After way too much time away from electronics, I finally have something new to share. NANDulator is a simple but fun noisemaker based around two CMOS chips. Check out the demo video below, and have a look at the dedicated page for more info and a schematic.

NANDulator: a wonky, lo-fi DIY noise synth

NANDulator is a simple, lo-fi, CMOS-based noisemaker synth. It uses two IC’s, a CD4093 (quad NAND gate) and a CD4046 (VCO/phase-locked loop), and a handful of passive components. I think it’s simpl…

Some 13 years later, I’ve done a little revision to the Modutronic Messmaker circuit schematic. The Messmaker was intended to be a “beginner” build, and this new revision removes some complexity (and cost). The original version is also still available here and from a link on the page.

The original version includes a direct output from the 555, as well as inputs for the LM567 AM and the 555 CV in. My original thought was that these would be cool features for a beginner’s circuit, giving one easy access to some modular-style interconnectivity. However, all these years later, even I have rarely used these features. The quick & dirty nature of this circuit also means they don’t work the way one might expect with other modular stuff, which has become more common.