Well, I'm officially out of words, and again reverting to non-verbal expression. I already tried to interpretively dance the new product post before. That leaves me completely out of options here. So how about I sleep interpretively? Or breathe... Now, that's just plain weird. Better I sleepwalk then: 4-conductor, 20AWG ribbon cable (Blue, Green, Yellow, […]
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)
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Wednesday Cool Links: Instructables and ...
This week, we're kinda bored. The New Year has been ushered in, but now it's starting to feel so... old. Almost like the same 'New Year' thing happens every 12 months or something. So instead of just your normal smattering of links, this week we want to include something to make it a little bit […]
Free Mark Tilden Lecture at UWO
Remember that time when I was all like "This is totally the last post for the summer"? Well, I was just foolin'. Oh, those whimsical summer musings. No, instead we have another post for you. Today. Right now, in fact. This very post, even. It'll go something like this: Are near to London, Ontario? Do […]
More new stuff... SC3782!
Cool! We've found some SC3782 (37x82 mm) solar cells! Since Panasonic ain't making these anymore, and there aren't many of these left, you'll only find them here at Solarbotics until they're all sold out. Get'em while they're hot!
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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.