I am attempting to rebuild a toy bulldozer. This toy came with a set of buttons to flash lights, make sound, preset movements. This is a one sided PCB, with conductive pad buttons.
There are 8 functions from only 6 wires. b1 = yellow and white b2 = black and white b3 = red and white b4 = yellow and brown b5 = black and brown b6 = red and blue b7 = yellow and blue b8 = black and blue
Is there a way to make use of all the buttons through the Arduino Uno, without cutting traces and re-soldering. I'm enjoying the challenge, but my skill set is low enough, that I'm having a tough time finding the terms I would need to search to find the correct answer. *so