International Journal of Advances in Applied Sciences (IJAAS) Vol. 12, No. 4, December 2023, pp. 350~360 ISSN: 2252-8814, DOI: 10.11591/ijaas.v12.i4.pp350-360  350 Journal homepage: http://ijaas.iaescore.com Development of a microcontroller and resistive touchscreen- based speed monitoring and control system for DC motor Oluwaseun Ibrahim Adebisi 1 , Ayoade Benson Ogundare 2 , Tolulope Christiana Erinosho 1 , Moyosoluwalorun Odunayo Sonola 1 , Adesewa Rofiat Adesanu 1 1 Department of Electrical and Electronics Engineering, Federal University of Agriculture, Abeokuta, Nigeria, 2 Department of Electrical and Electronics Engineering, Lagos State University of Science and Technology, Ikorodu, Nigeria Article Info ABSTRACT Article history: Received Jul 9, 2023 Revised Aug 5, 2023 Accepted Sep 14, 2023 Speed control is a key requirement in direct current (DC) motor applications where accuracy, reliability, flexibility, and safety are of high importance. In this study, a microcontroller and resistive touchscreen-based DC motor speed monitoring and control system were developed. The core components employed in the development of the system include Arduino ATMega328P microcontroller, thin film technology (TFT) resistive touch screen, L293D motor driver, and infrared (IR) sensor module. ATMega328P microcontroller is the brain of the system around which the overall circuit design was modeled. TFT resistive touch screen displays the motor speed and also, enables the users to set a desired speed. L293D motor driver regulates the voltage and current supplied to the motor, and a feedback loop comprising an IR sensor module ensures the maintenance of the motor speed at the desired level. A performance test was conducted on the developed system to ascertain its correct functionality. The developed speed monitoring and control system operated satisfactorily during testing; achieving a speed control in the range of 800 to 3000 rpm. The developed device is useful and can be scaled up for various domestic and industrial applications. Keywords: DC motor Microcontroller Resistive touch screen Speed control Speed monitoring This is an open access article under the CC BY-SA license. Corresponding Author: Oluwaseun Ibrahim Adebisi Department of Electrical and Electronics Engineering, College of Engineering, Federal University of Agriculture Abeokuta, P.M.B 2240, Abeokuta, Ogun State, Nigeria Email: adebisioluwaseun@funaab.edu.ng 1. INTRODUCTION A direct current (DC) motor is an apparatus that transforms electrical energy into mechanical power. It finds numerous uses in household, robotics, and industrial automation applications [1]–[3]. DC motor is very famous because of its simplicity, growing technologies in its control, and its good performance on implementation [4]–[6]. In most applications, the regulation of DC motor speed is of great significance, particularly in applications that necessitate precise control, dependable protection, and flexible operation [7], [8]. Typical applications of these dynamic speed controls are seen in domestic uses such as automated control of doors and windows, home rotating appliances, and amplifiers [9], [10]. Also, industrial and robotics applications of DC motors with high control requirements are seen in rolling mills, paper mills mine wonders, hoist machine tools, robotic arms and hinges, traction, printing presses, and textiles mill among others [11], [12]. Literature has shown that the majority of DC motor applications benefit from its adaptable speed, effective speed management, frequent starts and stops, as well as the ability to change direction [13], [14]. The DC motor control can be attained via either mechanical or electrical means [15], [16]. In the past, the regulation