Last summer during a Solarbotics Robotics for Educators session, one of the teachers noted something about many of the mainstream robotics and electronics learning platforms commonly used in classrooms. He said that those platforms suffered from the Black Box Effect. This effect was where the “black boxes,” the controllers, were plugged into the computer and […]
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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Tah-DAAAA! Welcome to the new digs!
...And by "digs" I mean website! Thanks to all of you who've dropped in for a looky-loo while the paint dries. We're still (metaphorically) moving the furniture in, but everything is ready to roll. Stay tuned while we finish tweaking and installing new content! Thanks, Dave
Parallax S2 Scribblers in stock
The new S2 Scribblers from Parallax are in, and they feature a couple of cool new features. First: They're Open-Source! Yup, they've opened up all the design files to make hacking oh-so-much easier! Secondly, it's using the Parallax Propeller chip now, for mucho-improved computational power. They're already out of stock at Parallax, so get them […]
Herbie Reviewed
Here's a link from Gareth Branwyn at Streettech for his review of our new Herbie the Mousebot Kit!
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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.