Ok, ok - we've been getting requests (no; more like demands) that we offer a bit of a deal for getting the GM15's in pairs. Alright then. How does $30USD or $40Cdn a pair strike you? Ok, now let's see some nano-sumo robots! "Wot's this? A microcontroller at Solarbotics??" Yup. The Atmel ATMega8L is part […]
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
Pushpin Update
We've been getting many requests for additional inventory of our popular Push Pogo Pins. Well, we've ordered a batch, and we'll post an update when they're finally in. Sorry, no better ETA than that!
Heartbleed & Solarbotics
As I imagine most of you out there have heard by now, there's a pretty serious vulnerability in the OpenSSL that was announced on April 7th called CVE-2014-0160, better known as Heartbleed. For those of you wondering what the heck this "Heartbleed" thing is, awhile back OpenSSL added a "heartbeat" feature which allowed servers and […]
New Product: LED Strips
A brilliant selection of new smart LED strips with various features. They are addressable, white RGB, or full-color RGBW, available on spools or per meter to add blindingly bright effects to your project. Some so bright, we had to shoot them at 1/4 power to avoid freaking out the camera exposure. 5V RGB Addressable Serpentine […]
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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.