A 32-bit extension of the platform established by Arduino UNO, the Zero board (Figure 1 below) is powered by Atmel's SAMD21 MCU, which features a 32-bit ARM Cortex M0+ core. Figuire 1. The Arduino ...

The Arduino at Heart board is based on an ATMega328 microcontroller. Arduino Zero. Compared to Arduino at Heart, Atmel’s Arduino Zero is a more conventional developer board.

Arduino enthusiasts might be interested to know that Rapid Prototypes have this week launched their new second-generation Neutrino 2.0 development board which is Arduino Zero compatible.