Quantity   Component name
1 × GPS Module to find its own location
1 × GSM Module to send and recieve data
1 × Gyro / Compass to calculate the real north direction
1 × Steppermotor / Servo to rotate the needle
1 × Arduino Mini the logic behind
1 × Battery Evaluation, Demonstration Kits, Boards and Modules / Evaluation Kits, Boards and Modules