Closed for Thanksgiving (Monday October ...

We are happy to announce the arrival of the Battery Edition Marble Machine. Starting today it is available at our website for backorder, and will be fully available for purchase starting tomorrow May 16. You are probably familiar with its older cousin, the Solar Marble Machine that has a clever circuit that delivers short bursts […]

Hey!?! Didja know we didn't have a link to the BS2 code for the Sumovore BS2 add-on board? Well, we did, but it was on the news posting, not the BS2 adapter board page (it does now!). Grant did a great job setting up framework for a great dual-purpose BS2-controlled Sumovore. Set it down on […]

This is a neat little one-chip circuit we originally tuned for use with our "SM1" Stepper motors. We've presently sold out of the motor, but this circuit has proved to be a good unidirectional (1-way) driver for small stepper motors.

What's so special about the new SCC3733a-MSE? Two things: It's machine-assembled with new high-quality Russian solar cells (the best commercial cells we've tested yet) It comes with a Miller Solarengine circuit pre-etched on the rear of the solarcell! We have only a limited number of these cells presently, so if you're looking for the absolutely […]