Well, it certainly has been a busy week! Particularly for our pals over at SparkFun, who just wrapped up their third annual Free Day. This is quickly becoming a favourite spectator sport around the office, as every year we tune in to watch the available money evaporate and/or their website/servers die a horrible, horrible death. […]
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
Solarbotics at the ECRG
Well, somebody from Solarbotics will be at the Eastern Canadian Robot Games, namely Dave Hrynkiw, and Grant McKee. If you're going to be out in the Toronto region this weekend (October 26 and 27), come by and see the games at the Ontario Science Center!
Contest Results, Fresh Wireless Items
So as we mentioned last week, our contest to name our upcoming GVS Ardweeny Backpack had come to a close. We've had a chance to sift through all the submissions, and the results are IN. This would be the part where someone hands someone else a secret-lookin' envelope, but because I can't spot any envelopes […]
Solarbotics at Calgary Expo Holiday Mark...
If you are in Calgary & area this weekend, come see us at BMO Centre Expo Holiday Market. On November 25 & 26, 2017 we are going to be at booth 1314 with our new and all-time favorite gadgets. The hours of the show are: Saturday 10-6, Sunday 10-5.
Solarbotics has been operating for more than 25 years, bringing electronics know-how and supplies to both the electronics professional and hobbyist. We'll be happy to help you too!
Solarbotics, Ltd. is not responsible for misprints or errors on product prices or information. For more information, please see our Terms and Conditions.
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.