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MFOS Alien Screamer

MFOS Alien Screamer


This is a fairly simple project and is perfect for a synth-DIY newbie or a young person interested in how to build a synthesizer or making noise boxes. This project results in a little LO-FI noise maker you'll find yourself playing with again and again.

This is for a PCB only, suitable for multiple formats.
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Availability:In stock



  • Easy to build
  • Uses one 9V battery (portable)
  • Built in amplifier and speaker.
  • Kludge area on PC board (customizations...)
  • Low current design extends battery life
  • Makes a plethora of cool and interesting sounds
  • May stimulate plant growth
  • May attract alien visitations - CAUTION ADVISED
  • May cut into TV viewing time - CAUTION ADVISED
  • Parts Kits and PCBs available for sale



There's no time like the present to start that hobby you've wanted to get going for years. This is a great project for beginning your synth-diy journey or if you're already building sound gear this is a great project to make for that imaginative young person in your life. It's a great introduction to synth-diy (the oscillator is a ramp core driven by an exponential V to I convertor). Don't expect to play this as a traditional instrument (although it does a decent imitation of a theremin in the right hands) but do expect to have a lot of creative, imaginative sound making fun. From star trek communicators to birds tweeting you'll find a wealth of coolness.

There is a nice kludge area on the PC board for adding your personal electronic touch to the circuit. If you come up with a cool mod and would like to share it with the diy community send it in and I'll post it with credit to you.

Sample MP3s (Last 5 have effects added)





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Brand Music From Outer Space
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