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Rahul B
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Asked: 2022-08-17T10:35:50+05:30 In:

How do I Connect ESP32 – DHT22 with Long Cable

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Hi,
I plan to run an ESP32 with a 8 channel relay board and 5 DHT22.
The DHTs are connected via long wire( perhaps 20m?). I run a analogous setup with AM2301 and ESP8266.
Now I learned that the DHT22 is recommended to run at 5v, but the ESP32 GPIOs aren’t( officially?) 5V tolerant.
So my idea was to add two a position shifter to my setup. Is this the recommended way? Because I see a lot of post, where people just connect the 5V data pin to the GPIOs.

connecteddht22esp32esp8266wire
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    1 Answer

    1. We suggest you to use level shifter, direct connection maybe work for a short-term test, but we could not guarantee long-term functionality.

      We suggest you to use level shifter, direct connection maybe work for a short-term test, but we could not guarantee long-term functionality.
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