Cool Summer Free Article of the week: 16-bit Data Logger
To make accurate voltages measurements you need an A/D converter (ADC) chip which has good resolution. The folks at Elektor Labs have developed a board containing a four-channel 16-bit ADC. It’s no coincidence the board uses a Gnublin/EEC connector which makes it compatible with the Elektor’s Linux board, Xmega Webserver and the new Extension shield for Arduino. A universal C library is included to make integration a walk in the park.