IRO Journals
Journal of Electronics and Informatics

E-Bike Motor Speed Controlling System using STM32 Microcontroller and PWM Feedback

Open Access
Published: 03 July, 2026
Pages: 235-245
  • Priyadarshini M.S. , Priyadarshini M.S.
    Department of Electrical and Electronics Engineering, K.S.R.M. College of Engineering (Autonomous), Kadapa, India
    Department of Electrical and Electronics Engineering, K.S.R.M. College of Engineering (Autonomous), Kadapa, India
  • Bhaskara Reddy M. , Bhaskara Reddy M.
    Department of Electrical and Electronics Engineering, K.S.R.M. College of Engineering (Autonomous), Kadapa, India
    Department of Electrical and Electronics Engineering, K.S.R.M. College of Engineering (Autonomous), Kadapa, India
  • Bhavana Sree Y. , Bhavana Sree Y.
    Department of Electrical and Electronics Engineering, K.S.R.M. College of Engineering (Autonomous), Kadapa, India
    Department of Electrical and Electronics Engineering, K.S.R.M. College of Engineering (Autonomous), Kadapa, India
  • Vijay Kumar K. , Vijay Kumar K.
    Department of Electrical and Electronics Engineering, K.S.R.M. College of Engineering (Autonomous), Kadapa, India
    Department of Electrical and Electronics Engineering, K.S.R.M. College of Engineering (Autonomous), Kadapa, India
  • Madduri Charitha , Madduri Charitha
    Department of Electrical and Electronics Engineering, K.S.R.M. College of Engineering (Autonomous), Kadapa, India
    Department of Electrical and Electronics Engineering, K.S.R.M. College of Engineering (Autonomous), Kadapa, India
  • Sreenivasula Reddy K. , Sreenivasula Reddy K.
    Department of Electrical and Electronics Engineering, K.S.R.M. College of Engineering (Autonomous), Kadapa, India
    Department of Electrical and Electronics Engineering, K.S.R.M. College of Engineering (Autonomous), Kadapa, India
  • Shaik Baba Faruk Shaik Baba Faruk
    Department of Electrical and Electronics Engineering, K.S.R.M. College of Engineering (Autonomous), Kadapa, India
    Department of Electrical and Electronics Engineering, K.S.R.M. College of Engineering (Autonomous), Kadapa, India
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How to Cite

M.S., Priyadarshini, Bhaskara Reddy M., Bhavana Sree Y., Vijay Kumar K., Madduri Charitha, Sreenivasula Reddy K., and Shaik Baba Faruk. 2026. “E-Bike Motor Speed Controlling System Using STM32 Microcontroller and PWM Feedback”. Journal of Electronics and Informatics 8 (3): 235-45. https://doi.org/10.36548/jei.2026.3.003.
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Keywords

STM32
BLDC Motor
PWM Control
OLED Display
Motor Driver
Hall Effect Sensor

Abstract

This paper describes the design and development of an affordable motor speed control for e-bike systems based on the STM32F103C8T6 microcontroller and PWM feedback method. An analog Hall effect throttle is utilized in this design for generating a speed control signal. The speed of a brushless DC (BLDC) motor is controlled through the PWM generated with the help of the microcontroller. Real-time speed feedback is provided with the help of the Hall-effect sensor installed on the motor. The feedback speed is shown on the SSD1306 OLED display using the I²C communication interface. The design includes the IRF540N MOSFET motor driver circuit and the 7805/AMS1117 powered regulated power supply circuits. The embedded firmware programmed in the STM32CubeIDE acquires the throttle signal, generates PWM signal, calculates speed, and displays it on the OLED screen. Testing of the developed controller was performed experimentally in the form of hardware testing, speed calibration, and waveforms analysis. The maximum speed achieved during testing is about 3000 RPM along with stable PWM operation at 10 kHz and efficiency of 83.3%.

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