• Simple Gas Leak Detector Circuit

    Here is the gas leakage circuit uses the SEN-1327 gas sensor module. Its output goes high when the gas level reaches or exceeds certain point. Interfacing with the sensor module is done through a ...

  • Handy Talky 27 Mhz

    Handy Talky circuit has the advantage of this kind can double loudspeaker. On receipt, serves as a loudspeaker, and at the radiating function as a microphone. Transmitter section Handy Talky ...

  • simple Light Switch Triac

    The series of light switches this time a little differently in terms of its voltage. The series of  light switches can work directly on the AC power network. Light switches are using the main ...

  • Simple RFID Door Lock Circuit

    Instructables said "RFID was the best way to unlock my door, even with my hands full I can unlock the door and push it open! I built a simple circuit with a basic ATMega 168 arduino chip and a ...

  • Serial PIC16F84 Programmer Without Power

    I finally found universal window based software designed to work with any serial programmers for PIC16F84 written by Nigel Goodwin. Build this programmer before started experimenting the ...

  • Basic integer calculator AT89C51

    This sample displays a basic integer calculator powered by the 8051 microcontroller. Although Keil C51 has a  full floating point math library the evaluation version is restricted to 2k of object ...

  • Simple Serial AVR Programmer

    This simple AVR Programmer able to transfer hex programs to most ATMEL AVR microcontrollers. It is more reliable than most other simple AVR programmers available out there and can be built in ...

  • Digital Compass Module HMC6352

    The Honeywell HMC6352 is a fully integrated compassmodule that combines 2-axis magneto-resistive sensorswith the required analog and digital support circuits, andalgorithms for heading ...

  • FM Wireless Mike

    FM Wireless Mike...[more] :  low power frequency modulated transmitter using tw1o transistors. The circuit works with 9v power supply. ...

  • Square Wave to Sine Circuit

    Square Wave to Sine Circuit...[more] :  ...