SoM eval board + humidity/temp sensor issue

Edge Systems
1

Hello Everyone,

I’ve been attempting to setup the “Grove DHT11 temperature and humidity sensor” with my SoM eval board however have been facing few issues. I followed a simple tutorial posted on Particle’s website, linked here. However, after following this, I was able to compile and flash the code and firmware to the board, but did not receive any humidity or temperatures in events. I do have my sensor plugged into J10 (A1) however nothing is being reported. Also, nothing in custom data was being reported either. I’m pretty stumped here.

2

You should uncomment the Log.info statement in loop() and then monitor the USB serial debug output to see if the problem is with the sensor, data, or publishing.

3

Thanks for the response! It’s definitely something wrong with the sensor, data or publishing then because I had uncommented that…

Thanks

4

In lib/Grove_Temperature_And_Humidity_Sensor/src/Grove_Temperature_And_Humidity_Sensor.cpp, try uncommenting this block of code and see what the values look like in the USB serial log:

	Serial.println(j, DEC);
	Serial.print(data[0], HEX); Serial.print(", ");
	Serial.print(data[1], HEX); Serial.print(", ");
	Serial.print(data[2], HEX); Serial.print(", ");
	Serial.print(data[3], HEX); Serial.print(", ");
	Serial.print(data[4], HEX); Serial.print(" =? ");
	Serial.println(data[0] + data[1] + data[2] + data[3], HEX);

If you are doing a cloud compile, also remove this from project.properties to avoid having the released library take precedence over your modified library. This is not necessary for local compiles.

dependencies.Grove_Temperature_And_Humidity_Sensor=1.0.7
5

Just tried this yet I’m still not getting anything related to “hum” or “temp” on both USB serial and cloud events…