Qiaozhi Wang, P.E.
(Prounouced "Chi-ao-Jhi")
Results-driven Professional Engineer specializing in mechatronics, systems integration, and autonomous systems. Demonstrated expertise leading end-to-end development of complex electro-mechanical systems — from concept design through prototype build, validation, and public debut.

RF Remote-Controlled Car with Load Cells
Keywords: Arduino, RF Transceivers Pair, 3D Printing, Circuit Design, Assembly
This project aims to remotely control a model cart by measuring the grip force of user’s hand. In a real case scenario, this system could be used to help people pulling/pushing a heavy loaded cart, making it easier to move and turn.
Demo Video
The system has a host (controller) and a client (cart). The controller side consists of two load cells detecting the user’s grip force separately. These two readings are sent to the cart side with a radio frequency (RF) transmitter. Once the signals are received by the RF receiver on the cart side, the speed of left and right driving wheel of the cart will change corresponding to the value of two load cell readings.
Photo of the apparatus
