They mention the Power Profiler Kit 2 (PPK2) to measure power usage. I've been using it for a few months with microcontrollers and have found it very useful. Th

They mention the Power Profiler Kit 2 (PPK2) to measure power usage. I've been using it for a few months with microcontrollers and have found it very useful. The amount of precision it's capable of with high-frequency measurements is extraordinary, I was able to spot when the MCU was running various functions just from the power draw. It goes down to 200nA and can produce 100,000 samples/sec. Alternatives like USB power meters[2] are still useful and can be cheap, but you don't get raw data from them and just have to read the value from the display. For comparison DigiKey has the PPK2 listed for $92.50. [1] https://www.nordicsemi.com/Products/Development-hardware/Power-Profiler-Kit-2 https://www.nordicsemi.com/Products/Development-hardware/Pow... [2] https://amazon.com/s?k=usb+power+meter https://amazon.com/s?k=usb+power+meter