Connected-device integration
Remote claw-machine control
The machine-control path moves browser commands over MQTT to an ESP32, while the existing Firebase services continue to handle accounts, balances, payments and session records.
Engineering scope
- Browser-to-ESP32 commands through MQTT, WebSocket and EMQX
- Direction, grab and stop handling
- Stale, duplicate and interrupted-session handling
System flow
The machine-control path
- Use the browser controlsPress, hold or release a direction or grab control.
- Send the commandMQTT over WebSocket carries the message through EMQX.
- Handle it on ESP32Interpret the command and its session state.
- Drive or stop the machineApply the movement, grab or stop command.
Control-channel integration
MQTT and WebSocket carry machine commands while Firebase retains accounts, balances, payments and session records. This separates real-time control from the surrounding game services.
Command and session handling
The firmware distinguishes a quick press, a held button and a release. It includes release-to-stop logic, stale and duplicate command checks, and watchdog handling for interrupted sessions.
Physical-machine testing
Documented checks cover press, hold, release and interrupted sessions on the machine. Camera integration remains in progress; no measured latency result is available.
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