local first_value=true
+    local current_ctrl=""
+    local ctrl_json=""
+    local menu_options=""
+    local in_menu=false
+    
+    while IFS= read -r line || [[ -n "$line" ]]; do
+        # Check if this is a control line (starts with control name)
+        if [[ "$line" =~ ^[[:space:]]*([a-z_]+)[[:space:]]+0x[0-9a-f]+[[:space:]]+\(([a-z]+)\)[[:space:]]*:[[:space:]]*(.*) ]]; then
+            # Save previous control if exists
+            if [[ -n "$current_ctrl" ]]; then
+                if [[ "$in_menu" == "true" && -n "$menu_options" ]]; then
+                    ctrl_json="${ctrl_json%, }, \"options\": {${menu_options%,}}}"
+                else
+                    ctrl_json="${ctrl_json%,}}"
+                fi
+                if [[ "$first_control" == "true" ]]; then
+                    first_control=false
+                else
+                    controls_json+=","
+                fi
+                controls_json+="$ctrl_json"
+            fi
+            
+            current_ctrl="${BASH_REMATCH[1]}"
+            local ctrl_type="${BASH_REMATCH[2]}"
+            local params="${BASH_REMATCH[3]}"
+            
+            ctrl_json="{\"name\": \"$current_ctrl\", \"type\": \"$ctrl_type\","
+            menu_options=""
+            in_menu=false
+            
+            # Parse parameters
+            if [[ "$params" =~ min=(-?[0-9]+) ]]; then
+                ctrl_json+=" \"min\": ${BASH_REMATCH[1]},"
+            fi
+            if [[ "$params" =~ max=(-?[0-9]+) ]]; then
+                ctrl_json+=" \"max\": ${BASH_REMATCH[1]},"
+            fi
+            if [[ "$params" =~ step=([0-9]+) ]]; then
+                ctrl_json+=" \"step\": ${BASH_REMATCH[1]},"
+            fi
+            if [[ "$params" =~ default=(-?[0-9]+) ]]; then
+                ctrl_json+=" \"default\": ${BASH_REMATCH[1]},"
+            fi
+            if [[ "$params" =~ value=(-?[0-9]+) ]]; then
+                local current_value="${BASH_REMATCH[1]}"
+                if [[ "$first_value" == "true" ]]; then
+                    first_value=false
+                else
+                    current_values_json+=","
+                fi
+                current_values_json+="\"$current_ctrl\": $current_value"
+            fi
+            
+            if [[ "$ctrl_type" == "menu" ]]; then
+                in_menu=true
+            fi
+        # Check if this is a menu option line (indented with number: description)
+        elif [[ "$in_menu" == "true" && "$line" =~ ^[[:space:]]+([0-9]+):[[:space:]]+(.+)$ ]]; then
+            local opt_val="${BASH_REMATCH[1]}"
+            local opt_name="${BASH_REMATCH[2]}"
+            menu_options+="\"$opt_val\": \"$opt_name\","
+        fi
+    done < <(v4l2-ctl -d "$VIDEO_DEVICE" -L 2>/dev/null)
+    
+    # Save last control
+    if [[ -n "$current_ctrl" ]]; then
+        if [[ "$in_menu" == "true" && -n "$menu_options" ]]; then
+            ctrl_json="${ctrl_json%, }, \"options\": {${menu_options%,}}}"
+        else
+            ctrl_json="${ctrl_json%,}}"
+        fi
+        if [[ "$first_control" != "true" ]]; then
+            controls_json+=","
+        fi
+        controls_json+="$ctrl_json"
+    fi
+    
+    controls_json+="]"
+    current_values_json+="}"
+    
+    # POST to server
+    local payload="{\"controls\": $controls_json, \"currentValues\": $current_values_json}"
+    
+    local response
+    response=$(curl -s --max-time 10 \
+        -X POST \
+        -H "X-API-Key: $API_KEY" \
+        -H "Content-Type: application/json" \
+        -d "$payload" \
+        "$AVAILABLE_URL" 2>/dev/null) || true
+    
+    if echo "$response" | grep -q '"success"'; then
+        local count
+        count=$(echo "$response" | grep -o '"controlsRegistered":[0-9]*' | cut -d: -f2)
+        log "Reported $count available controls to server"
+    else
+        log "Failed to report available controls: $response"
+    fi
+}
+
 # Fetch and apply camera settings from server
 apply_camera_settings() {
-    # Check if v4l2-ctl is available
     if ! command -v v4l2-ctl &>/dev/null; then
         log "v4l2-ctl not installed, skipping camera settings"
         return
     fi
     
-    # Derive settings URL from upload URL (replace /upload with /settings)
     local SETTINGS_URL="${API_URL%/upload}/settings/$CAMERA_ID"
     
     log "Fetching camera settings from server..."
@@ -186,105 +307,67 @@ apply_camera_settings() {
         "$SETTINGS_URL" 2>/dev/null) || true
     
     if [[ -z "$SETTINGS_RESPONSE" ]]; then
-        log "Could not fetch settings, using camera defaults"
+        log "Could not fetch settings, discovering and reporting controls..."
+        discover_and_report_controls
         return
     fi
     
-    # Check if server has custom settings (look for updatedAt field)
-    local has_custom_settings=false
+    # Check if server has available controls registered
+    local has_controls=false
     if command -v jq &>/dev/null; then
-        local updated_at
-        updated_at=$(echo "$SETTINGS_RESPONSE" | jq -r '.settings.updatedAt // empty')
-        if [[ -n "$updated_at" && "$updated_at" != "null" ]]; then
-            has_custom_settings=true
+        local ctrl_count
+        ctrl_count=$(echo "$SETTINGS_RESPONSE" | jq -r '.availableControls | length // 0')
+        if [[ "$ctrl_count" -gt 0 ]]; then
+            has_controls=true
         fi
     else
-        if echo "$SETTINGS_RESPONSE" | grep -q '"updatedAt"'; then
-            has_custom_settings=true
+        if echo "$SETTINGS_RESPONSE" | grep -q '"availableControls":\[{'; then
+            has_controls=true
         fi
     fi
     
-    if [[ "$has_custom_settings" == "false" ]]; then
-        # No custom settings on server - upload current camera settings
-        log "No settings on server, uploading current camera settings..."
-        upload_current_settings
+    if [[ "$has_controls" == "false" ]]; then
+        log "No controls registered, discovering and reporting..."
+        discover_and_report_controls
         return
     fi
     
