Infrared tracking

Version Description
Version Name: Four-Way Tracking Module V1.1, V1.2
Release Date: 2023/11/15
I. Function Introduction
Project Introduction Video

This module has four outputs, each equipped with an indicator light to indicate its status.
There are two versions: V1.1 with a 74HC14D chip, and V1.2 without this chip.
Elegant design. The design style is based on several excellent products found online. II. Renderings


III. Functional Modules
1. Power Indicator
This is a power indicator light; the brightness can be controlled by adjusting the resistance of R1.
2. Four-Way Infrared Tracking Module
The circuit logic of these four tracking modules is the same. The essence of infrared tracking is that different colors reflect infrared light to different degrees. This module uses the TCRT5000, which consists of an infrared emitter and an infrared receiver.
Its working principle is as follows, for example: When the infrared emitter encounters a black line, the reflected light is weak and cannot turn on the infrared receiver, so IN1 is high and the indicator light is off. When it encounters a white line, the reflected light is strong and can turn on the receiver, so IN1 is low and the indicator light is on. We can determine the color of the detected line based on the voltage level of the INx pin, thus achieving line tracking.

Note: Version V1.2 seems to be able to output analog signals, which can be analyzed in the description of the module's circuit diagram on Taobao. It's similar to the voltage divider form of a series photoresistor. This needs further testing and will be explained in the version description after testing.
3. Four Tracking Indicator Lights
These four lights are indicator lights for the four-way tracking module, used to indicate the working status for easy observation and debugging.
4. Screw Holes
Four screw holes are reserved for easy installation.
IV. Remarks

This project will be continuously improved and updated.
Update time: 15th or the last day of each month.
How to obtain materials:
UP: open01_T_Jupiter; duduvue;
QQ: 826793815


Subsequent open source projects and updates will be released on Bilibili, LCSC Open Source Platform, Github, and Gitee. Please follow them for real-time updates!