myStrom's WiFi Button Plus ESPHome configuration yaml

Disclaimer

Work In progress !!! Battery charge was not tested yet.

Flash

JP1
(○) GPIO0      ➙ GND (Bootloader mode)
[○] TX (GPIO1) ➙ Programmer's RX
[○] RX (GPIO3) ➙ Programmer's TX
[○] VCC        ➙ +3.3V
[○] GND        ➙ 0V (GND)

Schematics

━━━┓
   ┣━ I2C bus (GPIO21/GPIO22) ━ SHTC3 
 E ┣━ Top left key (GPIO38) & deep sleep wake up
 S ┣━ Top right key (GPIO39)
 P ┣━ Bottom left key (GPIO37)
   ┣━ Bottom right key (GPIO36)
 3 ┣━ Red LED (GPIO4)
 2 ┣━ Green LED (GPIO18)
   ┣━ White LED (GPIO23)
   ┣━ USB power probe (GPIO33)
━━━┛

Notes

• GPIO13, GPIO14 , GPIO19 and GPIO27 are reserved for an Eink display.
• GPIO9 and GPIO10 are reserved for the QuadIO flash mode.
• GPIO25 and GPIO26 are reserved for an unknown device.
• GPIO35 is reserved for the unpopulated and unknown U7.
• There are traces and footprints for a buzzer.
• There are traces and footprints for a fifth switch.