all projects

in no particular chronological order

hardware hacks and music gear projects:

• four buttons on one (Arduino) ADC pin
• a simple ringmodulator-ish FX pedal
• yet another perpetual pendulum (Arduino project)
• Wheelchair Accessible FX Stompbox – A Remote Control
• Brute Force Computation for Cheap Log Digital Potentiometers
• Touchpad as wireless (MIDI) expression controller
• (nothing less than) The Perfect Tea Timer
• clocked 8-bit random pattern generator for CMOS synth
• vintage clavinova YP-40 to MIDI master keyboard
• MIDI OUT for vintage Korg CX-3
• Velocity Adjustment for MIDI Masterkeyboard
• a 74xx-defined radio (shortwave)
• Output-Transformer-Less Tube Guitar Amplifier
• An EL84 tube guitar amplifier
• digitally controlled HiFi Amp with 4 way mixer
• MFOS Sound Lab Mini Synthesizer (Part 2) – A MIDI2CV Converter
• MFOS Sound Lab Mini Synthesizer (Part 1)
• 12AT7 Overdrive INSIDE the Korg CX-3
• Low Voltage Organ Overdrive with 12AT7 (ECC81)
• JCM800 preamp
• ignition coil (lighting a candle)

tools & techniques

• Temperature controlled etching bath with magnetic stirrer
• (semi) automated drill press table for PCB manufacture
• 2 years of toner transfer – tips that won’t hurt you
• interfacing early 90’s HQ digital oscilloscope from LINUX
• send numpy/csv data to RIGOL DG4202 arbitrary waveform generator via LAN

software hacks and fixes

• a quick and dirty fix for yakuake’s “open new tab in same directory” issue
• AltGr Trouble with Synergy – a workaround
• LTspice & NumPy – Part 2: Fast Convolution Filter
• LTspice & NumPy – Part 1: seamless integration of LTspice in python signal processing
• a quick and dirty fix for yakuake’s “open new tab in same directory” issue
• HOWTO use CD4000_v.lib with LTSpice