Motion Detector with PIR Sensor

Posted on Feb 4, 2014

this project use PIC18F25K20 microcontroller to detect if the sensor change state and it will emit a sound from the speaker or piezo, the MCU also detect the voltage of the battery in the startup, the algorithm it s very simple use an interrupt on change to detect the change on the PIR sensor. Power On - when circuit start, a delay come to MCU ge

Motion Detector with PIR Sensor
Click here to download the full size of the above Circuit.

nerate a unknowed state, to avoid circuit malfunction, R6 and C1 make a RC delay filter, calculate delay with:

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    Intruder Alarm
    Bandpass filter
    Continuity Tester
    Custom Silicon Solutions
    ultrasonic transmitter circuit
    rotating flashing 230v lights
    Pulse Frequency Modulator
    FM transmitter circuit diagram
    555 circuit for 8 leds flashing
    AC power without power transistor switching circuit
    Double transistor low noise of the preamplifier measured by high