I created this choker as a project to demonstrate the new MicroNova APA102-2020 LED strips. Photo by Yeti, edited by Batgirl These addressable LEDs are extremely small, less than 1/4 the size of a standard 5050 LED. This project was built using engineering sample standard MicroNova 99 LED / meter strips . The MicroNova strips we […]
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
Solar Pendulum of DOOOM blogged on MAKE
I love MAKE magazine. I always enjoy reading (then trying) the projects in each magazine. I was a bit disappointed in their last issue where they didn't cover the complete process to make gunpowder, but that's a minor complaint. I just noticed on their blog that they're talking about our Solar Pendulum kit and Christopher […]
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.
Remembrance Day
Solarbotics is closed for Remembrance day, to honour the memory of all those who fought in order to preserve our freedoms. Take the minute, and honour your war dead.
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.