Using a Smart Pixel Clock for Claude AI Completion Notifications

Hardware and Setup

A Reddit user on r/ClaudeAI posted a method to create a physical notification display for when Claude AI completes tasks. The setup uses a ULANZI TC001 Smart Pixel Clock, available on Amazon for approximately £50. The device is flashed with custom firmware from Awtrix3 (https://blueforcer.github.io/awtrix3/#/), which exposes an HTTP endpoint for posting messages.

Notification Configuration

The core of the implementation is a Stop hook that sends a curl command to the device's API. The example configuration from the source is:

{ "type": "command", "command": "curl -X POST http://192.168.1.224/api/notify -H 'Content-Type: application/json' -d '{ \"stack\": false, \"blinkText\": 100, \"center\": true, \"color\": \"#00FF00\", \"text\": \"CLAUDE DONE!\"}' 2>/dev/null || true" }

This JSON configuration triggers a POST request to the device's API endpoint (in this example, http://192.168.1.224/api/notify) with specific display parameters: text centered in green (#00FF00) that blinks 100 times, showing "CLAUDE DONE!" without stacking messages.

This approach provides a tangible, visual cue for developers using Claude AI, moving beyond screen-based notifications to a dedicated hardware indicator.