esphome-things

Flash

JP1
(○) GPIO0 ➙ GND (Bootloader mode)
[○] TX    ➙ Programmer's RX
[○] RX    ➙ 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)
━━━┛