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

September 15, 2011
Magbot Pendulum, New SparkFun Items

Psst. Hey, you. We're about to show you Something Cool, and then we're going to show you some New Stuff. But, as it turns out, we're running rather low on Something Cools. This is where you come in - send us your projects! Seriously, we absolutely love to see what everyone uses our parts for […]

February 19, 2002
BEP Documentation Correction... part 2!

Thanks to an observant BEP user, a schematic inconsistancy in the IMx (Inverting Multiplexor) module was discovered, located, and eradicated. If you're interested in keeping your BEP documentation totally updated, get a fresh copy of it from here.

October 18, 2013
New Product Friday: GSM Shield, Conducti...

Well today we are presenting things! Here's how they work. GSM shield comes supplied with a sticker that you can draw a little arrow on it, and then you mount the shield on a stick, and it will show the direction of where you have to go. To set the direction whisper your exact latitude […]

October 16, 2002
Junkbots available!

We're proud to announce that we just got our shipment of 'Junkbots, Bugbots, and Bots on Wheels' tonight! The first 100 books will come signed by Dave Hrynkiw, and come with a free GM2 or GM3 gearmotor!

Solarbotics Ltd Logo
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.

cart