-    # Apply settings from server
+    # Apply all values from server dynamically
     if command -v jq &>/dev/null; then
-        local settings
-        settings=$(echo "$SETTINGS_RESPONSE" | jq -r '.settings // empty')
-        if [[ -n "$settings" ]]; then
-            for ctrl in focus_automatic_continuous focus_absolute exposure_auto exposure_absolute brightness contrast; do
-                local value
-                value=$(echo "$settings" | jq -r ".$ctrl // empty")
-                if [[ -n "$value" && "$value" != "null" ]]; then
-                    v4l2-ctl -d "$VIDEO_DEVICE" --set-ctrl="${ctrl}=${value}" 2>/dev/null || true
+        local values
+        values=$(echo "$SETTINGS_RESPONSE" | jq -r '.values // {}')
+        local keys
+        keys=$(echo "$values" | jq -r 'keys[]' 2>/dev/null) || true
+        
+        local applied=0
+        for ctrl in $keys; do
+            local value
+            value=$(echo "$values" | jq -r ".[\"$ctrl\"] // empty")
+            if [[ -n "$value" && "$value" != "null" ]]; then
+                if v4l2-ctl -d "$VIDEO_DEVICE" --set-ctrl="${ctrl}=${value}" 2>/dev/null; then
+                    ((applied++))
                 fi
+            fi
+        done
+        log "Applied $applied camera settings from server"
+    else
+        # Fallback: grep-based parsing for values
+        local values_block
+        values_block=$(echo "$SETTINGS_RESPONSE" | grep -o '"values":{[^}]*}' | sed 's/"values"://')
+        if [[ -n "$values_block" ]]; then
+            # Extract key:value pairs
+            while [[ "$values_block" =~ \"([a-z_]+)\":(-?[0-9]+) ]]; do
+                local ctrl="${BASH_REMATCH[1]}"
+                local value="${BASH_REMATCH[2]}"
+                v4l2-ctl -d "$VIDEO_DEVICE" --set-ctrl="${ctrl}=${value}" 2>/dev/null || true
+                values_block="${values_block#*${BASH_REMATCH[0]}}"
             done
             log "Applied camera settings from server"
         fi
-    else
-        for ctrl in focus_automatic_continuous focus_absolute exposure_auto exposure_absolute brightness contrast; do
-            local value
-            value=$(echo "$SETTINGS_RESPONSE" | grep -o "\"${ctrl}\":[0-9-]*" | cut -d: -f2)
-            if [[ -n "$value" ]]; then
-                v4l2-ctl -d "$VIDEO_DEVICE" --set-ctrl="${ctrl}=${value}" 2>/dev/null || true
-            fi
-        done
-        log "Applied camera settings from server"
     fi
 }
 
