Just completed: an auto-switching practice guitar amp.
It turns on when you plug in a guitar, and the speaker turns off when you plug in headphones – no confusing switches needed!
- 1 Minty Amp kit
- 1 mono 1/4″ plug with NC and NO switches (guitar in)
- 1 stereo 1/4″ plug with two NC switches (headphones out)
- 1 random speaker found laying around the space
- 1 9v battery adapter
- 1 Altoids tin
- a liberal scattering of solder, wires, and hot glue
Total cost: about $10
Built by Sacha, photos by Ryan L