p_wats
Well-known member
I built a simple LDR-based expression controller to use with my Synthstrom Deluge, but with a few tweaks it works well with pedals too. Here it is controlling the pitch for my Leprechaun as it mangles a beat from the Volca Sample:
Here's a gut shot to show how simple it all is:
It's basically a stereo jack with a toggle to decide which connections go to tip and sleeve (a trick used in the cheap M-Audio expression pedal that I found useful), then an LDR, a 100K pot to adjust sensitivity and a toggle to decide the order of the LDR/Pot (allowing you to decide if light makes the resistance go up or down). Most if it came from a simple image search on how to get an LDR working with Arduino, but that's overkill for simple pedal control.
Lots of fun!
Here's a gut shot to show how simple it all is:
It's basically a stereo jack with a toggle to decide which connections go to tip and sleeve (a trick used in the cheap M-Audio expression pedal that I found useful), then an LDR, a 100K pot to adjust sensitivity and a toggle to decide the order of the LDR/Pot (allowing you to decide if light makes the resistance go up or down). Most if it came from a simple image search on how to get an LDR working with Arduino, but that's overkill for simple pedal control.
Lots of fun!