Using STM32F429 microcontroller current, power consumpitons in low power modes is observed using USB multimeter and compared with current sensor. Stm32F429 has maximum operating frequency upto 180 MHz ...

Your MacBook isn’t charging right and you can’t figure it where the problem is? Plugable’s USBC-VAmeter3 can help. Connect it to the power cable running to your Mac, iPad or iPhone to see the voltage, ...

mode=DCV range=1 display=8.595 overload=False decimal=8.595 unit=V max=False min=False hold=False rel=False auto=True battery=False hvwarning=False dc=True peak_max ...

So a few months ago, I stumbled upon a thing at Adafruit.com called a "Charger Doctor" which was really just a Multimeter designed to slip inline with your USB cable. It was $7.50 and I liked it.

Model 2100 is a high-precision, 6½-digit DMM with 10-Vdc accuracy of 38 ppm at a measurement rate of 50 readings/sec at full resolution, and over 2,000 readings/sec at 4½-digit resolution. Aug. 9, ...