Question Screen Controls


Hello all. I am having trouble getting my keyboard to work for screen controls.

I have connected VCC, GND and KEY pins from the keyboard to my main driver board that powers the screen. I am measuring 3.3v into the keyboard. When I depress the buttons to activate the screen controls, I am not getting any response on the screen, indicating that there is something not right. Does anyone know why this is the case? Have I made a mistake with the wiring? I really am not sure what I have done wrong.

Here is a picture of the controller board. I've removed the onboard tact switches. I wired up wires diagonally on the pads where the old tact switches were, and measured to make sure there was no continuity between pads.


Here is my wiring (diagonal)