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Modified Roland TR-626 Drum Machine adds #Arduino, Keypad & Touchscreen #circuitbending

In the interest of keeping wire mess to a minimum, Hackaday.io user Alpha Charlie took a novel approach to circuit bending a Roland TR-626.

The patch-a-tron is a 48×8 analog switch array for use as a solid state cable-less patch bay for circuit-benders and synthesizer. It’s controlled by touchscreen and MIDI and is currently connected to my Roland TR-626 Rythm Composer from 1988.

After that I cut into the clock traces on the Roland on 4 channels and replaced them with my own oscillators based upon a the Texas Instruments CD40106 hex schmitt trigger to allow me to ‘pitch-bend’ those channels. (All switchable of course!)

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View the full project here on Hackaday.io.


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