We've been very fortunate to be offered a limited supply of the amazing Portescap MU915L gear motor. Sound familiar? They should - they're the motivators for the legendary "Walkman" by Mark Tilden. We don't have a huge number of these, so if you're interested, order soon! (Limit 5 per customer)
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
Special Gift Ocarina Box
Now that the season of mass gift giving is (temporarily) over, publishing the details on this special gift ocarina box for a wedding anniversary will not ruin a surprise. So I figured I'd share this personal project that uses simple but smart electronics. First I soldered an interrupter switch to the SuperFlex LED Strand with Battery Pack in color purple. […]
Freezer Burn 2017 Pendant
Freezer Burn is an Alberta Regional Burning Man celebration annually creating a temporary community out on the prairie. A few of us here at Solarbotics attend, and having access to all of the neat technology, we make an effort to bring special projects to the festival. Lit up projects work well since the event is […]
Holiday Hours and Shipping
This is a quick note to announce our holiday schedule, which is going to be as follows: December 24 (Christmas Eve)- 9am to 12pm (half day) December 25 (Christmas Day) - offices are closed December 26 (Boxing Day) - offices are closed December 31 (The Day Before New Year's Day) - 9am to 12pm (half […]
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.