Every year a group of my friends have an engineering Secret Santa. The rules are simple: make something cool for under $20 that requires engineering to complete. In years past we’ve seen Google cardboard VR headsets that are 6DOF, match stick rockets, 3D printed fans that explode when used, 3D printed rockets with cardboard launch […]
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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Solarbotics at MakerFaire YYC
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Individually mounted WS2812B LED - Black or White $1.62 Super-tightly PCB-mounted WS2812B addressable LEDs, available in white or black trim. SuperFlex Wire 6M on Bobbin $5.85 This 6M bobbin of 26AWG Superflex wire is a soft and supple, ideal for wearable technology. Superflex 4.5m 90 LED Strand, 5cm Spacing $6.28 90 tiny LEDs of various […]
It's USUALLY good to be Canadian...
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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.