The 85 reading is actually an error message used by the ds18b20 to indicate it has not had time to complete the processing of the reading. Most commonly this is only seen when the node first boots up and can be ignored or fixed by adding a small delay. You will find a lot of information on this if you do a google search. I have never experienced it myself but from other posts on the net it seems power supply problems and long cable runs to the sensor can also cause the error. Some have also had success by using a different resistor value. Note you only need one resistor fitted near your nodemcu not a resistor at each ds18b20.
If the 85 reading is well outside your expected reading you could just filter out any readings over 84 as well.
Hi, sorry for the delay, I had just read your post and I could said "me too"
But I solved the problem and it works for two years now.
I explain my solution here, if the French don't afraid you.
I resume, a 7.5volts power supply, a passive injector, and a spécial home-made cable to bypass the RJ45 socket. The 7.5 v go to Vin-Gnd of the Nano to produce 5v wich is returned to the W5100. QED.
@helmuteke said in Unkown Touch switch PCB : How to make them push instead Toggle:
From google this looks like a serial eeprom.
For the other chip if it has no writing then it's impossible to help, especially when the picture is in such low resolution.
My guess is the HTTM sensors have no resistance soldered so there is no way to change it unless you remove them, add the resistance and put them back...
@rvendrame Apart from the distance question I'm completely with you. Nevertheless I'll try to get that working It's already coded, so why not test it out? If it's not working or not used by anyone: no problem. I just wanted to avoid setting some kind of standard that might be somehow wrong.