microcontroller Digital bargraph display driver circuit


Posted on Feb 7, 2014

For a project I need to display a progress bar of the activity performed by my MCU. For this purpose I am going to use a bargraph display, but the problem is that bargraph display driver driver IC LM3914 uses analog input where as MCU produces a digital output. How can I display a value on bargraph using digital input instead of analog The bargra


microcontroller Digital bargraph display driver circuit
Click here to download the full size of the above Circuit.

ph should display values from lower to higher and higher to lower. Schematics will be highly appreciated. I only have two data pins available on uC (PIC16F84a) to drive a Bargraph display, and IO expander will increase the cost of system. I tried IC 4017 for the purpose, but it provides only one ON pin at a time.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    DC accurate low-pass filter
    Hextor Hexapod Robot
    how to make vibration detectormeter
    lm1893 power line modem circuit
    High gain microphone preamplifier electronic project
    Multivibrator
    Pulsed Magnetic Field Therapy (PMFT) Circuit
    Tube amplifier input voltage input
    Face Recognition Attendance Machine interface circuit



    Top