Drone Box Pictures

Pictures of the final build for the mini synth/drone box.

Quad Oscillator Drone Synth

I have been working on a new circuit based around a Hex Schmitt IC.  This offers 4 oscillators and two buffers.  The oscillators are controlled through four potentiometers.  The oscillators are grouped into two pairs with a dual pot for each pair and an additional separation control to individualize each pair.

Volume control on the output, on/off switch and a standard 1/4" output jack.  The circuit runs on 9VDC.

Enclosure is made of die cast aluminum and I gave it a sort of scuff polished looked; something different than paint.  Great small design is easy to handle or perfect for placement on a table amongst other great synths ;)

Audio sample was recorded with the signal pushed through a delay and phaser effect.  On its own this is a great source for some drone type soundscapes and textures.
Quad Oscillator Drone Synth by gebrochene augen


Pictures to be posted soon!

Circuit Bent Casio MT-36

Just finished my latest bend, a Casio MT-36.

This one has an added filter (distortion and tone control), LFO and 5 glitches.  filter has frequency and separate tone control knobs.  The LFO has a Rate control and Amount control.  This keyboard uses a variable capacitor, rather than a resistor or crystal, on the CPU.  With this I used a potentiometer to adjust the amount of LFO signal fed into the timing cap.  This gives the sound out put a wobble or sequenced/ step effect.  At a high enough level, the LFO will make the keyboard loop and glitch.  In addition, there are 5 different bend points (glitches) that I included and are activated by 4 switches.

Output is via the standard (on bard) 1/8 output jack.  Runs on the standard Casio Power Supply (7.5 VDC)

Circuit Bent MT36 demo by gebrochene augen