After 5 years of employment with Solarbotics Ltd., Grant McKee has submitted his letter of resignation to Solarbotics, effective August 16th 2005. Mr. McKee has been an invaluable resource at Solarbotics, but is off to hunker down and gather resources before making the leap to further advance his education. Although he will be greatly missed, […]
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
Canada Post Web Services Update
In regards to the Canada Post Services interruption we posted about earlier: Canada Post has withdrawn its 72-hour notice of service interruption, which was to take effect Monday, July 11. Mail and parcels will be delivered as usual and mail service will continue without interruption. Canada Post shipping option is again available in the checkout […]
Canada Post Service Interruption
Canada Post orders will not be shipping today due to the issues with some of their online tools. We apologize for inconvenience.
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 […]
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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.