DIY USB PD powered automatic hotplatae
Yellow LED: Preheat
Red LED: Reflow
The whole reflow process will have the following LED signals
Preheat slow blinking (2s): Standby
Preheat fast blinking (0.5s): Starting reflow process in 10 seconds
Preheat on: Preheating
Reflow on: Reflowing
Reflow slow blinking: Reflow completed
Press STOP button to restore to Standby state