-# Read current camera settings and upload to server
-upload_current_settings() {
-    local SETTINGS_URL="${API_URL%/upload}/settings/$CAMERA_ID"
-    
-    # Read current values from camera
-    local focus_auto focus_abs exp_auto exp_abs brightness contrast
-    focus_auto=$(v4l2-ctl -d "$VIDEO_DEVICE" --get-ctrl=focus_automatic_continuous 2>/dev/null | cut -d: -f2 | tr -d ' ') || focus_auto=""
-    focus_abs=$(v4l2-ctl -d "$VIDEO_DEVICE" --get-ctrl=focus_absolute 2>/dev/null | cut -d: -f2 | tr -d ' ') || focus_abs=""
-    exp_auto=$(v4l2-ctl -d "$VIDEO_DEVICE" --get-ctrl=exposure_auto 2>/dev/null | cut -d: -f2 | tr -d ' ') || exp_auto=""
-    exp_abs=$(v4l2-ctl -d "$VIDEO_DEVICE" --get-ctrl=exposure_absolute 2>/dev/null | cut -d: -f2 | tr -d ' ') || exp_abs=""
-    brightness=$(v4l2-ctl -d "$VIDEO_DEVICE" --get-ctrl=brightness 2>/dev/null | cut -d: -f2 | tr -d ' ') || brightness=""
-    contrast=$(v4l2-ctl -d "$VIDEO_DEVICE" --get-ctrl=contrast 2>/dev/null | cut -d: -f2 | tr -d ' ') || contrast=""
-    
-    # Build JSON payload
-    local json_parts=()
-    [[ -n "$focus_auto" ]] && json_parts+=("\"focus_automatic_continuous\": $focus_auto")
-    [[ -n "$focus_abs" ]] && json_parts+=("\"focus_absolute\": $focus_abs")
-    [[ -n "$exp_auto" ]] && json_parts+=("\"exposure_auto\": $exp_auto")
-    [[ -n "$exp_abs" ]] && json_parts+=("\"exposure_absolute\": $exp_abs")
-    [[ -n "$brightness" ]] && json_parts+=("\"brightness\": $brightness")
-    [[ -n "$contrast" ]] && json_parts+=("\"contrast\": $contrast")
-    
-    if [[ ${#json_parts[@]} -eq 0 ]]; then
-        log "Could not read camera settings"
-        return
-    fi
-    
-    # Join with commas
-    local IFS=','
-    local json_body="{${json_parts[*]}}"
-    
-    # Upload to server
-    local response
-    response=$(curl -s --max-time 10 \
-        -X PUT \
-        -H "X-API-Key: $API_KEY" \
-        -H "Content-Type: application/json" \
-        -d "$json_body" \
-        "$SETTINGS_URL" 2>/dev/null) || true
-    
-    if echo "$response" | grep -q '"success"'; then
-        log "Uploaded current camera settings to server"
-    else
-        log "Failed to upload camera settings"
-    fi
-}
-
-# Only handle settings upload/apply for fswebcam/v4l2 for now
+# Only handle settings for fswebcam/v4l2
 if [[ "$CAPTURE_METHOD" == "fswebcam" ]]; then
     apply_camera_settings
 fi
diff --git a/filter_stats.js b/filter_stats.js
new file mode 100644
index 0000000..9598ea1
--- /dev/null
+++ b/filter_stats.js
@@ -0,0 +1,35 @@
+import fs from 'fs';
+import path from 'path';
+
+const statsFile = 'uploads/rpi-webcam-2/2025/12/20/stats.json';
+
+if (fs.existsSync(statsFile)) {
+    try {
+        const raw = fs.readFileSync(statsFile, 'utf8');
+        const stats = JSON.parse(raw);
+        console.log(`Original count: ${stats.length}`);
+
+        const filtered = stats.filter(s => {
+            // Keep if ocr_val is missing (null/undefined) or >= 99
+            // User said: "filter values below 99".
+            // If ocr_val is null, it's not "below 99" technically, it's "no value".
+            // But if we are charting, we usually want to keep valid data.
+            // If ocr_val is strictly a number < 99, remove it.
+            if (typeof s.ocr_val === 'number') {
+                return s.ocr_val >= 99;
+            }
+            // Keep entries without ocr_val or null
+            return true;
+        });
+
+        console.log(`Filtered count: ${filtered.length}`);
+
+        fs.writeFileSync(statsFile, JSON.stringify(filtered, null, 2));
+        console.log('Stats file filtered and saved.');
+
+    } catch (e) {
+        console.error('Error processing stats:', e);
+    }
+} else {
+    console.error('File not found:', statsFile);
+}
diff --git a/package-lock.json b/package-lock.json
index 4a724dd..adca3fa 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,9 +9,13 @@
       "version": "1.0.0",
       "license": "MIT",
       "dependencies": {
+        "better-sqlite3": "^12.5.0",
         "express": "^4.21.0",
         "multer": "^1.4.5-lts.1",
+        "ocrad.js": "^0.0.1",
+        "openai": "^6.15.0",
         "sharp": "^0.34.5",
+        "tesseract.js": "^7.0.0",
         "uuid": "^10.0.0"
       }
     },
@@ -515,6 +519,80 @@
       "integrity": "sha512-PCVAQswWemu6UdxsDFFX/+gVeYqKAod3D3UVm91jHwynguOwAvYPhx8nNlM++NqRcK6CxxpUafjmhIdKiHibqg==",
       "license": "MIT"
     },
+    "node_modules/base64-js": {
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.5.1.tgz",
+      "integrity": "sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ],
+      "license": "MIT"
+    },
+    "node_modules/better-sqlite3": {
+      "version": "12.5.0",
+      "resolved": "https://registry.npmjs.org/better-sqlite3/-/better-sqlite3-12.5.0.tgz",
+      "integrity": "sha512-WwCZ/5Diz7rsF29o27o0Gcc1Du+l7Zsv7SYtVPG0X3G/uUI1LqdxrQI7c9Hs2FWpqXXERjW9hp6g3/tH7DlVKg==",
+      "hasInstallScript": true,
+      "license": "MIT",
+      "dependencies": {
+        "bindings": "^1.5.0",
+        "prebuild-install": "^7.1.1"
+      },
+      "engines": {
+        "node": "20.x || 22.x || 23.x || 24.x || 25.x"
+      }
+    },
+    "node_modules/bindings": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/bindings/-/bindings-1.5.0.tgz",
+      "integrity": "sha512-p2q/t/mhvuOj/UeLlV6566GD/guowlr0hHxClI0W9m7MWYkL1F0hLo+0Aexs9HSPCtR1SXQ0TD3MMKrXZajbiQ==",
+      "license": "MIT",
+      "dependencies": {
+        "file-uri-to-path": "1.0.0"
+      }
+    },
+    "node_modules/bl": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/bl/-/bl-4.1.0.tgz",
+      "integrity": "sha512-1W07cM9gS6DcLperZfFSj+bWLtaPGSOHWhPiGzXmvVJbRLdG82sH/Kn8EtW1VqWVA54AKf2h5k5BbnIbwF3h6w==",
+      "license": "MIT",
+      "dependencies": {
+        "buffer": "^5.5.0",
+        "inherits": "^2.0.4",
+        "readable-stream": "^3.4.0"
+      }
+    },
+    "node_modules/bl/node_modules/readable-stream": {
+      "version": "3.6.2",
+      "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.2.tgz",
+      "integrity": "sha512-9u/sniCrY3D5WdsERHzHE4G2YCXqoG5FTHUiCC4SIbr6XcLZBY05ya9EKjYek9O5xOAwjGq+1JdGBAS7Q9ScoA==",
+      "license": "MIT",
+      "dependencies": {
+        "inherits": "^2.0.3",
+        "string_decoder": "^1.1.1",
+        "util-deprecate": "^1.0.1"
+      },
+      "engines": {
+        "node": ">= 6"
+      }
+    },
+    "node_modules/bmp-js": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/bmp-js/-/bmp-js-0.1.0.tgz",
+      "integrity": "sha512-vHdS19CnY3hwiNdkaqk93DvjVLfbEcI8mys4UjuWrlX1haDmroo8o4xCzh4wD6DGV6HxRCyauwhHRqMTfERtjw==",
+      "license": "MIT"
+    },
     "node_modules/body-parser": {
       "version": "1.20.4",
       "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.20.4.tgz",
@@ -539,6 +617,30 @@
         "npm": "1.2.8000 || >= 1.4.16"
       }
     },
+    "node_modules/buffer": {
+      "version": "5.7.1",
+      "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.7.1.tgz",
