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

    Low Power LED Battery Voltmeter
    Diode Radio For Low Impedance Headphones
    DIY Fisher 800b into a mic pre
    Ohms Law
    Building a PIC18F USB device
    Electronic Watchdog
    Inductive radio alarm circuit



    Top