Display Voltage and wattage

Hey All,

I'm trying to create the same display as the youtube video attached below.

I know arduino can display Voltage and Amps. My question is how to display wattage?

I would be dealing with DC power instead of AC power if that matters.

I was thinking of using Non-Invasive Current Sensor to read wattage.

OFC vs CCA Cable

Thanks,

Steve

I know arduino can display Voltage and Amps. My question is how to display wattage?

Power (Watts) is calculated as Voltage x Current.

If resistance is constant you can use Voltage Squared / Resistance.

This Adafruit breakout board measures voltage and current with 12bit resolution.
AFAIK, the INA219 chip used also calculates power.
I don't know if that is implemented in the Adafruit library...
Leo..

P.S. That youtube video is BS.
The are comparing apples with oranges. Copper wire with aluminium wire.
If they had compared the expensive oxygen free copper wire with standard copper wire of the same thickness, the results would have been the same.