Rajnist:
Hello all!
I aim to make a multimeter using Arduino which would measure voltages as high as 100V and as low as 1~0.005V.
How should I start ? What are the hardwares required ??... please help
Thanks
First create a multimeter using an Arduino to measure voltages between 0V and 5V. Then come back and we'll advise you on how to accomplish the range you're looking for.
(There are loads of projects on the web using an Arduino to measure 0-5V.)