DIY-Analog-Synthesizer for the Pocket

This is a project I've wanted to do for a long time A complete mini-Synthesizer with midi and analog sound-generation and analog filters. It contains a standard midi-keyboard. For the CV-Converting i used an arduino-Nano and a digital to analog chip. VCO: Two AS-3340 VCO with Triangle/Ramp and Rectangle Waves One Noise-Generator Sync and Ring-Modulator VCF: One Steiner-Parker Synthacon Filterclone switchable LP/BP/HP/AP and one 24 dB AS-3320 VCF ADSR: Two AS-3310 ADSR LFO: Two LFO with Sine, Triangle and Rectangle Waveform One Arpeggiator with 2 and 4 steps A little Patchfield for different in and outputs