DIY midi organ pedals

Good day! I have an old bass pedal assembly out of a Kimball organ that I hooked up to a midi controller (can handle up to 32notes) about 15 years ago, which plugs into my Roland XP 10 via 5pin midi. The synth assigns whatever sound to the pedals. Basyn sold something similar made for a 13note pedal assembly. Looking for another one. Can’t find either. Does Arduino make anything similar? With a preprogrammed/encoded chip made to convert the analog to midi? Does teensy make anything similar?

The closest item I know of might be SparkFun MIDI Shield - SparkFun Electronics - you could pass analog signals (at the appropriate voltage) to an arduino that then outputs MIDI via the shield MIDI Shield Hookup Guide - SparkFun Learn

You do need an arduino that has free ADC pin(s) for more fancy stuff

Thanks for the information!! I did look thru things like the Arduino uno and nano… and the Teensy 4.0. Wanted to make sure the setup can handle 20notes/pedals (Im trying to use the 20pedal assembly out of a Yamaha Electone)

Are the peddles actually analog or are they just on/off switches? Most arduino type boards don’t have too many analog inputs.

I’d just hack a 2-3 octave MIDI keyboard controller. You’ll enjoy the controls.

Edit: MAudio Ozone, for example:

What did you use before?

I have a 13note assembly from an old Kimball organ. It’s analog. Just metal tabs that make contact when the pedal is pressed. Each pedal is wired into a ribbon cable, and the Cano circuit board converts it to 5pin midi out. The 20pedal assembly out of a Yamaha Electone is what I’m looking to upgrade to. It’s digital. Contact is made with the bottom of the circuit board when the pedal is pressed.

Have thought of trying that. I have the inerds from an old Roland synth that should work… but wiring in the organ pedals seems a bit beyond my simple understanding of electronics. :grin:

I mean, the entire project is ‘wiring in the organ pedals’ and any road you take in adapting old ones into new environments/keyboards is going to require understanding of how those electronic pedals work. Pedal hardware isn’t what I’d call analog or digital until you connect it to something. You mention Cano or Basyn briefly, they seem like helpful starting points. It would be surprising if Yamaha didn’t make any changes to their Electone pedals since introduction in 1958.

Most electronic keyboard instruments have a pair of contact pads to determine velocity. As I understand it, pedals don’t normally capture velocity like that so you’d only have to capture the simple pedal up/pedal down state and insert it into a single pad on the donor keyboard which digitizes for MIDI.

This is a guys diy pedal project. He makes it sound simple. Wired the pedals into a teensy board (not sure which model) and one of the midi ports you can send out to a synth

He doesn’t even mention any encoding/programming the chip on the board

Probably the most detailed tutorial I’ve found is this one. It has schematics, parts list, link to the Arduino library for programming. I was mostly was wondering if there was anything like the Basyn or the Cano Midipeds, that was already programmed and ready to go. They don’t sell those anymore especially since USB has all but replaced 5pin midi. I was also looking for a board I can wire 20pedals into.