Wow! They're finally here! These are the original gear motors we used sooo many years ago to convert and power the Miniball kits (yes, they're under review for bringing back - don't rush us!). We're the only place to find the whole assortment of four gear ratios - 75.7, 134.5, 196.6, and 297.1:1 reduction, and […]
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
Christmas Bundles!
My marketing team has been throwing (ouch!) erasers at me (ouch!)until I get this put online: Not sure if you should build or read this winter season? Combine the two! Get the "Junkbots" book and a HexPummer, Pendulum, or SolarSpeeder kit at a combined price that saves you money! (See below in "Featured Items")
Project Monday: Musical Gears
Sometimes we get the opportunity to help out select people who are developing projects for a good cause. One of those things dear to our hearts is inspiring children with science and electronics. So when John Porter came to us looking for a hand to make a musical gear project as part of an exhibit […]
Another Junkbots review
We're pretty proud of our book, "Junkbots, Bugbots, and Bots on Wheels", especially with reviews like this!
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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.