Please be advised that Solarbotics will be closed this Friday, March the 25th. We will resume operations Monday, March 28th so any Express Orders that come in after 2:00pm this Thursday will not go out until Monday, March 28. Take it easy on the chocolate!
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
Wednesday Links: Robot Light Painting, M...
Masking tape and storytelling! Calcium pills and Scandinavian gods! Stop signs and distant relatives. None of the above mentioned things are going to be featured in this post, although they are extremely noteworthy. But all the things in the universe are interconnected, so there's still a chance that this stuff will make sense for someone. […]
We are at the Maker Faire!
Solarbotics and HVW Tech will be at the Bay Area Maker Faire this weekend! If you have a chance to come out be sure to stop by and say hi, we'll be in our booth all day Saturday and Sunday. Also Dave will be doing a presentation in the workshop area over the weekend, so […]
Solarbotics Closed Monday (Thanksgiving)
Like the polite Canadians we are, we like giving thanks for various reasons or no reasons at all. So on Monday October 14 we will be giving the above mentioned thanks all day at our corresponding home bases, and therefore our office will be closed for the day. The website, however will remain open. Phone […]
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.