DHT22 on Duet3 Mb3HC

marioys97

Hi!! I am trying to connect a DHT22 sensor to a MB3HC expansion board and the sensor values do not even appear on the screen. I have checked that if I change from:

; HUMIDITY SENSOR
set global.pinout = "HUMIDITY"
M308 S5 P"1.io0.out" Y"dht22" A"Filament Temp" ; define DHT22 temperature sensor
M308 S6 P"S5.1" Y"dhthumidity" A"Filament Hum[%]" ; Attach DHT22 humidity sensor to secondary output of temperature sensor

to:
; HUMIDITY SENSOR
set global.pinout = "HUMIDITY"
M308 S5 P"0.io0.out" Y"dht22" A"Filament Temp" ; define DHT22 temperature sensor
M308 S6 P"S5.1" Y"dhthumidity" A"Filament Hum[%]" ; Attach DHT22 humidity sensor to secondary output of temperature sensor

If I tell the board that the sensor is connected to the main board the values appear on the interface (although the show 2000 values as the sensor is not connnected to that port)
Currently running 3.5.3. Anyone can help?
Thanks!

gloomyandy

@marioys97 said in DHT22 on Duet3 Mb3HC:

M308 S5 P"1.io0.out" Y"dht22" A"Filament Temp" ; define DHT22 temperature sensor
M308 S6 P"S5.1" Y"dhthumidity" A"Filament Hum[%]" ; Attach DHT22 humidity sensor to secondary output of temperature sensor

If you run those two lines in the console do you get any sort of error?

dc42

@marioys97 DHT22 is deprecated and has never been supported on expansion boards. We recommend using BME280 instead.