OLD - Raspberry Pi Guitar Effect Box

Edit 4: the schematics for this project are now available as PNG files on github: https://github.com/doitnowlabs/rpieffectbox In this video, I deomstrate the Raspberry Pi based guitar effect box/pedal that I built. All the audio processing is done by Pure Data, a free alternitave to Max MSP. A python script that I wrote takes input from four pots (connected to a MCP3008 (not MCP2003) ADC chip, which is in turn connected to the pi through SPI) that change effect parameters and three pushbuttons that cycle through the effects and allow you to enter 'Edit Mode'. The display I used was a blue iTron VFD with a serial backpack to allow for easy communication with the pi. In this video I am playing a 2008 Epiphone Les Paul with the selector switch in the middle position through a Vox Vt30 modeling amp. Here is a list of the effects (Possibly not in the correct order): Chorus - Good ol' chorus Warble Chorus - Basically a chorus piped into a chorus which modulates a chorus which modulates the incoming guitar signal Tremolo - It's like a automatic kill switch! Vibrato - A nice, smooth vibrato Wah - Think Hendrix Low Fuzz Wah - More Hendrix Medium Fuzz Wah - Even more Hendrix High Fuzz Wah - You get the picture Ring modulator - Reminds me of DTMF tones... And the Daleks. Ring Modulator with Fuzz - Ring mod + fuzz = good Fuzz - Farty, dirty, and, by itself, possibly my least favorite effect ever! Subtractive Overdrive - Subtract one signal from another to get an overdrive sound Tubescreamer - I think this sounds accurate... Tell me what you think. Digital Delay - Echo, Echo, Echo Tape Echo - Digital delay, but with a high pass filter at about 400hz, and some noise And a clean channel - Straight through Download Pure Data here: www.puredata.info If you notice any lag between my strumming and sound from the amp, I assure you that it's not there in real life. Hope you enjoyed this video! Thanks for watching! Tubescreamer is a registered trademark of Ibanez, inc. The name 'Tubescreamer' was used in this video for comparison purposes only. Edit 3: As part of my reply to Davidemmanuelkatz, here is a link to a form post related to midi syncing: http://puredata.hurleur.com/sujet-1471-midi-clock-sync Edit 2: I think that I completely failed to mention this blog anywhere: http://guitarextended.wordpress.com I got the inspiration for this project from here, and one or two of the effects, too. Thanks, guitar extended! Edit: I now have a git repo for this project, and other projects in the future. Here's the link: https://github.com/doitnowlabs