Design and Development of An Elevator System with Bluetooth Using the ATmega 32 Microcontroller with Loadcell

Modern elevator systems demand improved ride comfort, safety, and intelligent control. This paper presents the design and implementation of a Bluetooth-enabled intelligent elevator system integrated with a load cell and a PID control algorithm. The proposed system allows wireless floor selection through a mobile application while ensuring smooth and stable elevator motion using closed-loop PID control. A load cell continuously monitors the cabin load to prevent overload conditions and dynamically adjust motor control parameters. The PID algorithm regulates motor speed and position to minimize overshoot, oscillations, and settling time during vertical movement. Experimental results obtained from a prototype model demonstrate enhanced speed regulation, improved safety, and reliable wireless operation. The proposed system offers a low-cost and efficient solution for smart elevator applications in low-rise buildings and educational environments.