Tuesday, January 31, 2012
Universal remote control receiverMonday, January 30, 2012
A robot for beginnersSunday, January 29, 2012
A proximity detectorSaturday, January 28, 2012
A detector of magnetic fieldsFriday, January 27, 2012
A variable speed DC motorThursday, January 26, 2012
A detector of cell phonesMost 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 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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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...
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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 automation photoresistor. thyristor feeds a dc voltage from 12 to 14 V. I realized this automation to s...
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diagram of the transmitter 1Circuit UM3750 UM86409 MM53200N 1Transistor ZTX321 ou MPSH10 2N2369A ou BSX20 ou BF494 ou BF254 7 Dio...
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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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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: Photograph of the transmitter. Figure 2: Photograph of the receiver. A number of readers, after completing the 4-cha...
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This receiver can operate in combination with 9-bit encoders or 12 bits. It can read and memorize the codes automatically, through a pr...