search

SequentMicrosystems / megabas-rpi

Command Line, Python lib, Node-Red and CODESYS driver for Building Automation Card
https://www.sequentmicrosystems.com
MIT License
8 stars 1 forks source link

When we convert resistance to temperature we cannot read below 35 deg #8

Open shortyishere opened 2 years ago

shortyishere commented 2 years ago

The resistance stops at 30,000 ohms?

alexburcea2877 commented 2 years ago

You have right, we limited the resistance value to 30K because of the high errors in measurements above that value.

shortyishere commented 2 years ago

Agreed. Inaccurate numbers would give us something to see if it goes below freezing on a typical type 2 10k thermistor which is used by most manufactures. Is there a way we can adjust this if needed. And maybe a firmware that we could use with this enabled.

alexburcea2877 commented 2 years ago

No problem to increase that limit in firmware if you need it. I will let you know when is ready

alexburcea2877 commented 2 years ago

We released a new firmware version, the resistance limit has been increased until 60K ohms. Please update the card firmware, instructions here: https://github.com/SequentMicrosystems/megabas-rpi/blob/master/update/README.md

shortyishere commented 2 years ago

Awesome that should be good for our needs. Appreciate it!

alexburcea2877 commented 2 years ago

I think we overreacted by setting the limit to 30K. Thank you for pointing this.