On 09/10/18 11:35, Graeme Gemmill wrote:
Interesting comments, thank you.
1. The DS18S20 is a sensor I happened to have around unused. Tim is
correct - it doesn't need/use the 5v.
2. It WAS the freezer. I turned it off for two hours and the
oscillation stopped and resumed after switching on again. The air in
the summerhouse is very static - only ventilation is what comes
through the keyhole. The heat given off from the condenser cooling
coils must be what's driving the temperature variation, and I know
that RH varies with temperature, but why such a small variation can
affect humidity readings by 2 % points I can't imagine. Any physicists
out there?
I think I'm not going to concern myself further now that I know the
cause.
Regards to all
Graeme
Thanks for letting us know the solution to the problem. We like to have
a wrap-up.
Peter M.
--
Next meeting at *new* venue: Bournemouth, Tuesday, 2018-11-06 20:00
Check if you're replying to the list or the author
Meetings, mailing list, IRC, ... http://dorset.lug.org.uk/
New thread, don't hijack: mailto:dorset@mailman.lug.org.uk
