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    Heater & DHT22 issues after updating to 3.4 firmware

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    • A Former User?
      A Former User @jay_s_uk
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      • dc42undefined
        dc42 administrators @A Former User
        last edited by dc42

        @arnold_r_clark try reducing the M307 R parameter, for example to 0.4 or 0.35.

        Regarding the DHT22, is it a genuine one? See https://docs.duet3d.com/en/User_manual/Connecting_hardware/Temperature_connecting_DHT#choosing-a-dht-sensor

        Duet WiFi hardware designer and firmware engineer
        Please do not ask me for Duet support via PM or email, use the forum
        http://www.escher3d.com, https://miscsolutions.wordpress.com

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          A Former User @dc42
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          • dc42undefined
            dc42 administrators @A Former User
            last edited by

            @arnold_r_clark please share your config.g file.

            Duet WiFi hardware designer and firmware engineer
            Please do not ask me for Duet support via PM or email, use the forum
            http://www.escher3d.com, https://miscsolutions.wordpress.com

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              A Former User @dc42
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                jay_s_uk @A Former User
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                • dc42undefined
                  dc42 administrators @A Former User
                  last edited by dc42

                  @arnold_r_clark the code has changed in 3.4.0 firmware and DHT11 support has been removed, but DHT22 is working for me on MB6HC spi.cs1:

                  09a9e182-7482-4b14-aea2-1414c302694c-image.png

                  Duet WiFi hardware designer and firmware engineer
                  Please do not ask me for Duet support via PM or email, use the forum
                  http://www.escher3d.com, https://miscsolutions.wordpress.com

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                    A Former User @dc42
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                    • dc42undefined
                      dc42 administrators @A Former User
                      last edited by dc42

                      @arnold_r_clark have you connected a pullup resistor between the DHT22 signal wire and the +3.3V supply to it? I have a 10K resistor connected to mine.

                      We don't currently support any other humidity sensors, but we may support BME280 in RRF 3.5.

                      Duet WiFi hardware designer and firmware engineer
                      Please do not ask me for Duet support via PM or email, use the forum
                      http://www.escher3d.com, https://miscsolutions.wordpress.com

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                        A Former User @dc42
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                          A Former User @A Former User
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                          • dc42undefined
                            dc42 administrators @A Former User
                            last edited by

                            @arnold_r_clark that looks OK so I don't know why it isn't working. Which country are you in?

                            Duet WiFi hardware designer and firmware engineer
                            Please do not ask me for Duet support via PM or email, use the forum
                            http://www.escher3d.com, https://miscsolutions.wordpress.com

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