+      "integrity": "sha512-EHcyIPBQ4BSGlvjB16k5KgAJ27CIsHY/2JBmCRReo48y9rQ3MaUzWX3KVlBa4U7MyX02HdVj0K7C3WaB3ju7FQ==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ],
+      "license": "MIT",
+      "dependencies": {
+        "base64-js": "^1.3.1",
+        "ieee754": "^1.1.13"
+      }
+    },
     "node_modules/buffer-from": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.2.tgz",
@@ -594,6 +696,12 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/chownr": {
+      "version": "1.1.4",
+      "resolved": "https://registry.npmjs.org/chownr/-/chownr-1.1.4.tgz",
+      "integrity": "sha512-jJ0bqzaylmJtVnNgzTeSOs8DPavpbYgEr/b0YL8/2GO3xJEhInFmhKMUnEJQjZumK7KXGFhUy89PrsJWlakBVg==",
+      "license": "ISC"
+    },
     "node_modules/concat-stream": {
       "version": "1.6.2",
       "resolved": "https://registry.npmjs.org/concat-stream/-/concat-stream-1.6.2.tgz",
@@ -660,6 +768,30 @@
         "ms": "2.0.0"
       }
     },
+    "node_modules/decompress-response": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/decompress-response/-/decompress-response-6.0.0.tgz",
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+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/tar-stream/-/tar-stream-2.2.0.tgz",
+      "integrity": "sha512-ujeqbceABgwMZxEJnk2HDY2DlnUZ+9oEcb1KzTVfYHio0UE6dG71n60d8D2I4qNvleWrrXpmjpt7vZeF1LnMZQ==",
+      "license": "MIT",
+      "dependencies": {
+        "bl": "^4.0.3",
+        "end-of-stream": "^1.4.1",
+        "fs-constants": "^1.0.0",
+        "inherits": "^2.0.3",
+        "readable-stream": "^3.1.1"
+      },
+      "engines": {
+        "node": ">=6"
+      }
+    },
+    "node_modules/tar-stream/node_modules/readable-stream": {
+      "version": "3.6.2",
+      "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.2.tgz",
+      "integrity": "sha512-9u/sniCrY3D5WdsERHzHE4G2YCXqoG5FTHUiCC4SIbr6XcLZBY05ya9EKjYek9O5xOAwjGq+1JdGBAS7Q9ScoA==",
+      "license": "MIT",
+      "dependencies": {
+        "inherits": "^2.0.3",
+        "string_decoder": "^1.1.1",
+        "util-deprecate": "^1.0.1"
+      },
+      "engines": {
+        "node": ">= 6"
+      }
+    },
+    "node_modules/tesseract.js": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/tesseract.js/-/tesseract.js-7.0.0.tgz",
+      "integrity": "sha512-exPBkd+z+wM1BuMkx/Bjv43OeLBxhL5kKWsz/9JY+DXcXdiBjiAch0V49QR3oAJqCaL5qURE0vx9Eo+G5YE7mA==",
+      "hasInstallScript": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "bmp-js": "^0.1.0",
+        "idb-keyval": "^6.2.0",
+        "is-url": "^1.2.4",
+        "node-fetch": "^2.6.9",
+        "opencollective-postinstall": "^2.0.3",
+        "regenerator-runtime": "^0.13.3",
+        "tesseract.js-core": "^7.0.0",
+        "wasm-feature-detect": "^1.8.0",
+        "zlibjs": "^0.3.1"
+      }
+    },
+    "node_modules/tesseract.js-core": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/tesseract.js-core/-/tesseract.js-core-7.0.0.tgz",
+      "integrity": "sha512-WnNH518NzmbSq9zgTPeoF8c+xmilS8rFIl1YKbk/ptuuc7p6cLNELNuPAzcmsYw450ca6bLa8j3t0VAtq435Vw==",
+      "license": "Apache-2.0"
+    },
     "node_modules/toidentifier": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.1.tgz",
@@ -1476,6 +1960,12 @@
         "node": ">=0.6"
       }
     },
+    "node_modules/tr46": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-0.0.3.tgz",
+      "integrity": "sha512-N3WMsuqV66lT30CrXNbEjx4GEwlow3v6rr4mCcv6prnfwhS01rkgyFdjPNBYd9br7LpXV1+Emh01fHnq2Gdgrw==",
+      "license": "MIT"
+    },
     "node_modules/tslib": {
       "version": "2.8.1",
       "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.8.1.tgz",
@@ -1483,6 +1973,18 @@
       "license": "0BSD",
       "optional": true
     },
+    "node_modules/tunnel-agent": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
+      "integrity": "sha512-McnNiV1l8RYeY8tBgEpuodCC1mLUdbSN+CYBL7kJsJNInOP8UjDDEwdk6Mw60vdLLrr5NHKZhMAOSrR2NZuQ+w==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "safe-buffer": "^5.0.1"
+      },
+      "engines": {
+        "node": "*"
+      }
+    },
     "node_modules/type-is": {
       "version": "1.6.18",
       "resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.18.tgz",
@@ -1548,6 +2050,34 @@
         "node": ">= 0.8"
       }
     },
+    "node_modules/wasm-feature-detect": {
+      "version": "1.8.0",
+      "resolved": "https://registry.npmjs.org/wasm-feature-detect/-/wasm-feature-detect-1.8.0.tgz",
+      "integrity": "sha512-zksaLKM2fVlnB5jQQDqKXXwYHLQUVH9es+5TOOHwGOVJOCeRBCiPjwSg+3tN2AdTCzjgli4jijCH290kXb/zWQ==",
+      "license": "Apache-2.0"
+    },
+    "node_modules/webidl-conversions": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz",
+      "integrity": "sha512-2JAn3z8AR6rjK8Sm8orRC0h/bcl/DqL7tRPdGZ4I1CjdF+EaMLmYxBHyXuKL849eucPFhvBoxMsflfOb8kxaeQ==",
+      "license": "BSD-2-Clause"
+    },
+    "node_modules/whatwg-url": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-5.0.0.tgz",
+      "integrity": "sha512-saE57nupxk6v3HY35+jzBwYa0rKSy0XR8JSxZPwgLr7ys0IBzhGviA1/TUGJLmSVqs8pb9AnvICXEuOHLprYTw==",
+      "license": "MIT",
+      "dependencies": {
+        "tr46": "~0.0.3",
+        "webidl-conversions": "^3.0.0"
+      }
+    },
+    "node_modules/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==",
+      "license": "ISC"
+    },
     "node_modules/xtend": {
       "version": "4.0.2",
       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.2.tgz",
@@ -1556,6 +2086,15 @@
       "engines": {
         "node": ">=0.4"
       }
+    },
+    "node_modules/zlibjs": {
+      "version": "0.3.1",
+      "resolved": "https://registry.npmjs.org/zlibjs/-/zlibjs-0.3.1.tgz",
+      "integrity": "sha512-+J9RrgTKOmlxFSDHo0pI1xM6BLVUv+o0ZT9ANtCxGkjIVCCUdx9alUF8Gm+dGLKbkkkidWIHFDZHDMpfITt4+w==",
+      "license": "MIT",
+      "engines": {
+        "node": "*"
+      }
     }
   }
 }
diff --git a/package.json b/package.json
index 51507f9..5598ccb 100644
--- a/package.json
+++ b/package.json
@@ -15,9 +15,13 @@
   ],
   "license": "MIT",
   "dependencies": {
+    "better-sqlite3": "^12.5.0",
     "express": "^4.21.0",
     "multer": "^1.4.5-lts.1",
+    "ocrad.js": "^0.0.1",
+    "openai": "^6.15.0",
     "sharp": "^0.34.5",
+    "tesseract.js": "^7.0.0",
     "uuid": "^10.0.0"
   }
 }
diff --git a/public/index.html b/public/index.html
index 165f021..2a987ca 100644
--- a/public/index.html
+++ b/public/index.html
@@ -177,7 +177,7 @@
         <!-- Brightness Chart -->
         <div id="chartContainer"
             style="margin-top: 40px; background: var(--card-bg); padding: 20px; border-radius: 8px; display: none;">
-            <h3>Brightness Levels</h3>
+            <h3 id="chartTitle">Brightness Levels</h3>
             <canvas id="brightnessChart" style="width: 100%; height: 200px;"></canvas>
         </div>
     </div>
@@ -193,7 +193,8 @@
         const state = {
             cameras: [],
             selectedCamera: localStorage.getItem('lastCamera') || '',
-            selectedDate: localStorage.getItem('lastDate') || ''
+            selectedDate: localStorage.getItem('lastDate') || '',
+            currentSettings: {}
         };
 
