The synth is based around a couple 555 timers along with a 40106 Hex Schmitt trigger and a 4040 Binary Counter. I was over a friends house recently and we were listening to some acid house music and thought it sounded a little like my other fizzle loop synths. I decided to revisit the build and add a few other controls to be able to make beats.
The new version allows touch control modulation and has a built in tone and beat generator via the 4040 and 40106 IC’s. The 555 timers create the tones and these can be controlled 3 ways, through a pot, slider and LDR.
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, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, 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.