The documentation and ease of use of Atmel peripherals, and the electrical robustness of the chips, is something I like. Don't need an ARM to blink some LEDs wh

The documentation and ease of use of Atmel peripherals, and the electrical robustness of the chips, is something I like. Don't need an ARM to blink some LEDs when a sensor triggers. For ARM, I like both the OpenCM 9.04 ($9 board) and teensy 3 ($19 board.) Both of them can take 100 mil headers and be breadboarded if needed.