         // DOM Elements
@@ -258,6 +259,7 @@
 
                 if (state.selectedCamera) {
                     loadDates(state.selectedCamera);
+                    loadSettings(state.selectedCamera);
                 }
             } catch (err) {
                 console.error(err);
@@ -299,6 +301,17 @@
             }
         }
 
+        async function loadSettings(cameraId) {
+            try {
+                const res = await fetch(`settings/${cameraId}`, { headers: getHeaders() });
+                const data = await res.json();
+                state.currentSettings = data.settings || {};
+            } catch (err) {
+                console.error('Failed to load settings', err);
+                state.currentSettings = {};
+            }
+        }
+
         async function loadImages(isAutoUpdate = false) {
             const cameraId = cameraSelect.value;
             const dateStr = dateSelect.value; // YYYY-MM-DD
@@ -439,16 +452,49 @@
 
             const width = canvas.width;
             const height = canvas.height;
-            const padding = { top: 20, right: 20, bottom: 30, left: 40 };
+            const padding = { top: 20, right: 30, bottom: 30, left: 45 };
 
             ctx.clearRect(0, 0, width, height);
 
             // Sort stats by timestamp just in case
             stats.sort((a, b) => a.timestamp.localeCompare(b.timestamp));
 
+            // Determine data source and range
+            // If any entry has 'ocr_val', prefer that.
+            const hasOcr = stats.some(s => s.ocr_val !== undefined && s.ocr_val !== null);
+            const valueKey = hasOcr ? 'ocr_val' : 'brightness';
+
+            // Clean data (filter nulls)
+            const validPoints = stats
+                .filter(s => s[valueKey] !== undefined && s[valueKey] !== null)
+                .map(s => ({
+                    t: s.timestamp,
+                    v: Number(s[valueKey])
+                }));
+
+            if (validPoints.length === 0) return;
+
+            let minY = Math.min(...validPoints.map(p => p.v));
+            let maxY = Math.max(...validPoints.map(p => p.v));
+
+            // Add some padding to Y range
+            const range = maxY - minY;
+            if (range === 0) {
+                minY -= 10;
+                maxY += 10;
+            } else {
+                minY -= range * 0.1;
+                maxY += range * 0.1;
+            }
+            // For brightness, clamp to 0-255 if not OCR? 
+            if (!hasOcr) {
+                minY = 0;
+                maxY = 255;
+            }
+
             // Helper to parsing time to minutes from start of day (local time)
             const getMinutes = (iso) => {
-                // Parse UCT timestamp to Date object
+                // Parse UTC timestamp to Date object
                 const parts = iso.match(/(\d{4})-(\d{2})-(\d{2})T(\d{2})[-:](\d{2})[-:](\d{2})/);
                 let d;
                 if (parts) {
@@ -460,14 +506,15 @@
                 return d.getHours() * 60 + d.getMinutes();
             };
 
-            const points = stats.map(s => ({
-                x: getMinutes(s.timestamp),
-                y: s.brightness
+            const points = validPoints.map(p => ({
+                x: getMinutes(p.t),
+                y: p.v
             }));
 
             // Scales
             const mapX = (minutes) => padding.left + (minutes / 1440) * (width - padding.left - padding.right);
-            const mapY = (val) => height - padding.bottom - (val / 255) * (height - padding.top - padding.bottom);
+            // Invert Y (0 at bottom)
+            const mapY = (val) => height - padding.bottom - ((val - minY) / (maxY - minY)) * (height - padding.top - padding.bottom);
 
             // Draw Axes
             ctx.strokeStyle = '#555';
@@ -486,7 +533,7 @@
             ctx.stroke();
 
             // Draw Line
-            ctx.strokeStyle = '#3b82f6';
+            ctx.strokeStyle = hasOcr ? '#10b981' : '#3b82f6'; // Green for OCR, Blue for Brightness
             ctx.lineWidth = 2;
             ctx.beginPath();
 
@@ -498,6 +545,14 @@
             }
             ctx.stroke();
 
+            // Draw Dots
+            ctx.fillStyle = hasOcr ? '#10b981' : '#3b82f6';
+            for (const p of points) {
+                ctx.beginPath();
+                ctx.arc(mapX(p.x), mapY(p.y), 3, 0, Math.PI * 2);
+                ctx.fill();
+            }
+
             // Draw Labels (Time)
             ctx.fillStyle = '#ccc';
             ctx.font = '12px sans-serif';
@@ -505,16 +560,35 @@
 
             for (let h = 0; h <= 24; h += 4) {
                 const x = mapX(h * 60);
-                ctx.fillText(`${h}:00`, x, height - 10);
+                if (x > padding.left) {
+                    ctx.fillText(`${h}:00`, x, height - 10);
+                }
             }
 
