tender for mechatronics equipments => limited; arduino esp32 - sensors iot trainer: iot kit based on arduino esp32 servo motor 4 nos push button, 10 in leds 5v dc relay mini bread board one16x2 lcd display ir sensor temperature sensor with connecting wires to wire the sensors switches to arduino and also to esp32 ultrasonic sensor level control system trainer: transparent water tank to visualize the water level. one no of reservoir tank one no of high quality magnetic switches to detect level of water tank. all components to be mounted on a neat elegant frame. one ac solenoid valve provided at the outlet of process tank for disturbance. conveyor control trainer one stepper motor (2kg) for conveyor control work as a rotary actuator one type of proximity sensor to detect the presence of material. belt for conveyor movement proximity sensor for sorting purpose stepper motor controller for run the stepper motor. and one mechanical based pulley to rotate the conveyor system one metal coated box contains the power supply unit and driver circuit unit respectively.