1. Speedometer
speedometer application used to view your traveling speed, support miles / hr or km / h dual units. Speedometer function requires a strong GPS signal to support a maximum speed of 220 km display / h.
is a conventional mechanical speedometer, odometer typical mechanical connecting a flexible shaft, there is a wire rope, the other end of the flexible shaft is connected to one of the transmission gears in the flexible shaft, gear driven rotary rotating wire rope, wire rope driven magnet rotating a circle odometer cover, the cover is coupled and turns the pointer by the pointer spring is placed to zero, the rotational speed of the magnets causes a change in speed of the magnetic lines of force size, the balance is broken thus driven pointer. This speedometer is simple and practical, is widely used on small and large cars. However, with the development of electronic technology, many cars have been using electronic speedometer instrument, a common sensor signals acquired from the transmission speed, by changing the pulse frequency of a pointer deflection or digital display.