-            // Draw Labels (Brightness)
+            // Draw Labels (Value)
             ctx.textAlign = 'right';
             ctx.textBaseline = 'middle';
-            for (let b = 0; b <= 255; b += 64) {
-                const y = mapY(b);
-                ctx.fillText(Math.round(b), padding.left - 5, y);
+            // Draw 5 ticks
+            for (let i = 0; i <= 4; i++) {
+                const val = minY + (i / 4) * (maxY - minY);
+                const y = mapY(val);
+                ctx.fillText(Math.round(val), padding.left - 5, y);
             }
+
+            // Title
+            ctx.save();
+            ctx.translate(15, height / 2);
+            ctx.rotate(-Math.PI / 2);
+            ctx.textAlign = 'center';
+            ctx.textAlign = 'center';
+            const label = state.currentSettings.chartLabel || (hasOcr ? "Value" : "Brightness");
+            ctx.fillText(label, 0, 0);
+
+            // Update Header too
+            const titleEl = document.getElementById('chartTitle');
+            if (titleEl) titleEl.textContent = label;
+
+            ctx.restore();
         }
 
         function getPrettyTime(ts) {
@@ -541,8 +615,10 @@
         // Listeners
         cameraSelect.addEventListener('change', (e) => {
             state.selectedCamera = e.target.value;
-            if (state.selectedCamera) loadDates(state.selectedCamera);
-            else dateSelect.disabled = true;
+            if (state.selectedCamera) {
+                loadDates(state.selectedCamera);
+                loadSettings(state.selectedCamera);
+            } else dateSelect.disabled = true;
         });
 
         dateSelect.addEventListener('change', (e) => {
diff --git a/server.js b/server.js
index 7bc16d5..8ac7e00 100644
--- a/server.js
+++ b/server.js
@@ -4,6 +4,8 @@ import path from 'path';
 import fs from 'fs';
 import { fileURLToPath } from 'url';
 import sharp from 'sharp';
+import OpenAI from 'openai';
+import Database from 'better-sqlite3';
 import { validateApiKey, loadUsers } from './users.js';
 
 const __filename = fileURLToPath(import.meta.url);
@@ -51,30 +53,23 @@ function authenticate(req, res, next) {
 }
 
 // Configure multer storage
+const TEMP_UPLOAD_DIR = path.join(UPLOAD_DIR, 'temp');
+
+// Ensure temp directory exists
+if (!fs.existsSync(TEMP_UPLOAD_DIR)) {
+    fs.mkdirSync(TEMP_UPLOAD_DIR, { recursive: true });
+}
+
+// Configure multer storage - save to temp dir first
 const storage = multer.diskStorage({
     destination: (req, file, cb) => {
-        const cameraId = req.body.cameraId || req.query.cameraId || 'default';
-        const now = new Date();
-
-        // Create directory structure: uploads/{cameraId}/{YYYY}/{MM}/{DD}/
-        const year = now.getFullYear().toString();
-        const month = String(now.getMonth() + 1).padStart(2, '0');
-        const day = String(now.getDate()).padStart(2, '0');
-
-        const destPath = path.join(UPLOAD_DIR, cameraId, year, month, day);
-
-        fs.mkdirSync(destPath, { recursive: true });
-        cb(null, destPath);
+        cb(null, TEMP_UPLOAD_DIR);
     },
     filename: (req, file, cb) => {
-        const cameraId = req.body.cameraId || req.query.cameraId || 'default';
-        const now = new Date();
-
-        // Filename format: {cameraId}_{timestamp}.{ext}
-        const timestamp = now.toISOString().replace(/[:.]/g, '-');
+        // Temporary filename: {timestamp}_{random}.{ext}
+        const uniqueSuffix = Date.now() + '-' + Math.round(Math.random() * 1E9);
         const ext = path.extname(file.originalname) || '.jpg';
-
-        cb(null, `${cameraId}_${timestamp}${ext}`);
+        cb(null, `${uniqueSuffix}${ext}`);
     }
 });
 
@@ -114,6 +109,66 @@ app.post('/upload', authenticate, upload.single('image'), async (req, res) => {
 
     const cameraId = req.body.cameraId || req.query.cameraId || 'default';
 
+    // Move file from temp to final destination
+    const now = new Date();
+    const year = now.getFullYear().toString();
+    const month = String(now.getMonth() + 1).padStart(2, '0');
+    const day = String(now.getDate()).padStart(2, '0');
+
+    const finalDir = path.join(UPLOAD_DIR, cameraId, year, month, day);
+    if (!fs.existsSync(finalDir)) {
+        fs.mkdirSync(finalDir, { recursive: true });
+    }
+
+    const timestamp = now.toISOString().replace(/[:.]/g, '-');
+    const ext = path.extname(req.file.originalname) || '.jpg';
+    const finalFilename = `${cameraId}_${timestamp}${ext}`;
+    const finalPath = path.join(finalDir, finalFilename);
+
+    try {
+        fs.renameSync(req.file.path, finalPath);
+
+        // Update req.file details for subsequent use
+        req.file.path = finalPath;
+        req.file.filename = finalFilename;
+        req.file.destination = finalDir;
+    } catch (moveError) {
+        console.error('Failed to move file to final destination:', moveError);
+        // Clean up temp file if move failed
+        try { fs.unlinkSync(req.file.path); } catch (e) { }
+        return res.status(500).json({ error: 'Failed to process upload storage' });
+    }
+
+    // Apply rotation and cropping if configured
+    try {
+        const user = req.authenticatedUser;
+        const storageKey = `${user}:${cameraId}`;
+        const allSettings = loadCameraSettings();
+        const settings = allSettings[storageKey] || {};
+
+        // Check if we need to modify the image
+        if (settings.rotation || settings.crop) {
+            console.log(`Applying transformations for ${cameraId}:`, { rotation: settings.rotation, crop: settings.crop });
+            let pipeline = sharp(req.file.path);
+
+            if (settings.rotation) {
+                pipeline = pipeline.rotate(settings.rotation);
+            }
+
+            if (settings.crop) {
+                // crop format: { left, top, width, height }
+                pipeline = pipeline.extract(settings.crop);
+            }
+
+            // Overwrite the original file with transformed version
+            const buffer = await pipeline.toBuffer();
+            fs.writeFileSync(req.file.path, buffer);
+            console.log(`Transformed image saved to ${req.file.path}`);
+        }
+    } catch (transformError) {
+        console.error('Failed to transform image:', transformError);
+    }
+
     // Generate thumbnail
     try {
         const image = sharp(req.file.path);
@@ -124,6 +179,159 @@ app.post('/upload', authenticate, upload.single('image'), async (req, res) => {
         // Simple average of R, G, B mean values (0-255)
         const brightness = Math.round((stats.channels[0].mean + stats.channels[1].mean + stats.channels[2].mean) / 3);
 
