gpio out

Sets a pin high or low from each message.

Properties

• pin — the GPIO pin. Default 12.

Wiring

Input — payload, read with Python's bool(): a true value sets the pin high, a false one (False, 0, "", None, an empty list) sets it low. A message with no payload sets it low. The input is type bool, so any output can wire to it.

This node has no output.

Behavior

The pin stays where the last message set it. It is set up as an output when the flow starts, before any message arrives.

Errors

• A pin the board can't use, or one another node sets up differently. Deploy stops and says why. See What gets checked and Hardware is shared.