1, the tracking car is an "intelligent" car, which can find its own trajectory and move according to it. This paper briefly records this electronic production process, I hope you like it. If you have any suggestions and comments, please leave a message.

2. Check the equipment according to the component list to see if there are any missing parts. The following picture shows the family portrait of the component:

3. Welding components in turn: welding small components first, then welding large components, and finally bonding the battery holder and the motor. After welding all components, visually check whether there is welding reverse welding or missing welding in virtual welding. After confirmation, proceed to the third step.

4. After all parts are welded, visually check whether there is reverse welding or missing solder joints. After confirmation, proceed to the third step.

5. Install the battery for debugging. The two wires of the motor may be installed backwards, the relative position of the photosensitive resistor and the light-emitting diode may need to be adjusted, and the resistance value of the adjustable resistor (potentiometer) may be inappropriate and needs to be adjusted.

6. After debugging, the car can automatically track on the black rail, and the production is successful. The black track can be made by itself. Customize the track on the floor with black tape, and the car will walk slowly on the track.