Name: Single- light source board Voltage: 5-5.5VDC Current: less than 1.5A Interface: Power + - Motor M Principle: Use a shield on the photoresistor. When the light irradiates the shield to form a shadow, when the photosensitive on one side forms a difference with the other side, the motor is controlled to find the balance point, that is, the center of the light source. The power supply uses 5-5.5V DC power supply, and the current is sufficient within 1.5A. The motor uses a geared motor, the slower the better, the owner uses for JGY370 6V , when the power supply is 5V, without load, the speed is stable. If the motor speed is too fast, it may cause the motor to sway left and right when it is aligned with the center of the light source, but it not jitter. This circuit uses a short delay for anti-shake. When connecting the motor and the board, the positive and negative poles are not distinguished. During the test, if the motor is found to rotate in the opposite direction to the light source, just change the position of the motor wire. The power supply must be regulated 5-5.5V and cannot be directly connected to the solar panel. colour: black Material: ABS Size: 36x16x1.2mm Package Contents: 2 x probe 1 x Motherboard Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.