Ladies and gentlemen, it is with deep regret that I present you with our last news post of August. Next week will become September, which causes uncontrollable weeping for students, parents of students, and anyone who was ever a student. Lots of pain all around. Heck, some of the Calgary trees are already starting to […]
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
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Make Something Useless Useful Update
We've been trying to Make Something Useless Useful since 2012. In order to do that we've been donating a percentage of past sales of the Useless Box to Plan Canada. In year 2013 $5,000 went to Plan Canada' Gift of Hope School Construction in Honduras.
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 […]
Robothon Success!
Congrats out to Grant, for bringing his "Ender's Wraith" to first place in the advanced mini-sumo category at last weekend's Seattle Robothon. We also picked up an award for "Most Unusual Robot" with our Turbot prototypes! Additional to that, a Solarbotics Sumovore ("Oops" by Kristina Miles) won the amateur mini-sumo category!
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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.