So apparently Monday here in Albertaland is "Heritage Day". Which, quite frankly, sounds rather uninspiring. Don't get me wrong - any excuse for a statutory holiday is a good one. But the name seems rather vague and underwhelming. And thus I began my quest to find the true meaning of Heritage Day. So as any […]
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
BEP Documentation Correction...
Just a quick note for those of you who have been trying to build the SC1 Servocores with the 0.01uF capacitors as listed in the parts list. That's an error! 0.1uF is just fine. Documentation has been revised accordingly. Sorry for the error!
Why no new blogs? Huh? HUH?!?
Sorry. It's been a feverish last 9 months since taking the bull by the horns and taking over development of the NEW Solarbotics website. It's coming along, and will be ready VERY soon. Because of this, we've been concentrating on moving and vetting the new content, which is sort of like new content (but not […]
Happy Halloween!
You know how I said we'd have new and exciting stuff to show off this week? That isn't quite the case. It's just been one of those weeks, and we don't have anything ready to go for you. But I can say this - we'll be opening up pre-orders for our brand spankin' new Oomlout […]
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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.