Well, it's the end of the year apparently. 2011 has kinda withered up and died like some kinda... Food thing that tends to dry up if you leave it out for too long. Like jerky. Or raisins. Mm, especially raisins when they're in oatmeal cookies (shh, don't tell the boss. Anything but a strict 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)
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Lead-free Solder Spool (100g) $9.55 Solder, without lead! Adapter, 9VDC @ 1A $6.79 This Adapter, 9V @ 1A is a economical power transformer. Grove - Universal 4 Pin 20cm Unbuckled Cable (5 PCs Pack) $3.78 Extra cables for Grove modules. Seeed Grove - 3-Axis Digital Accelerometer $35.75 The H3LIS331DL is a low power high performance […]
Canada Day Holiday
Solarbotics will be closed for the July 1st Canada Day celebrations. We gotta let our people have fun some of the time...
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