I have run out of inputs on my root iso version 3. I see in the wiki that 3 gpio pins (36, 39 and 25) are used as internal test points. Its it possible to solder wires to these test points and use the gpio pins as inputs?
regards
james
Hi James,
Yes they can be used. (There is a 10 pin version in the pipe line too! that I’m about to request beta testers for).
Its worth noting, that these pins are directly connected to the ESP32, so please ensure you keep to the electrical specifications of the ESP32 IE 3V3.
Hi Pete,
thank you for the detailed reply. thats great news, I will add a pcb on the pin header with opto isolation and some caps for noise filtering…
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Keep us posted on how you get on!