Digital 0-30V Multimeter and Ohm-meter

So my final year project for electronics engineering diploma (2010), was to design and implement a digital multimeter using Atmel 8051 MCU+16×2 LCD and a development board that was supplied by the university.

Schematic Diagram for the external setup of the meter

Schematic

Schematic Diagram for the Development board(Open source)

cuicuit diag

Source code: written in Keil Uvision 3 (program has few bugs but works 100%)

http://linkshrink.net/70T3D9

 

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