https://github.com/ChaoticAudio/cccongress2015/wiki/PCB

The idea behind this PCB is to show basic electronics and create a small low-fi, low price, synthesizer

a good price for the basic package with all parts should not be more then 5-7 EUR

maybe we should also think about basic “modular” capabilities with simple breadboard cables

• Atari Punk Console, based on 556
• Chaos NAND, based on 4093
• Baby10 Step Sequencer, based on CD4017B
• Some basic Low-pass/High-pass Filter (RC Filter)
• Maybe some kind of Keyboard like input
• some kind of distortion

• http://www.diyaudiocircuits.com/tutorials/8-step-sequencer/
• https://en.wikipedia.org/wiki/Atari_Punk_Console
• http://www.diyaudiocircuits.com/tutorials/atari-punk-console-how-it-works/
• http://www.synthrotek.com/products/lo-fi-synthesizer-circuits/chaos-nand-synthesizer/chaos-nand-synth-schematic/
• http://www.diyaudiocircuits.com/schematics/4093-nand-gate-oscillator/
• http://www.diyaudiocircuits.com/schematics/pt2399-echo-application-circuit/
• http://www.diyaudiocircuits.com/schematics/pt2399-surround-delay-application-circuit/