Tuesday, January 31, 2012

  • Universal remote control receiver

    Monday, January 30, 2012

  • A robot for beginners

    Sunday, January 29, 2012

  • A proximity detector

    Saturday, January 28, 2012

  • A detector of magnetic fields

    Friday, January 27, 2012

  • A variable speed DC motor

    Thursday, January 26, 2012

  • A detector of cell phones

    Most visited posts this week

    • Thermometer -50 to +150 ° C Wheatstone bridge
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    • An LED board
      This LED board displays a maximum of 46 characters scrolling speed is easily adjustable using buttons. It operates independently and all ope...
    • 4-CHANNEL TRANSCEIVER 433.92 MHz encoder
      diagram of the transmitter 1Circuit UM3750 UM86409 MM53200N 1Transistor ZTX321 ou MPSH10 2N2369A ou BSX20 ou BF494 ou BF254 7 Dio...
    • A flashing LED "flash"
      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...
    • A microphonic switch (vox)
      As you can see, this is a simple switch allows microphone to excite a relay with a whistle or a clap. If, through the inverter S1, connects...
    • A micro-receiver UHF
      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...