Wireless within a certain area with a control circuit for controlling the speed of DC Motor. Work, should I use to reach my goal I began to identify materials. These materials AT89S52 microcontroller, our independent auditor by the company... Electronics Projects, AT89S52 8051 RF DC Motor Speed Control "8051 example, avr project, keil example, microcontroller projects, pwm circuits, " Date 2019/08/01