Getting -381 degrees on the one wire sensor

[chee]

I’m getting -381 degrees on the one wire sensor…tried a couple but same thing. The bummer is the ground and 3.3 jumps touched each other and I’m fearing I burned out the port.

[Ian]

@chee

Chee,

Welcome to the Cayenne community!

I hope you don’t mind that I moved your question to the need help with projects category.

You might take a look at this thread as it was a similar problem -

DS18b20 not appearing in dashboard anymore

Might take a look at the RPi itself and see what it is getting from the sensor. cd /sys/bus/w1/devices/ ls cd 28-"put your serial here" ls cat w1_slave if you get something that looks like this, 25 01 4b 46 7f ff 0b 10 65 : crc=65 YES 25 01 4b 46 7f ff 0b 10 65 t=18312 the last number, 18312 in my case, is the temp in milli-Celsius. So in my case it is 18.312°C in my back yard. At least you will know if the sensor and RPi are working together. [image] My heartfelt thanks to pyromd76 ove…

Again, welcome,

-Ian

[bestes]

Yikes! Hopefully you didn’t burn it. I’m assuming you are using GPIO pin 4 too.

A large negative number generally is indication that there is wiring issue. Did the sensor ever display correct data?

-B