Simple PIC voltmeter with LCD

This is very beginner project on how to read analog DC voltage with PIC and display it on LCD display developed by sprut.

pic_adc_lcd.gif

 

Voltage is read with 10 bit ADC input. Input is connected directly to RA0 pin so be careful with measured voltages. Higher than VCC voltages may damage PIC microcontroller. If you are not sure better connect protecting Schottky diodes on the input. ADC can measure with 4.8828125mV accuracy when VCC=5V. Download assembly source code if you want to experiment more. sprut also has more info on his site about electronics, PIC microcontrollers. Site is in German language, but any online translator can help.

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8 Comments

  1. I happen to visit your site regularly so you can say I am something similar to a fan. Keep up the good work.

  2. Please send me the project and program of the voltmeter.

    Fábio

    Brazil

  3. Please send me the information and program to make this voltmeter and the LED type to.

    Thank you,

    Alejandro

    Mexico

  4. Please send me a full detail on making this project.
    I am trying to build a programmable tester for my project.
    Regards,

  5. My input is 12V-24V so which circuit can I use for my design.

  6. Please send me the project and program of the voltmeter.

  7. Hi please send me the project and the program for the voltmeter
    Thanks.

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