1 Make your own Power Meter/Logger
A GreatScott! build recommended as a starting point for logging voltage, current and power with an INA219, and adapted by others for their own meters.
Topic
data logging
3 videos. Ranked by independent recommendations, not by views.
2 Tutorial 11 for Arduino: SD Cards and Datalogging
Recommended for learning to read and write SD cards on Arduino, especially logging CSV files with headings and an id per data point.
3 Arduino SD Card and Data Logging to Excel Tutorial
A tutorial on connecting an SD card module to Arduino, recommended to people who want to log readings to a file for later use on a computer.
