Woo, we've had a busy week! To start things off, we have a new category - Temperature Sensors! So far it has the following items: Humidity/Temperature Sensor DS1620+ Serial Digital Thermometer DS18B20+ Temperature Sensor Devantech TPA81 8x1 Thermopile LilyPad Temperature Sensor Yeah, it's a pretty bare category at the moment, but we'll be adding to […]
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
LMR Start Here Kit, Beetlebot Preorders
Good news! Despite a few small setbacks and stumbling blocks, we've survived both the office move and Maker Faire! (I was going to say that at least nothing burned down, but that isn't exactly the case...). But now that things are settling back to normal, we'll be doing our best to bring you more awesome […]
Everything's Under Control. Situation No...
You might be wondering what the heck happened with our site this morning. Our response would be, as the one and only Han Solo once said, "Uh, we had a slight weapons malfunction, but uh... everything's perfectly all right now. We're fine. We're all fine here now, thank you. How are you?" This morning we […]
Friday New Product: Motor Brackets, Mini...
And again, after a little bit of a (long) break, we're back with the new exciting things. This time we brought in some tiny motor brackets, a Minishield from Didel and a uM-FPU64 Breakout Board Kit. GM23 Motor Brackets & 18mm Wheels $13.52 The microbot revolution has arrived! These brackets and 32mm wheels are much […]
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.