Hi, I have a project that I want to try doing without an Arduino.
I want to use common 3 pin sensors (GND, VCC, SIG) such as touch sensors and knock sensors to simulate numpad key presses which I can plug via USB into my computer.
I popped open one of my old USB numpads and took out the board, I figured out the combinations that gives me the desired keys. The keyboard basically has a 5V, GND, and bunch of pins that if I touch different pins together I get different keys typed into my computer.
I've tried hooking up a pair of the key pins to push buttons and it works perfectly.
However what I want is to hook up certain keys to sensor switches.
I don't have any experience with keyboards so I just hooked up as follow: Numpad 5V ---> Sensor 5V Numpad GND ---> Sensor GND Numpad pin 11 ---> Sensor GND Numpad pin 7 ----> Sensor SIG
(touching pin 11 and pin 7 together types the number "7" on my computer)
Well in the end it didn't work, but when I started pulling out 1 of the wires, it starts typing the key that I wanted to be typed when triggered, but instead of just typing when i trigger it, it just keeps typing it endlessly no matter what.
Is there a way that I could get this to event work at all?