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TL047 based amplification circuit connected to an Accutronics 8DB2C1D Medium Length reverb spring, all mounted onto a thick mahogany slab. Made for Tracky Birthday.

I have built a custom enclosure for the highlyliquid universal MIDI retrofit. The i/o connections are exported to a DB-25 connector – this allows a variety of keyboards to be used with the box after a DIP switch adjustment. Pictured is my Casio Rapman keyboard, ready to receive triggers.

My take on the popular 555 timer based “Atari Punk Console”. I guess these jam-packed units are amongst the smallest APC’s that have been built so far. The black one went to Pierlo as a gift. This is a great way to get started with DIY audio electronics. Schematics for a 556 (2x 555 in one package) version can be found here.

The Gravel Box is an audio effect unit based on the HT8950 CMOS voice modulator chip. It’s a grainy sounding 8-bit frequency shifting circuit, perfect for destroying hifi audio material…

Audio demo

TR-606 drumloop fucked up with Gravel Box

Pictures

The Simplesizer is a DIY analog synthesizer project by Thomas from Anyware Instruments. Very classic features here: The sound sources consist of 2 hard syncable Oscillators (saw/pulse) with ring modulation and a noise generator. The filter is a 24dB lowpass design with basic envelope control. The routing matrix of the LFO (triangle/square/S&H) provides flexible modulation possibilities. The sound volume is shaped by a 4-stage ADSR envelope. There are various inputs for external parameter control as well as a jack for feeding signals through the filter.

I decided to make a desktop expander instead of a keyboard version. First a 3D mockup has been made in order to define the parts placement, shape and colour of the synth. The case consists of 2mm aluminum sheet that has been manually bowed, varnished and screenprinted. I’m very happy with the result and would like to thank Alexander Oehme for his help with crafting the hardware.

If you would like to build your own Simplesizer, check out the project page (german only).

Audio demo

Simplesizer Bassline, no external FX added

Pictures

This device is a clone of the Coron DS-8 Drum Synthesizer. It was built on a PCB I ordered from Marc Bareille. The DS-8 features 1 VCO with sweep function, a Noise Generator, a fast LFO and a VCA with decay control. My version has an additional detachable Mini-Drumpad and a CV input. The sound spectrum reaches from Electro-Zapps over Disco-Toms to Sci-Fi-Sweeps.

Audio demo

DS-8 Clone, 8x overdubbed, no external FX added

Pictures

A ridiculous toy transformed into a wild skratch machine cased in a heavy duty plastic enclosure. The chip inside is loaded with a carelessly cut asian trance loop. It’s partly broken now - the rotating LED ring was not half as sturdy as the ABS case is…