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AI-on-the-edge-device/param-docs/parameter-pages/GPIO/IO3.md
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Parameter IO3

Default Value: input disabled 10 false false

!!! Warning This is an Expert Parameter! Only change it if you understand what it does!

This parameter can be used to configure the GPIO IO3 pin.

!!! Warning This pin is by default used for the serial communication as RX pin (USB logging)!

Parameters:

  • GPIO 3 state: One of input, input pullup, input pulldown or output.
  • GPIO 3 use interrupt: Enable interrupt trigger
  • GPIO 3 PWM duty resolution: LEDC PWM duty resolution in bit
  • GPIO 3 enable MQTT: Enable MQTT publishing/subscribing
  • GPIO 3 enable HTTP: Enable HTTP write/read
  • GPIO 3 name: MQTT topic name (empty = GPIO3). Allowed characters: a-z, A-Z, 0-9, _, -.