I’ve recently bought a Raspberry Pi 3 Model A+ and wanted to know how much current it was drawing for a small project I’m working on. Looking around on the internet there are quite a few different types but none in particular stood out.
I eventually settled on the COWOO USB Tester. It had all the functions I was looking for – voltage, current, power – and was also QuickCharge 3.0 compatible which was an added bonus.
The ‘Key’ button on the device allows you to change the format of the display. Plugging it into my phone for a quick test and everything seems to be working nicely.
I’m not sure how accurate the device is but I’m just looking for indicative results. I may do a later post on that.