====== Single Chip MicroMote (SCμM) ====== See [[http://www.crystalfree.org]] The Single Chip MicroMote (SCμM for short) is a custom 2x3mm chip with crystal-free radio and ARM Cortex M0 microcontroller capable of full wireless communication (802.15.4 and Bluetooth) with only power, ground, and antenna connections, designed to be a compact microrobot control system or wireless sensor network node. An IR photodiode enables optical programming and HTC Vive Lighthouse-based position sensing with centimeter-scale accuracy in an indoor environment while an ADC and tens of GPIO pins are available for sensors and actuators.