DHT22 - switched sensor types?
i am trying to set up a DHT22 node. This is my first step with mysensors ever. After figuring out some hardware issues, all connection is working, at least for a distance of around 1 meters.
However, i'd like to ask how big can a temperature offset of a DHT22 sensor be? I have a room temperature of around 22°C, however, this sensor shows around 28°C - and a humiditiy of 23%. So, either the measurement tolerance is quite big, or i have somehow switched both readings.
Is my code correct? I think i have some weird errors, e.g. only increasing temperature is registered, when decreasing temperature, the value isn't decreasing as well.
@simonszu Looks like you have the temp and humidity swapped around in the send message part
here is a direct copy of your sketch. you are sending the temperature in the humidity message and humidity in the temp message
send(msgHum.set(temperature, 1)); // this should be humidity #ifdef My_DEBUG Serial.print("T: ") Serial.println(temperature); #endif send(msgTemp.set(humidity, 1)); // this should be temperature
Ah. Yeah. Thanks. Sometimes one can be really blind when debugging own code.
@simonszu Yes I know the feeling well !! Hope it all works as expected now
dht sensors are not very accurate anyway 😅