The Pololu serial 8-servo controller allows you to control up to eight RC servos with almost any robot controller or computer. Connect multiple units to the same serial line to control up to 128 servos independently.
Beacons are mounted on walls or ceilings to measure distance to other beacons and “hedgehog” using ultrasonic pulses. They communicate with router wirelessly in ISM band. Powered by LiPo battery or USB. Indoor Positioning System (IPS)