+        // Reload settings for OCR check
+        let ocr_val = null;
+        try {
+            const user = req.authenticatedUser;
+            const storageKey = `${user}:${cameraId}`;
+            const settings = loadCameraSettings()[storageKey] || {};
+
+            const ocrSettings = (typeof settings.ocr === 'object') ? settings.ocr : { enabled: !!settings.ocr };
+
+            if (ocrSettings.enabled) {
+                console.log(`Running OCR for ${cameraId} using OpenAI...`);
+
+                try {
+                    // Read API Key
+                    const keyPath = path.join(__dirname, 'openai.key');
+                    if (fs.existsSync(keyPath)) {
+                        const apiKey = fs.readFileSync(keyPath, 'utf8').trim();
+                        // console.log(`Debug: Key loaded`); 
+                        const openai = new OpenAI({ apiKey });
+
+                        // Gather historical context for OCR
+                        let last5Values = [];
+                        let fiveDayMin = null;
+                        let fiveDayMax = null;
+
+                        try {
+                            const cameraPath = path.join(UPLOAD_DIR, cameraId);
+                            const now = new Date();
+                            const allOcrVals = [];
+
+                            // Check last 5 days
+                            for (let daysAgo = 0; daysAgo < 5; daysAgo++) {
+                                const d = new Date(now);
+                                d.setDate(d.getDate() - daysAgo);
+                                const y = d.getFullYear().toString();
+                                const m = String(d.getMonth() + 1).padStart(2, '0');
+                                const dd = String(d.getDate()).padStart(2, '0');
+                                const statsPath = path.join(cameraPath, y, m, dd, 'stats.json');
+
+                                if (fs.existsSync(statsPath)) {
+                                    const dayStats = JSON.parse(fs.readFileSync(statsPath, 'utf8'));
+                                    const validVals = dayStats
+                                        .filter(e => e.ocr_val != null && typeof e.ocr_val === 'number')
+                                        .map(e => e.ocr_val);
+                                    allOcrVals.push(...validVals);
+
+                                    // Get last 5 from today only
+                                    if (daysAgo === 0 && validVals.length > 0) {
+                                        last5Values = validVals.slice(-5);
+                                    }
+                                }
+                            }
+
+                            if (allOcrVals.length > 0) {
+                                fiveDayMin = Math.min(...allOcrVals);
+                                fiveDayMax = Math.max(...allOcrVals);
+                            }
+                        } catch (histErr) {
+                            console.error('Error gathering OCR history:', histErr);
+                        }
+
+                        // Build context string
+                        let contextStr = '';
+                        if (last5Values.length > 0) {
+                            contextStr += `Last ${last5Values.length} readings: ${last5Values.join(', ')}. `;
+                        }
+                        if (fiveDayMin !== null && fiveDayMax !== null) {
+                            contextStr += `Expected range (last 5 days): ${fiveDayMin} to ${fiveDayMax}.`;
+                        }
+
+                        const promptText = contextStr
+                            ? `Identify the numeric meter reading. ${contextStr}`
+                            : `Identify the numeric meter reading.`;
+
+                        // Prepare Image (Base64)
+                        const imageBuffer = await sharp(req.file.path)
+                            .resize({ width: 200, withoutEnlargement: true })
+                            .toFormat('png')
+                            .toBuffer();
+
+                        const base64Image = imageBuffer.toString('base64');
+                        const dataUrl = `data:image/jpeg;base64,${base64Image}`;
+
+                        const response = await openai.chat.completions.create({
+                            reasoning_effort: "minimal",
+                            model: "gpt-5-mini",
+                            messages: [
+                                {
+                                    "role": "user", "content": [
+                                        { "type": "text", "text": promptText },
+                                        { "type": "image_url", "image_url": { "url": dataUrl } }
+                                    ]
+                                }
+                            ],
+                            response_format: {
+                                "type": "json_schema", "json_schema": {
+                                    "name": "number_extraction", "strict": true,
+                                    "schema": {
+                                        "type": "object",
+                                        "properties": { "number": { "type": "number" } },
+                                        "required": ["number"], "additionalProperties": false
+                                    }
+                                }
+                            }
+                        });
+
+                        const content = response.choices[0].message.content;
+                        if (content) {
+                            const result = JSON.parse(content);
+                            let val = result.number;
+
+                            if (ocrSettings.minval !== undefined && val < ocrSettings.minval) {
+                                console.log(`OCR value ${val} skipped (below minval ${ocrSettings.minval})`);
+                                val = null;
+                            }
+                            if (ocrSettings.maxval !== undefined && val > ocrSettings.maxval) {
+                                console.log(`OCR value ${val} skipped (above maxval ${ocrSettings.maxval})`);
+                                val = null;
+                            }
+
+                            if (val !== null) {
+                                ocr_val = val;
+                                console.log(`OpenAI OCR Result: ${ocr_val}`);
+
+                                // Insert CO2 reading into ac_data.db
+                                try {
+                                    const co2DbPath = '/home/seb/src/actest/ac_data.db';
+                                    if (fs.existsSync(co2DbPath)) {
+                                        const co2Db = new Database(co2DbPath);
+                                        const stmt = co2Db.prepare(`
+                                            INSERT INTO readings (dev_name, port, port_name, fan_speed)
+                                            VALUES ('Wall', 2, 'CO2', ?)
+                                        `);
+                                        stmt.run(ocr_val);
+                                        co2Db.close();
+                                        console.log(`CO2 reading ${ocr_val} ppm inserted into ac_data.db`);
+                                    }
+                                } catch (dbErr) {
+                                    console.error('Failed to insert CO2 into ac_data.db:', dbErr);
+                                }
+                            }
+                        }
+                    } else {
+                        console.error('openai.key file not found.');
+                    }
+                } catch (openaiError) {
+                    console.error('OpenAI OCR Failed:', openaiError);
+                }
+            }
+        } catch (ocrErr) {
+            console.error('OCR logic error:', ocrErr);
+        }
+
         const thumbnailFilename = req.file.filename.replace(path.extname(req.file.filename), '_thumb.avif');
         const thumbnailPath = path.join(path.dirname(req.file.path), thumbnailFilename);
         const dirPath = path.dirname(req.file.path);
@@ -145,7 +353,8 @@ app.post('/upload', authenticate, upload.single('image'), async (req, res) => {
         dailyStats.push({
             timestamp: new Date().toISOString(),
             filename: req.file.filename,
-            brightness
+            brightness,
+            ocr_val
         });
 
