DS18B20 Showing 85000 Raspberry Pi

I’ve recently been trying to get a DS18B20 working with the Raspberry Pi, and although its well documented around the internet I ran into a bit of an issue where mine was always returning t=85000.

Although alot of people claims this is wiring (which could be the case) for me it was actually to do with how it was reading the value in the kernel module.

Originally in modules I had:


As it turned out, there’s a problem with the pullup (http://www.raspberrypi.org/forum/viewtopic.php?f=37&t=48588) where the below resolved the problem:

w1-gpio pullup=1


Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s