SX-150
Articles about SX-150:
Gakken SX-150 Synth MIDI Mod

MrBook has shared documentation on his awesome hack to add MIDI to the Gakken SX-150 synthesizer.
Here’s what you’ll need to turn the Gakken SX-150 into a MIDI synthesizer:
- Gakken SX-150 Analog Synthesizer Kit
- Arduino (This one is the classic, but my favorite ones, are the ones from Modern Device)
- MCP4921 12-bit DAC
- 4N28 Optoisolator
- 1/4” Audio Jack
- DIN 5 Pin Chassis Socket (Female MIDI plug)
- Diode (N4148)
- Resistors(220 ohm, 100k ohm and 3.3k ohm)
- Wire, breadboard (or wherever you wanna do the circuit), soldering stuff and patience.
Details at MrBooks’ site. See this previous post for a demo of the Gakken SX-150 being sequenced by Ableton Live.
Remember the Gakken SX-150 synthesizer, the cheapy $54.95 synth kit?
While a lot of people dismiss the Gakken SX-150 as a music toy, it’s really a platform for experimentation, because it’s cheap enough to hack on without too many worries.
With the addition of a MIDI input and a 1/4′ input audio output, the Gakken SX-150 becomes a great-sounding synth module, something you can sequence with Ableton Live or any other MIDI sequencer.
This video, via kbroom, shows what the Gakken SX-150 synth can do.
Detail on the hack are available at MrBooks’s site.
Testing the Gakken SX-150 Analog Synthesizer, a $54.95 DIY synth kit distributed in the US by Maker Shed.
via hampush
zeni69 has created a mod for the Gakken Analog Synthesizer SX-150 based on a alcohol sensor – turning it into a breathalyzer-controlled SX-150 Sakesizer!
via zeni69





