08-05-2019, 06:01 PM
Hi Rob,
When I upgraded to 5.2 from 4.something, two of my 3 DS18B20 temp sensors were jumping around wildly, in the 200+ degree range. The third one is acting fine. I figured they had failed, so I ordered a couple new ones, however the new ones that arrived today are doing the same thing (3 separate sensors on port 9).
I tried calibrating it but obviously won't change that much.
I have the heater set, so when I connect a sensor, the relay for the heater clicks on and off every 5 to 6 seconds, so I'm thinking the temperature is fluctuating and being registered by the display enough to change the heater, but not registering on the display.
Actually, as I type, I remember that at first, it would register a normal temp on the display, say around 82 or so, then jump to over 100-200, then back.
I haven't yet swapped the working sensor into the funky port yet, I'll try that and see if the fault follows the sensor or the port.
They are all the plastic tipped waterproof sensors from Sparkfun if that makes any difference.
Sorry for the poor explanation!
Any ideas?
Thanks!
When I upgraded to 5.2 from 4.something, two of my 3 DS18B20 temp sensors were jumping around wildly, in the 200+ degree range. The third one is acting fine. I figured they had failed, so I ordered a couple new ones, however the new ones that arrived today are doing the same thing (3 separate sensors on port 9).
I tried calibrating it but obviously won't change that much.
I have the heater set, so when I connect a sensor, the relay for the heater clicks on and off every 5 to 6 seconds, so I'm thinking the temperature is fluctuating and being registered by the display enough to change the heater, but not registering on the display.
Actually, as I type, I remember that at first, it would register a normal temp on the display, say around 82 or so, then jump to over 100-200, then back.
I haven't yet swapped the working sensor into the funky port yet, I'll try that and see if the fault follows the sensor or the port.
They are all the plastic tipped waterproof sensors from Sparkfun if that makes any difference.
Sorry for the poor explanation!
Any ideas?
Thanks!
