Forbes Advisor’s weekly credit card rates report indicates that the current average credit card interest rate is 25.37%. The Federal Reserve also tracks U.S. consumers' average credit card ...

SD card datalogging for up to four years is now possible, a RTC now provides precise time stamps on all data collected, and a few simple calculations on the microcontroller enable power factor ...

Companion library for Adafruit_GFX to load images from SD card or SPI Flash Requires Adafruit_GFX library and one of the SPI color graphic display libraries, e.g. Adafruit_ILI9341.

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