Our GraviTrack Marble Machine Kit is our newest addition to the Marble-Drop mechanism family. Elegant, swooping hands pass marbles to each other to the top of a sweeping multi-level track, available in either solar or battery configuration! Approximately twice as wide as our spiral Solar or Battery Marble machine kits, the GraviTrack is still desk-top […]
Circuit: Stepper Motor
Dave Hrynkiw
July 12, 2007
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. Parts required are:
- 74AC240 Octal buffer chip
- 4 x CP0.1µF capacitors
- 100k resistor
- 2 x 47k resistors
MORE POSTS
KISS and Show n' Tell
Herbie the Mousebot, that lovable robotic rodent of ours, is a pretty popular critter. Seeks light, avoids obstacles, chases other Herbies (when modified), and is generally a swell robo mus musculus. He doesn't whistle and can't quite drive a steamboat like certain other mice, but he's gets by alright. What most people probably don't know about […]
New Vibe Motors!
We've finally come upon a suitable replacment for the venerable, discontinued VPM vibrating pager disk motor. Ah, it was a splendid device, but it sure was easy to break those motor leads... Ah! But the new VPM2 has wires prebonded to the motor, and it's slightly smaller too! We welcome our new vibrating disk motor […]
Project: Experiments in Watermelon Filam...
It takes a while to get to know all the quirks of your 3D printer and filament well. We thought we'd add to the knowledge base and share what we've learned about using the eSun 1.75mm PLA filament in Glass Watermelon Red on our Kossel Pro delta style 3D printer.
Solarbotics has been operating for more than 25 years, bringing electronics know-how and supplies to both the electronics professional and hobbyist. We'll be happy to help you too!
Solarbotics, Ltd. is not responsible for misprints or errors on product prices or information. For more information, please see our Terms and Conditions.
Warning: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
Please visit www.P65Warnings.ca.gov for more information. This item was manufactured prior to August 31, 2018.