Electronics Soldering iron Project Kits Smart Car Line Following Robot Practice Soldering Iron Learning Beginners DIY Handwork

There is a 16 mm wide black runway in the white field.Our tracking car can drive along the black runway automatically.
No matter how the runway is bent, the car can be driven automatically.We all know that the reflectivity is different when the light source to the white objects and black objects.Here we use red light source.
The light is reflected through the ground to the photoresistor.By detecting the resistance of the photosensitive resistor can determine whether the car is driving in the white area.
If the detection is black runway, then the car to change the direction of driving and motor will slow down or even stop and Red LED OFF on PCB front side.Drive the car in the opposite direction so that the car is always running along the runway.

Instruction Download link:http://attach01.oss-us-west-1.aliyuncs.com/IC/DIY-Manual/10168.pdf
Model: D2-5
Name: D2-5 Intelligent Tracking Car DIY Kit
PCB Size:104x72x1.6mm
Installation dimension:104x72x55mm
Work Voltage:3V
Colour:blue
Material:plastic+metal
Note:

Parts need to be welded by yourself;

2 AA batteries are not included

Package: Car parts kits

1 x DIY Electronic car parts Kit (2pcs AA battery not included)

Package: Car parts and iron kits

1 x DIY Electronic car parts Kit (2pcs AA battery not included)

* 1 X 60w Soldering Iron (EU standard 220V)
* 1pcs Stainlness steel soldering stand
* 1pcs sponge
* 1pcs solder wire

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.