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Software threshold infrared tracking module

Overview

Infrared tracking module based on QRE1113GR

The idea comes from the infrared tracking module in the TI-RISK kit

Compared with traditional analog comparator modules, it can achieve functions that do not require an ADC to implement software thresholds.

Different reflectivities correspond to different charging slopes

You can delay reading after a specified time to implement the software threshold function.

Programming ideas:

Turn off the infrared fill light
Set the IO port to push output
IO port is set to high discharge
Delay waiting for capacitor to charge
The IO port is set as analog input
Turn on the infrared fill light
Delay for a period of time and wait for the capacitor to charge through the phototransistor
Read IO port status

Design Files

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Update:2025-06-24 13:39:56

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