         // Write back stats
@@ -153,6 +362,29 @@ app.post('/upload', authenticate, upload.single('image'), async (req, res) => {
             fs.writeFileSync(statsFile, JSON.stringify(dailyStats, null, 2));
         } catch (e) { console.error('Error writing stats.json', e); }
 
+        // Insert brightness to ac_data.db if enabled
+        try {
+            const user = req.authenticatedUser;
+            const storageKey = `${user}:${cameraId}`;
+            const settings = loadCameraSettings()[storageKey] || {};
+
+            if (settings.insertBrightnessToDb) {
+                const dbPath = '/home/seb/src/actest/ac_data.db';
+                if (fs.existsSync(dbPath)) {
+                    const db = new Database(dbPath);
+                    const stmt = db.prepare(`
+                        INSERT INTO readings (dev_name, port, port_name, fan_speed)
+                        VALUES ('Wall', 3, 'Light', ?)
+                    `);
+                    stmt.run(brightness);
+                    db.close();
+                    console.log(`Brightness ${brightness} inserted into ac_data.db as Light`);
+                }
+            }
+        } catch (dbErr) {
+            console.error('Failed to insert brightness into ac_data.db:', dbErr);
+        }
+
         res.json({
             success: true,
             cameraId,
@@ -162,6 +394,7 @@ app.post('/upload', authenticate, upload.single('image'), async (req, res) => {
             thumbnailPath: thumbnailPath,
             size: req.file.size,
             brightness,
+            ocr_val,
             timestamp: new Date().toISOString()
         });
     } catch (error) {
@@ -268,7 +501,6 @@ function saveCameraSettings(settings) {
     fs.writeFileSync(SETTINGS_FILE, JSON.stringify(settings, null, 2));
 }
 
-// Get camera settings
 // Get camera settings
 app.get('/settings/:cameraId', authenticate, (req, res) => {
     const { cameraId } = req.params;
@@ -276,23 +508,65 @@ app.get('/settings/:cameraId', authenticate, (req, res) => {
     const storageKey = `${user}:${cameraId}`;
 
     const allSettings = loadCameraSettings();
-    const settings = allSettings[storageKey] || {};
+    const cameraConfig = allSettings[storageKey] || {};
 
+    // Return the dynamic schema with available controls and current values
     res.json({
         cameraId,
-        settings: {
-            focus_automatic_continuous: settings.focus_automatic_continuous ?? 0,
-            focus_absolute: settings.focus_absolute ?? 30,
-            exposure_auto: settings.exposure_auto ?? 1,
-            exposure_absolute: settings.exposure_absolute ?? 200,
-            brightness: settings.brightness ?? 0,
-            contrast: settings.contrast ?? 32,
-            ...settings
+        availableControls: cameraConfig.availableControls || [],
+        values: cameraConfig.values || {},
+        updatedAt: cameraConfig.updatedAt || null,
+        updatedBy: cameraConfig.updatedBy || null,
+        // Include any extra config like rotation, crop, ocr, etc.
+        config: {
+            rotation: cameraConfig.rotation,
+            crop: cameraConfig.crop,
+            ocr: cameraConfig.ocr,
+            chartLabel: cameraConfig.chartLabel,
+            insertBrightnessToDb: cameraConfig.insertBrightnessToDb
         }
     });
 });
 
-// Update camera settings
+// Register available camera controls (called by camclient on startup)
+app.post('/settings/:cameraId/available', authenticate, express.json(), (req, res) => {
+    const { cameraId } = req.params;
+    const user = req.authenticatedUser;
+    const storageKey = `${user}:${cameraId}`;
+    const { controls, currentValues } = req.body;
+
+    if (!controls || !Array.isArray(controls)) {
+        return res.status(400).json({ error: 'controls array required in request body' });
+    }
+
+    const allSettings = loadCameraSettings();
+    const existing = allSettings[storageKey] || {};
+
+    // Preserve existing configured values, but update available controls
+    allSettings[storageKey] = {
+        ...existing,
+        availableControls: controls,
+        // Merge current camera values as defaults if no values configured yet
+        values: existing.values || currentValues || {},
+        updatedAt: new Date().toISOString(),
+        updatedBy: user
+    };
+
+    try {
+        saveCameraSettings(allSettings);
+        console.log(`Registered ${controls.length} available controls for ${storageKey}`);
+        res.json({
+            success: true,
+            cameraId,
+            controlsRegistered: controls.length,
+            values: allSettings[storageKey].values
+        });
+    } catch (error) {
+        res.status(500).json({ error: 'Failed to save available controls', details: error.message });
+    }
+});
+
+// Update camera settings (values)
 app.put('/settings/:cameraId', authenticate, express.json(), (req, res) => {
     const { cameraId } = req.params;
     const user = req.authenticatedUser;
@@ -304,9 +578,28 @@ app.put('/settings/:cameraId', authenticate, express.json(), (req, res) => {
     }
 
     const allSettings = loadCameraSettings();
+    const existing = allSettings[storageKey] || {};
+
+    // Separate v4l2 control values from config settings
+    const configKeys = ['rotation', 'crop', 'ocr', 'chartLabel', 'insertBrightnessToDb'];
+    const newValues = {};
+    const newConfig = {};
+
+    for (const [key, value] of Object.entries(newSettings)) {
+        if (configKeys.includes(key)) {
+            newConfig[key] = value;
+        } else {
+            newValues[key] = value;
+        }
+    }
+
     allSettings[storageKey] = {
-        ...(allSettings[storageKey] || {}),
-        ...newSettings,
+        ...existing,
+        ...newConfig,
+        values: {
+            ...(existing.values || {}),
+            ...newValues
+        },
         updatedAt: new Date().toISOString(),
         updatedBy: user
     };
@@ -316,15 +609,20 @@ app.put('/settings/:cameraId', authenticate, express.json(), (req, res) => {
         res.json({
             success: true,
             cameraId,
-            settings: allSettings[storageKey]
+            values: allSettings[storageKey].values,
+            config: {
+                rotation: allSettings[storageKey].rotation,
+                crop: allSettings[storageKey].crop,
+                ocr: allSettings[storageKey].ocr,
+                chartLabel: allSettings[storageKey].chartLabel,
+                insertBrightnessToDb: allSettings[storageKey].insertBrightnessToDb
+            }
         });
     } catch (error) {
         res.status(500).json({ error: 'Failed to save settings', details: error.message });
     }
 });
 
-
-
 // === Web Interface Endpoints ===
 
 // Serve static files (frontend)