NerdKits - electronics education for a digital generation

You are not logged in. [log in]

NEW: Learning electronics? Ask your questions on the new Electronics Questions & Answers site hosted by CircuitLab.

Project Help and Ideas » WattMeter (Volt x Amp)

March 02, 2012
by serkanozkan
serkanozkan's Avatar


Do you have any idea how Volt, Amp and (V*A=W)Watt Could be measured a Motor while driven controlled by our MCU?

I found some Current sensors just like temperature sensors. But For Voltage measuring I could not find something like that. Is there any one has better idea?

B. Regards Serkan

March 02, 2012
by nismotony
nismotony's Avatar

If it is a DC voltage motor: Use a current shunt and measure the voltage across it using an opamp instrumentation preamp. This will be your current to voltage converter. Plug that into a ADC.

Post a Reply

Please log in to post a reply.

Did you know that you can build a circuit to convert the "dit" and "dah" of Morse code back into letters automatically? Learn more...