Código Esp32 do sensor IR

Use LM393 IR Module as Motor Speed Sensor ...

The LM393 IR Module. The module has two vertical columns with an IR LED on one column and a phototransistor on the other. Whenever the path between the IR LED and phototransistor is cut, the D0 pin goes high. Sellers call this module a LM393 speed sensor. The LM393 is in fact a comparator IC and not a sensor…

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Gravity__Analog_Infrared_CO2_Sensor_For_Arduino_SKU ...

Q. How do I calibrate? A. The sensor should be calibrated regularly. The cycle time should be no more than 6 months. Manual calibration of zero point is to calibrate the sensor's HD pin input low level (0V) to calibrate the zero point, and the low level shall last more than 7 calibration of zero point is 400 ppm, Please ensure that the sensor …

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ESP32 Series - Espressif

3 ESP32 Pin Layout (QFN 5*5, Top View) 14 4 ESP32 Power Scheme 18 5 ESP32 Power-up and Reset Timing 19 6 Setup and Hold Times for the Strapping Pin 21 7 Address Mapping Structure 23 8 QFN48 (6x6 mm) Package 49 9 QFN48 (5x5 mm) Package 49 10 ESP32 Part Number 50 Espressif Systems 7 Submit Documentation Feedback ESP32 …

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From KY-039 To Heart Rate -

What the sensor provides is just an "analog" value from 0 to 1023, telling how much infra red light the light sensor receives, or actually how much something is shading the light sensor. The higher value, the less infra red light. In short: place your finger between the IR led and the light transistor of the sensor.

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