eurorack
Eurorack DIY projects
This is a collection of my DIY projects for Eurorack modular synths.
Some additional information can in most cases be found on my YouTube channel: https://www.youtube.com/c/MeeBilt
3340-vco:
Voltage Controlled Oscillator based on the AS3340.
909-clap:
TR-909 handclap based on the Hex Inverter NeinOhNein Clap with all mods included.
909-hihat:
This is the classic TR-909 Hi Hat with the crispy lo-fi samples that we all love.
909-kick:
TR-909 kick based on the Hex Inverter NeinOhNein Bass Drum with all mods included.
909-rimshot:
TR-909 rimshot based on the Hex Inverter NeinOhNein Rimshot design.
909-snare:
TR-909 snare based on the Hex Inverter NeinOhNein Snare Drum.
bassbuddy:
Step sequencer for the Erica Synths BASSLINE DIY.
bmult:
Buffered mult with two 1-to-2 or one 1-to-4 outputs.
busboard:
A small busboard with room for 10 pcs 16-pin boxed headers and provisions for a +5VDC linear regulator.
diode-vcf:
Moritz Kleins diode ladder VCF implemented as a Low-pass filter only. Two CV inputs, one with attenuator and one with attenuverter.
dvca:
Dual LIN/LOG VCA based on the MFOS design by Ray Wilson.
feitw:
My take on the famous "Fastest Envelope in the West", designed by René Schmitz.
midi-sync:
Clock Generator with three sync modes: Internal (tap tempo), External clock and MIDI clock
RESET output and 5 Clock Divider outputs (/1 /2 /4 /8 and /16)
misc:
Assorted nice-to-have-stuff.
noise_board:
The 909 noise generator as a piggyback board. Used in my 909 drum modules.
output:
An output module that converts the Eurorack levels into balanced line levels. LED bargraph VU-meter, gain trimmer and a headphones amplifier with a separate volume control.
pmult:
A passive multiple with two 1-to-3 or one 1-to-6 configuration.
snh_noise:
Sample & Hold with an additional white noise generator. The noise output is normalled to the signal input.
umix:
A DC-coupled mixer with 4 attenuverter inputs, two outputs with an LED level indicator and a +5.00 VDC voltage reference.
vc-lfo:
A Voltage Controlled LFO with Triangle, Sine, Square, Ramp Up and Ramp Down outputs.