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!)
RA8875 Driver Board for 40-pin TFT Touch Displays – 800×480 Max: Have you gazed longingly at large TFT displays – you know what I’m talking about here, 4″, 5″ or 7″ TFTs with up to 800×480 pixels. Then you look at your Arduino. You love your Arduino (you really do!) but there’s no way it can control a display like that, one that requires 60Hz refresh and 4 MHz pixel clocking. Heck, it doesn’t even have enough pins. I suppose you could move to ARM core processors with TTL display drivers built in but you’ve already got all these shields working and anyways you like small micros you’ve got. Read more.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.