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2 channel RF remote control
How many times you needed some remote control to handle some electric device ? Many times. There are lot of remote controls like infrared, RF, SMS (like my other circuit) and more. The basic small-range remote controls are 2, Infrared and RF (Radio Frequency). One of the weaks of Infrared is that the signal can not pass the walls.In keeping with the purest standards of junk craft, I refused to purchase anything for this project. But over time I was able to extract the following from my various hoards of trash:
Mini Van De Graaf... M & M style! - Instructables - DIY, How
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Many amateurs have stopped by their local Radio Shack store and have noticed the famous LM317T adjustable voltage regulator. But, did you know that all voltage regulators are adjustable? Yes, any IC voltage regulator can be adjusted to a higher voltage than its fixed voltage by just adding a couple of resistors. As an example, lets consider using the popular 7805 (5 volt) voltage regulator as a 12 volt regulator.
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Low speed AVR oscilloscope - The World's Biggest Show &
>> The firmware was updated on 19 Mar 2011 A few months ago a friend of mine -car mechanical at profession- told me that he had problem with some car sensors. He couldn't check, with a simple multimeter, if a sensor was working properly.Here's V2 of the Stirling engine. I built this one just for the movie. However, it's not very much different from the previous engine, only real differences being a hard drive platter for a flywheel, a larger displacer (probably harmful to the running, should be like said in the instructions) and painted posts for the crankshaft.
The Sterling Engine, absorb energy from candles, coffee, and mor
9-Volt Laser-----Easy,Cool, and FUN!!!!!!!!! - The World's
1) 2 9-volt battery 2)a mini pushbutton or a small on/off switch from Radio Shack 3)a 650nm 5mW 12x30mm brass case Laser Module from http://mfgcn.com/_wsn/page2.html 4)a hot glue gun 5)a metal cutter 6)a pincer pliers 7)some wires 8)a solder station or gun 9) some solder
Converting a computer ATX power supply to a really useful lab po
Computer power supplies cost around US$15,but lab power supplies can run you $100 or more! By converting the cheap (free) ATX power supplies that can be found in any discarded computer, you can get a phenomenal lab power supply with huge current outputs, short circuit protection, and very tight voltage regulation. In this instructable I will show you how to quickly convert one of those many computer power supplies into something that you can use to power your electronics projects, for electroplating, for electroetching, for heating wires for foam cutting, etc. The voltages that can be output by this unit are 24v (+12, -12), 17v (+5, -12), 12v (+12, 0), 10v (+5, -5), 7v (+12, +5), 5v (+5, 0) which should be sufficient for most electrical testing. Many ATX power supplies with a 24-pin connector for motherboards will not supply the -5V lead.
Evil Mad Scientist Laboratories - A Simple and Cheap Dark-Detect
Here are our components: On top: a CR2032 lithium coin cell (3 V). On the bottom (L-R): the LED, an LTR-4206E phototransistor, a 2N3904 transistor, and a 1 k resistor. This LED is red, blindingly bright at 60 candela, in a 10 mm package. It casts a visible beam , visible for about twenty feet in a well-lit room. We got the LEDs and batteries on eBay, and the other parts are from Digi-Key, but Mouser has them as well. As we mentioned, the last three cost about $0.30 all together, and much less in bulk.What is an oscilloscope, what can you do with it, and how does it work? For those Hacked Gadget makers who have had little experience in working with oscilloscopes and would like to learn more about them, check out these tutorial sites.
Hacked Gadgets - DIY Tech Blog » Blog Archive » Oscilloscope Tut
In order to make your El wire light up you will need a driver or sequencer of some sort to power it. No need to be afraid of these terms - the drivers and sequencers just delver power to the wire similar to how a power brick delivers power to your laptop. You can buy a driver or sequencer from the same place you get your EL wire. You will also need either a harness or some kind of connecting wires to attach the EL wire to the driver or sequencer.