Sorry about the delay in making these available. These tiny 25:1 pager-sized gear motors are difficult to get built. BUT, we finally have more GM15 gearmotors in stock!
Circuit: Lightstorm
Dave Hrynkiw
July 12, 2007
(PDF Version) GIF Link
Some of you may have found the LightStorm Pummers that Mark Tilden has made using some neat looking plastics. We've built our own variation of the circuit, which is a dark-activated, quad-bicore pseudo-random chaos generated, dual pummer circuit.
Parts required are:
Dark Turn on Circuit
- Solarcell (SB Part SC2433)
- 1F 2.5V (SB Part CP1.0F) capacitor
- 1 Germanium Diode (SB Part D2)
- 100k Trimpot (SB Part RT100k)
- 2n3904 transistor (SB Part TR3904)
- 2n3906 transistor (SB Part TR3906)
Pummer Circuit
- 74HCT240 (SB Part 74HCT240)
- 2 x 1000uF Capacitor (SB Part CP1000)
- 2 x UltraBright LEDs (SB Part UBLED-R)
- 2 x 100k Resistors (SB Part 100k)
- 2 x 22uF Capacitors (SB Part CP22)
- 4 x 0.22uF Capacitors (SB Part CP0.22uF)
- 2 x 2 MegaOhm Resistors (SB Part R2.0M)
Pummer Circuit
- 74HCT240 (SB Part 74HCT240)
- 8 x 2n3904 Transistors (SB Part TR3904)
- 8 x CP0.22µF Capacitors (SB Part CP0.22uF)
- 8 x 1k Resistors (SB Part R1k)
- 2.2 MegaOhm Resistor (SB Part R2.2M)
- 3 MegaOhm Resistor (SB Part R3M)
- 3.3 MegaOhm Resistor (SB Part R3.3M)
- 4.3 MegaOhm Resistor (SB Part R4.3M)
MORE POSTS
GM2/3 Wheels!
WooHOO! We managed to get large, grippy wheels made for our GM2 & GM3 series of gearmotors! If you're familiar with the Parallax / MarkIII style Minisumo, these wheels might look familiar. The critical difference is that these wheels are keyed to fit the double-flat of our own gearmotors! We're presently stocking the black and […]
SparkFun hates robots.
We love SparkFun. Great group of people. Excellent products. It's just that they're... well... twisted and cruel. You see their RoboJoust event? We didn't take them serious when they said it was to be performed 4' off a concrete floor. But here's the proof. They're actually building the table that high off the ground. Next […]
Bicore Experimenter's PCB/Bundles
Sorry for the delay in announcements, folks! Been quite busy getting these latest devices ready for sale. The latest addition to the Solarbotics family of products is the Bicore Experimenter's PCB (aka:) BEP. This is a collection of useful, proven circuits that have been used by Solarbotics, and many other users of Mark Tilden's Bicore […]
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.