ESP8266 ESP-32 CAD 13.50/ USD 9.99 The much anticipated ESP32 is here!! Bluetooth, Wifi, Dual Core, IoT just became doable! ESP-12F AP+STA Remote Serial Port WIFI Controller / Module CAD9.38/USD6.95 You can't turn over an internet-connected rock without finding an ESP8266 of some sort wired to it. This ESP-12F AP+STA is a solid way 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
Robolympics coming up...
The Robolympics are coming up. Interesting list of events, and last year's was quite a blast... Just so you know!
A Sensory Bonanza
Sensors. They're FUN. So fun, in fact, we just added a metric crap-tonne (a completely legitimate scientific unit of measurement) of them to Solarbotics. What, you don't believe me? CHECK THIS ACTION OUT! We just added 4 categories, and we now have a total of 75 items available. Here's the full rundown of new stuff: […]
Yahoo BEAM list down?
We're having problems pinging the Yahoo BEAM list. With 800+ members, it's been the core way we've all be discussing things BEAM, so we're preparing for the worst. We're accelerating our deployment of a list replacement / backup / archive under solarbotics.net. We'll be attempting to send subscription invitation emails to members who posted messages […]
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.