This instructable describes a shield, which converts "Arduino" board in a digital multimeter (DMM).
The shield can be inserted on "Arduino" UNO und Duemilanove boards. It can work in three modes:
The second mode does not require the presence of LCM, what makes the shield very cheap.
The "Arduino" based DMM has the following functions:
The following movie shows how the "Arduino" based DMM works in comparison with non-professional standard DMM