Friday, February 10, 2012
A flashing LED "flash"Thursday, February 9, 2012
Reduce the voltage supply 230 VAC to a DC voltage transformerlessWednesday, February 8, 2012
Tester quartz up to 1 MHzTuesday, February 7, 2012
Automatism PhotoresistiveMonday, February 6, 2012
A three-tone ringerSunday, February 5, 2012
A seven segment display digital giantSaturday, February 4, 2012
An RX for HF anti burglar of pocketFriday, February 3, 2012
An TX for HF anti burglar of pocketThursday, February 2, 2012
An LED boardWednesday, February 1, 2012
An electronic candleTuesday, January 31, 2012
Universal remote control receiverMonday, January 30, 2012
A robot for beginnersSunday, January 29, 2012
A proximity detectorMost visited posts this week
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Capable of measuring ambient temperature of -50 ° to +150 ° C, it is not only suitable for home or office, but also for air-conditioned ro...
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This device is a generator based on the voice audio chip from Holtek HT8950, when talking into the microphone, the voice from the loudspeake...
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This device detects the approach and the displacement of persons or things within its range and is particularly appropriate to protect the...
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Figure 1: Diagram of LED electronic clock. If you have at your disposal in a bottom drawer of the few integrated circuits making up t...
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If you're a special lighting for your party or simply close your meal? A candle illuminates the interior decor without risking to b...
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Figure 1: Photograph of the transmitter. Figure 2: Photograph of the receiver. A number of readers, after completing the 4-cha...
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This mini transmitter is on a printed circuit of just 4 x 9 cm which take up a high sensitivity electret microphone and a camera CMOS u...
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In our last issue we promised you a description of a micro-UHF, companion of the micro-transmitter controlled by voice. It is this micro-r...
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Figure 1: Diagram of the circuit flash LED and components list. I had a high brightness LEDs, such as the one you use in assembling EN...
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How is it possible to power an LED with high brightness, the conduction voltage of 3 V with 1.5 V battery? That is what this article will te...