The build is based around an Arduino so that it is easy for others to replicate, and is housed in a waterproof box with a large battery, and includes data logging to an SD card in order to make it ...

An SD card, short for Secure Digital card, is a type of removable memory card used to read and write large quantities of data in a wide variety of mobile electronics, cameras, smart devices, and more.

The fully custom EEVblog Electronics Multimeter designed by David Jones and UEI, with many exclusive features like SD card logging and Bluetooth connectivity.