Small coin cell battery switch CR2032

thingiverse

I wanted to add a horn onto the wheel of my kiddo's pedal car using a small 3V buzzer. I just needed a way for the current to activate when center of the wheel was pressed was pressed. I didn't have a lot of room to work with under so I came up with the following design to hold a cr2032 coin cell which battery. I added some contact strips on the top and bottom with glue and soldered wires from it to the buzzer. If you have a bit more room this might work for you. https://www.thingiverse.com/thing:1889896