Multiple wireless sensing triple-axis reference design The ZSTAR3 system accommodates multiple analog and digital accelerometer boards, connected through an RF ZigBee® 2.4 GHz communication to a single USB node connected to a PC. The accelerometer boards measure acceleration in three axes using a pin compatible digital or, optionally, an analog sensor. The sensor sensitivity is defined by the selected accelerometer. The USB node is part of the ZSTAR design, equipped with dedicated software supporting multiple nodes. The ZSTAR3 project offers a new PC software interface that shows all the basic accelerometer functions and utilizations. Freescale’s RD3172MMA7456L ZSTAR3 can help you streamline your solution with the convenience of motion and wireless control. The ZSTAR3 is a small portable board design that utilizes the following products: MMA7361L analog or MMA7456L digital triple-axis accelerometer..