D2-5 Intelligent Line-Tracking Car
$4.84
The D2-5 intelligent line-tracking car is an electronic product that can recognize black and white lines and automatically turn to move forward. It is suitable for novice DIY and intelligent education fields.
Introduction to the D2-5 Intelligent Line-Tracking Car
The D2-5 intelligent line-tracking car is an electronic product used in intelligent education. When using it, you can learn about mechanical structures, basic electronics, the working principles of sensors, and even the control principle of the LM393. It can enhance your understanding of electronics and improve your hands-on ability, making it suitable for junior high school, high school, and college students, as well as electronic DIY enthusiasts to learn and build. If you want to expand its functions, you can completely add other sensors to achieve this. For example, adding a pump, a flame sensor, a water tank, and a controller can transform it into a fire-fighting car; you can also add an ultrasonic sensor to turn it into an obstacle-avoiding car or other enhanced intelligent cars.
Introduction to the working principle of the D2-5 intelligent line-tracking car
On the back of the included instruction manual, there is a white surface with a black track approximately 16 millimeters wide. The line-tracking car can automatically drive along this black track, even when the track is curved.
The principle is based on the difference in reflectivity when light shines on white and black objects. The bottom of the car uses red LEDs as the light source; the light is reflected by the ground onto the photoresistors. By detecting changes in the resistance of the photoresistors, it can be determined whether the car is moving on a white area. When a black track is detected, the resistance of the photoresistor increases. The LM393 chip compares voltage levels in real time – when it recognizes an increase in the photoresistor’s resistance, the motor on that side will slow down or even stop, and the LED on that side will turn off. This causes the car to move in the opposite direction, enabling it to automatically determine its path and stay on the black track at all times.
Product parameters of the D2-5 intelligent line-tracking car
Operating voltage: 3V (two AA batteries, Nanfu batteries recommended)
Board size: 72*105mm
Main control chip: LM393 voltage comparator chip, no programming control required
Instruction manual: A paper manual is included, containing assembly instructions, debugging instructions and a black track pattern.
Note: The paper manual needs to be folded for packaging, so there may be creases and it may not be flat when received. You can place it in a book or press it with a large flat object for a period of time to make it relatively flat. Alternatively, you can print the track pattern yourself, then fix its four corners on the ground or desktop with tape before use.
Display of D2-5 intelligent line-tracking car components
| Name | Specification | Quantity | Designator |
|---|---|---|---|
| Integrated Circuit | LM393 | 1 | IC1 |
| Electrolytic Capacitor | 100μF | 2 | C1, C2 |
| Variable Resistor | 10kΩ | 2 | R1, R2 |
| Resistor | 51Ω | 4 | R5, R6, R11, R12 |
| Resistor | 1KΩ | 2 | R7, R8 |
| Resistor | 10Ω | 2 | R9, R10 |
| Photoresistor | 5516 | 2 | R13, R14 |
| LED (Red) | Red Light | 2 | D1, D2 |
| LED (Red) | Red Light | 2 | D4, D5 |
| Transistor | 8050 | 2 | Q1, Q2 |
| Latching Switch | 8*8 | 1 | S1 |
| DC Motor | JD3-100 | 2 | M1, M2 |
| Name | Specification | Quantity |
|---|---|---|
| PCB | 1 | |
| Wheel | 42A | 2 |
| Axle | 2*30 | 2 |
| Axle Sleeve | 2mm | 6 |
| Three-way Axle Sleeve | 2.5 | 4 |
| Gear | 22 | 2 |
| Spiral Wheel | 2mm | 2 |
| Sleeve Screw | 2.3*7 | 4 |
| Motor Screw | 2mm | 4 |
| Universal Wheel Screw | 5*35 | 1 |
| Battery Holder | AA x 2 | 1 |
| Motor Wire | 2 |
Circuit schematic diagram of the D2-5 intelligent line-tracking car
Circuit principle: The LM393 compares the resistance of the two photoresistors in real time. When an imbalance occurs (for example, one side is over the black track), it immediately controls the motor on that side to stop and the motor on the other side to rotate faster, thereby enabling the car to correct its direction and return to the proper path. The entire process is a closed-loop control, allowing for fast and sensitive control.
D2-5 intelligent line-tracking car PCB diagram
D2-5 Intelligent Line-Tracking Car Demonstration Video
Reference diagram of the finished D2-5 intelligent line-tracking car
The D2-5 intelligent line-tracking car is a DIY electronic product that utilizes the LM393 voltage comparator chip. It applies the LM393 to compare voltages and control the left and right servos to move alternately. There is a 16-millimeter-wide black track on a white ground, and our line-tracking car can automatically drive along this black track. When the light source shines on white and black objects, their reflectivity differs. When a red LED is used as the light source, the light is reflected by the ground onto the photoresistor. By detecting the change in the resistance value of the photoresistor, it can be determined whether the car is moving on a white area. If a black track is detected, it indicates that the car has deviated from the path. At this point, the motor on this side will slow down or even stop, the green LED on this side will turn off, and the car will move in the opposite direction. This ensures that the car can keep moving along the black track.
Shipping Cost
We only ship to the United States. Shipping costs are calculated based on the total order amount.
Shipping Method And Delivery Time
All orders will be processed and shipped within 72 hours of placing the order (excluding weekends and holidays). They will ship from Shenzhen, China, primarily via 4PX logistics. Depending on the destination and logistics conditions, other carriers such as DHL, FedEx, UPS, USPS, etc., may also handle the delivery. Estimated shipping time is 7-12 business days, with actual delivery occurring in 10-17 business days, depending on logistics conditions.
Payment:
We accept Visa, Master card, Maestro, American Express, JCB, Dinner's Club, Discover, Paypal, Apple Pay, Google Pay .
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