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Differences can be found here

I'm sure your method will be quite accurate.
Wouldn't use the boilers own sensors.
The DS1820 are easier to interface.
Guess it will be more interesting to see the in/out temperature difference than having a 0,1 degree accuracy.

Heubie, when we got a new floor with floor heating I put these gray colored "slagvaste PVC" tubes through the floor at the centre of each loop. Just bend a piece of tube 90 degrees, close one end with tape, stick the uncovered part through the floor and fix the other part to the floor like...

Quite annoying for new users to have at least 50 approved postings...
I responded to a posting more then half a day ago and apparently it is still waiting for approval.
Would say a smaller amount of approved posts should be enough to see if someone is serious or just here to spam.

I use Opera as well.
No probs on a MacBook Pro.

I bought 50 pcs DS18B20 last week on eBay.com from thaishopetc. They were priced at $89.99 "or Best Offer". I offered $50 to which he responded that $70 was ok. No shipping charges and they came well packed in about a week. He is selling the DS18S20 as well. Buy 5 pcs, offer $8 and they wi...