Build a shutter tester for Focal Plane shutters - Cheap, Easy & it Works

[F4U]

Would be nice if there was a "Heathkit" of this.

 

[ronron]

Hi, Ports 39 34 36 require pull up, and don't see any on your descriptions, is it because you're are using a specific rotary button with internal pull up?

 

[koraks]

Ports 39 34 36 require pull up, and don't see any on your descriptions

Pins, not ports, and they can be pulled up in software. I virtually never use hardware pullups.

 

[ronron]

Pins, not ports, and they can be pulled up in software. I virtually never use hardware pullups.

Hi, no all pins GPIO have pull up and down integrated in the ESP32 execpt pins GPIO36, GPIO39, GPIO34, GPIO35. If the digitalpin (eg: 36 is configured to "high" and you turn de rotary button as the same time, you will probably burn the "pin". I just ask that to make a PCB for Nyglin, i don't have the code so i can't make it without any informations. Pin, ports my english is pretty far now so by the way sorry for that!

 

[koraks]

You're right, those are restricted pins mostly used for adc. I assume that if they're used here as a digital input, the pullups are on a rotary encoder module and that no bare encoder is used.

 

[ronron]

I will put some place for resistance.

 

[koraks]

Yeah, that's easy enough. There's always a way to fit a couple of 0603's somewhere.