If you are going to pull-up the switches to a 5v source then I think you can pull-up through a pair of resistors used as a voltage divider.

That way the input pins will not receive 5v. 3k and 2k resistors?

Tom

If you are going to pull-up the switches to a 5v source then I think you can pull-up through a pair of resistors used as a voltage divider.

That way the input pins will not receive 5v. 3k and 2k resistors?

Tom

You might not find the timing to be fast enough nor precise enough.

Consider 74ls373 to latch the value to be processed by software.

You may not want to use he but the timing it offers may be what is necessary.

I used that device to connect my coverage analysis hardware to an address bus.

Tom

Begin by reading this:

https://forum.arduino.cc/t/converting-t ... lux/180676

Please post your circuit diagram with part#s

Where have you looked? What did you find? (Google.com ?)

Tom

Do you mean "with blue tooth" or more generally that includes: wifi, usb, sound/ir/... i/o, gpio,wired,???

https://www.electronicproducts.com/choo ... -supplies/

Start here.

https://learn.adafruit.com/micropython-hardware-digital-i-slash-o/digital-inputs 1) i recommend a pull-up on that pin or enable internal pullup: that way it is high or low 2) you will experience bounce and i think you will need to debounce the value Take a look at what adafruit has written for more....

(1)Please post the pin numbers and (2) the circuit.

(3) How will you handle bounce?

(4)Maybe a code snip too

Tom