Quantity   Component name
1 × ESP32
1 × LCD display (240X360) use ST7798 drive
1 × L298 board drive board for stepper motor controlled by ESP32
1 × NEMA 17 stepper motor
1 × 3D printed mechanism it has 1- funnel for the dry fish food, 2- rotating helical drive to move the food from the food funnel to the fish tank , 3- motor holding parts, 4- mounting bracket to hold the mechanism to the fish tank , 5- electronic box carrying the electronics component (ESP32 , LCD, L298 board)
2 × steel bearing 8mmx22mmx7mm