Woohoo! We're thrilled to announce that Solarbotics is the exclusive importer for these Mark Tilden-designed gearmotors. 224:1 ratio, lots of torque, modifiable - these are idea for high-torque applications like walkers and turbots. Check the "New Items" listing on the left side for details, or view them directly here: GM2 (offset) or GM3 (90 degree) […]
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
New Website Migration update
We've finally migrated our new site from the internal development platform to the host's development platform! What's that mean to you? After we reconfigure some settings and run a gauntlet of tests, we should be live in days/weeks, not weeks/months! Thank you for your patience. We'll make it worthwhile.
ScoutWalker III back in stock!
There's still time to get your Solarbotics order in time for Christmas if you select courier shipping (maybe even just airmail, if you get the order in today and you live closeby). We now have a solid inventory of ScoutWalker III kits in stock, so if you want to have one from "Santa" this year, […]
Teach the Teacher: Arduino Boot Camp
Join our workshop on August 9th or 29th to learn the basics of how to make Arduinos work and how to teach CTF, CTS, and cross-curricular Project Based Learning using this fantastic resource. Sessions schedule: 10:00AM-12:00PM - Arduino programming with the Grove Educational Kit 1:00PM-3:00PM - Arduino Electronics with the ARDX Electronics Kit Location: Active […]
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.