I have a few broken safe locks with operational keypads, i was thinking about building a lock based off the arduino. The problem is im not sure how to program this keypad to the arduino. I checked every button and noted all the resistance values. What are my options here. Hopefully you can read my handwriting
Those resistors.. in series with a 5k +/- can form a voltage divider. Hopefully an analogRead makes it possible to tell which key is pressed.
More info for the keypad would have been helpful..