Abstract: The “E-Bike speed controller system by stm32” is of large scope project designed to make protection and speed control operations. The system engages the services of sensors and motors to perform the parameters such as speed control and battery protection. Firstly, a battery is 8.4 volts is turned on, but the system works on 5v, so a bug converter is used to distribute the correct amount of voltage. When the motor starts the user accelerates to high speed and suddenly the E-bike crashes the motor wheel stops rotating then this system knows stall detected and stops the flow of current from the battery to the motor. If the E-bike in high speed and we keep on applying the load the system knows overload is detected, it stops the rotation of the motor and cuts the power supply from the battery to the motor. Overall, this system approaches protection and speed control by using sensors and MOSFET to create a secure environment.

Keywords: STM32 Microcontroller, Buck Converter, MOSFET, LCE display, I2c Module, Current Sensor, Motor, Battery.

| DOI: 10.17148/IARJSET.2024.11562