Small ARM Cortex M4 board for wearable, data logger or other projects. Board is able to program and debug other ARM Cortex devices too. The board is based on a Freescale Kinetis K20 device (ARM Cortex-M4 running at 50 MHz). The microcontroller pins are on the outside to use the board with a breadboard. The board includes the option for an micro SD card, 32 kHz clock and a 3.3V DC-DC converter. The ARM Cortex can be debugged with standard development tools (Eclipse, GNU, SWD).
“Im using the tiny and inexpensive Nordic Semiconductor nRF24L01+ transceiver (see Tutorial: Nordic Semiconductor nRF24L01+ with the Freescale FRDM-K64F Board) in many projects: it costs less than $3 and allows me to communicate with a proprietary 2.4GHz protocol …