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

    LED Ultraviolet exposure box
    Power supply for 25-watt arc lamp
    Electronic theremin
    Z-80 Bus Monitor/Debugger
    board anticipation equivalent diagram
    Digital Bike Tachometer Circuit Schematic Diagram
    analog to digital converter adc0804
    converter voltmeter to frequency meter
    7812 ic 12 volt 30 amp psu circuit electronic circuit schematic
    water liquid level sensor relay switch
    TDA8571J car audio amplifier electronic project circuit design
    Smoke Detector circuit diagram using SD2 IC
    12V Flourescent Lamp Inverter
    Allarm antifurto
    Computer Circuit
    Vegetable greenhouse temperature detection control circuit
    Ratio discriminator circuit