More DS18B20 Sensors [SOLVED]

[Simone Valmacco]

Hi,
I'm thinking about some improvements in my light, I have 3 GNC Minu running on my NanoReef (all dimmable with pwm led driver). I want to mount one DS18B20 to each of the fixture to measure the temp of every single light, and if something is going wrong reduce the power to all of them. That function is already implemented in Ferduino code, my question is if I can add more sensors without slowing the code (in the past I had - with other systems - some errors with multiple reading maybe because the DS18B20 aren't too fast specially at high resolution).
Should this be possible?
Thank you very much!

[Fernando Garcia]

Hi!

You can work with many sensors without problem using sensors in normal mode not parasite mode.

In parasite mode maybe the current will drop so much.

Also the wire should be the more short as possible.

You should make the code by yourself, I have pointed the way in this topics:

viewtopic.php?f=24&t=129

viewtopic.php?f=8&t=151

Best regards.

[Simone Valmacco]

Thank you very much for your answer. I didn't know the problem about parasite mode, maybe the problems that I had was only that I was running the sensors in parasite mode to save 1 cable...
Thank you very much!