5 replies

Troubleshooting OSError with DHT22 Sensor in ESP32 MicroPython Real-Time Control System

Hi guys @Middleware & OS , am developing a real-time control system using an

ESP32

ESP32

, MicroPython, and an ML model to predict temperature based on sensor(

DHT22

DHT22

) readings, and integrate it with a relay to control a heating element. I have setup flash MicroPython firmware on the

ESP32

ESP32

, connected the

DHT22

DHT22

sensor to the

ESP32

ESP32

(data pin to

GPIO 4

GPIO 4

), connected the relay module to control the heating element (relay input to

GPIO 5

GPIO 5

).

But am getting the error

Failed to read sensor: OSError

Failed to read sensor: OSError

This is my code

Solution

Since esp32 comes in different pin layout you can try debugging by adding a led to the pin 5 and try to blink it