After installing the magnet, inductor and code meter, the installation test is completed. Check whether there is data display on the code meter by cycling for a distance. If not, check whether the distance between the inductor and the magnet is adjusted properly. In this way, you can see your speed and time. Press the key to switch modes, such as from the cycling time mode to the average speed mode. At present, there are solar bicycle computers on the market, which can be used when there is sunlight. There is no need to worry about the battery life and the pollution to the environment is reduced.