Circuit: Herbie by Randy Sargent

It's really nice to receive pics of projects people have built out of our book "Junkbots". Here's one of the latest: the Pendulum by Christopher Pepe. Nice magnetic suspension mechanism! Read More...

The biggest complaint we've ever had is that the Sumovore is boring. I mean, yeah, it can beat the tar out of most other sumos in the ring without batting an eye. But it's just so boring to watch. It'd be funner to watch the paint dry on a pot of boiling water. So, after […]

Well, the last batch of Escap gearmotors went very fast. Let's hope this batch lasts a bit longer! Unlike the last set, this set has a higher reduction ratio of 663:1 instead of 362:1. This means it starts turning 0.46V (!) drawing only 3.3mA (!!) It's a 3V rated motor, but our tests show that […]

We're still digging out the new inventory, and the next addition to the Solarbotics lineup is the RW2i, which is the same profile and rolling size as our very popular RW2, but is designed with a narrow hub.We're able to do this by moving the set-screw hole inside the hub, so to cinch the screw […]