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

    • 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...
    • Light a LED with a 1.5V battery
      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...
    • 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 seven segment display digital giant
      This module display seven segment series giant to do everything you can (in combination with other platinum and a control) to set up tables ...
    • A detector of magnetic fields
      Figure 1: Diagram of the detector of magnetic material. If you approach an object's magnetic core of Ferroxcube choke L1, the LED li...
    • A three-tone ringer
      I have a small company whose premises consist of two long wings of the building and everything is served by three entries spread: Well ...
    • A radio system UHF Long Range
      We will present an economic system for remotely controlling any device, whether electrical or electronic. Its originality lies in its unus...
    • Micro Spy 88-108 MHz
      LIST OF COMPONENTS R1 = 15 kOhm R2 = 100 Kohm R3 = 100 ohms C1 = 100 nF milfeuil C2 = 220 pF ceramic C3 = 220 pF ceramic C4 = 2-22 ...
    • Transmitter Receiver 27 MHz amplitude modulation
      I) Presentation : The problem of signal transmission by audio frequency electromagnetic wave led in recent years of practical arrangem...
    • A variable speed DC motor
      With a PWM controller, this board allows very fine adjustment of the energy supplied (and thus the speed of rotation of the axis) to an...