The problem is easily solved by running a small script outside of node-red on the same pi, that reads the ds18b20 sensors and passes that information through to node-red by mqtt message or a network socket.
I have this running 8 ds18b20 sensors for years now without any problem.
See thread here
Hello meeki007
Great I will give it a shot.
I have also had some fun with the ds18b20 and Rpi.
I have been looking at core Linux 1-wire driver and have not been alle to figure out how to convert and pull data from all sensors in a single pull and to keep it running stable with 20 sensors plus on a line. After hours/days the Rpi freeze. I have thought it might be the 1-wire library, that could not handle the emulation of the 1-wire bus.
Best regards Brian
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