The Octave Switcher is a modular adaptation of the circuit “Five Octave Switch and One Octave Adjust Pot” designed by Ray Wilson.
A short demo of the SLMS, showing the following features: CV input, Low Pass filter with resonance, VCA, Gate input, Attack/Release with retrig and LFO.
The CV and Gate signals are generated by MIDI interface CVpal by Mutable Instruments. The sequence is generated by Qtractor on Linux.
Recorded with my Tascam DR-08.
Here comes my next conversion of Ray’s classic analog synthesizer, the Weird Sound Generator!
This is the same process as for my previous SMT/Eurorack conversion of the Sound Lab Mini-Synth. The circuit is identical to the original, including component references.
Ray Wilson was the guy behind Music From Outer Space. He was a huge contributor to the Synth DIY scene. He designed a lot of cool projects, offered kits, schematics and a huge amount of tips and tricks for beginners. He even wrote a book on how to build an Analog Synth. MFOS kits and PCBs are still available through various resellers (see synthcube).
Continue reading MFOS Sound Lab Mini-Synth in SMT
Hand soldering Surface Mount Devices (SMD) scares a lot of builders, but it is easier than what it looks like. Even sometimes, it’s easier than soldering classic Through Hole Components. Really!
Updated on March 24th, 2021
Continue reading How to Hand Solder SMD
The attenuator – inverter is a tool for modifying a voltage, Control Voltage (CV) or any audio signal.
Continue reading Attenuator – Inverter
An excellent video on soldering techniques. SMD soldering is simple! Even if you don’t own a hot air station, the techniques demonstrated here are very helpful to anyone interested in SMD soldering.