"Arturia MiniBrute SE (Mint Condition in box with manual and power supply)
-The Minibrute is in mint condition, barely used.
SkiniBrute Desktop Case (New - Unfinished wood, finish with your choice of finishes)
-The SkiniBrute case is brand new, just needs a finish on the wood. I ordered it unfinished because I was planning to do a white stain, to match my white moog voyager.
The Desktop case has never been installed on the unit, I purchased it new from GMUSynth and they custom build them by hand."
A while ago, I bought an old bontempi keyboard on ebay for €3.50, but it stopped working shortly after I got it. My original plan to simply replace the defective sound chip was ditched for a fully custom enclosure with its own interface - the only thing remaining from the original are the keys. The sound generation is done with a teensy and the fantastic teensy audio board.
There is still functionality to be programmed (arpeggiator, presets, sampler among others), but the hardware part is done, and enough is there for the synth to be really fun to play. A more detailed walk-through might come later."
Building a custom synth enclosure
Published on Aug 12, 2016
"This is a follow-up on the demo of the synth, this time covering how I built the custom enclosure."
DIY Teensy Synth: the Electronics
Published on Sep 15, 2016
"In this follow up video, I talk about the electronics part of my Teensy-based Synth. Note that I'm using the Teensy Audio adaptor to generate the audio, so all the electronics is only about control signals, no audio processing, which simplifies things quite a bit."
"Hope you will enjoy my first live with the OP-1
Listen to the final version: https://soundcloud.com/thojj/thoj-wit..."
Credit:
Post production - Romain Magnan
Photo cover - pierrebentolila.com
Teenage Engineering OP1 - Live looping #2 [Thoj]
Published on Nov 24, 2015
"Hope you will enjoy my 2nd live with the OP-1 :)
Nothing pre recorded, this a complete live performance
Listen to the final version: https://soundcloud.com/thojj/thoj-nig... "
"Welcome to the ultimate chip-audio workstation. The Oscillographic Block (OB) combines a three channel digital synthesizer voice with integrated function generators, preset memory, algorithmic patch generators, and CV control. Designed for maximum flexibility, the OB can generate everything from arcade impacts and abstract 8-bit drums to looping musical sequences and multi-timbral soundscapes.
The module utilizes the SN76489 chip, a digital sound generator manufactured by Texas Instruments during the early 1980’s. Better known as the “PSG” chip, the SN76 features two square wave channels, a noise channel, and dedicated 4-bit amplifiers. The SN76 possesses a characteristically rich, dark sound, and was used in a number of beloved videogame and computer systems, including the Sega Master System, Sega Game Gear, ColecoVision, BBC Micro, and IBM PCjr.
The OB pairs the simple, nostalgic tones of the SN76 with a deep and innovative control system. Each SN76 channel is paired with two dedicated function generators for controlling pitch and amplitude, for a total of six function generators per preset. In standard mode, the function generators snap to discreet values; in interpolation mode, they smoothly glide between values, generating continuous LFO-like waveforms. A number of standard shapes are provided, but intrepid explorers will find themselves programming custom shapes via the powerful Envelope Graph interface. Combined with their extremely wide speed deltas, the function generators can be used to create anything from short drum sounds and 1-shot effects to slowly moving textures and sequences.
The resulting patches can be saved to any of the OB’s eight preset slots. Presets store virtually every module parameter, and are written to an SD Card for easy management and portability. Each preset is instantly recallable using the Preset CV input or the dedicated gate inputs running along the center of the module. By storing a 1-shot percussive sound in each slot, the eight gate inputs can be used to trigger each preset drum-machine-style, while the preset CV input can be used to sequence or sweep through presets with control voltage. Presets can also be algorithmically generated using the RANDOM button according to three distinct modes: Drum Mode, which generates bass drums, snares, hats, cymbals, and effects; Envelope Mode, which randomizes the function generator shapes; and Sequence Mode, which generates full looping patches and sequences.
Four assignable CV inputs allow for external control over pitch, amplitude, or speed on any SN76 channel. Each input’s assigned routing is stored along with the preset system, allowing for dramatic modulation permutations without physically re-patching the inputs.
