I fairly new in this arduino hobby. I am developing an automatic pets feeder that will run on batteries. I've done researches on minimizing power consumption.
I've successfully done the coding to sleep the board and to detach a mini servo when sleeping. Now, it is time for me to actually read the power consumption draw of the board to really see how low the current can go.
For this I am using a multimeter to read the amp while the board is running. However I am not sure about the connection to place the multimeter.
I've seen this video and there is a diagram there on the placement of multimeter: Tutorial: Using Power Saving Sleep Modes on the Arduino - YouTube
The guide shows to supply regulated 5v power to 5v pin using a bench power supply that I do not have. I don't want to mess up with 5v or Vin pin.
How can I do this test by using USB power input via the USB jack OR with 4 AA battery into the power jack instead?
I am using UNO.