Print Button

M5Stack AtomS3 Lite firmware that shows a Bambuddy printer's state and clears the plate on press.

LED	Meaning
Red	Printing
Yellow	Print finished, waiting for the plate to be cleared. Press to clear.
Green	Idle
Blue pulse	Connecting to Wi-Fi, or setup hotspot is up
Cyan pulse	No printer selected
Dim magenta	Printer or Bambuddy unreachable
Magenta blink	Bambuddy rejected the API key
White blink	Identify (10 s)
White flash	Plate clear accepted

Build and flash

cp firmware/secrets.ini.example firmware/secrets.ini   # optional defaults
mise run flash                                          # PORT=/dev/cu.usbserial-xxx mise run flash

secrets.ini values are defaults baked into every button. Settings saved in the web UI take priority.

Setup

1. Flash every button with the same secrets.ini so they all join Wi-Fi.
2. Open any button at http://printbutton-xxxxxx.local. The "Buttons on this network" card lists the others.
3. On each button, press Identify to find it, then pick its printer and save.

Without Wi-Fi credentials, or if the network can't be joined within 20 s, the button starts a printbutton-xxxxxx hotspot with a captive portal.

The API key needs the Control printer permission in Bambuddy.

UI development

DEVICE_URL=http://<button-ip> mise run ui:dev