ถ้าใช้ ESP32 DevKit ขา VIN 7-12V ดังนี้ครับ
Power
Power to the DOIT Esp32 DevKit v1 is supplied via the on-board USB Micro B connector or directly via the “VIN” pin. The power source is selected automatically.
The device can operate on an external supply of 6 to 20 volts. If using more than 12V, the voltage regulator may overheat and damage the device. The recommended range is 7 to 12 volts.
https://docs.zerynth.com/latest/official/board.zerynth.doit_esp32/docs/index.html
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