I created a simple flow that checks to see if a switch is depressed and deployed it, but it didn't work. Thinking that my GPIO was fried, i ran a little python script to read the same GPIO pin, The python script worked fine and could read the switch. When I went back to the node-red console, I sa…

Can't read GPIO without first running some python

Abstract2Actual 9 October 2018 04:05 2

I figured out how to get it to work.
I have a switch connected to GPIO 21 on one side, and ground on the other. I initially set the resistor type to pulldown when configuring the input node. Changing the resistor type to pullup and checking the read initial state checkbox resolved the issue.

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Can't read GPIO without first running some python

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