Before we jump to the new product announcements, we need to tell you that we will be closed on Monday August 3rd (wait, what, it's already August?!) to celebrate something called a National One of the Many Long Weekends Day - I mean Heritage Day. We will resume our regular activities of answering phones 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
New Canadian Prices
I've got a note on my desk that says "Annouce that some Canadian Prices have changed". Uh...ok. I do what I'm told. Apparently, this has something to do with our Canadian dollar climbing like a rabid beaver.
New Construction Material!
We now sell Sintra, a lightweight, easy to work with material that comes in a variety of colors including white, red, blue and yellow. Check the link at: Sintra Sales page Sintra is easy to cut by scoring a line with a knife and then breaking it. Glue also works well bonding pieces of sintra […]
2003 LANL Workshop
We've got the official "OK" to open up registration for the 2003 LANL BEAM Workshop in Los Alamos, New Mexico. The 3-day workshop is from May 1-3, with the 1-day following on May 4. Check it out at any of the following links: Direct IP link (until the following DNS entries echo through the web) […]
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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.