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1  Topics / Home Automation and Networked Objects / Re: A Modular Central Heating System Controller - Arduheat on: September 01, 2012, 08:56:36 am
I can strongly recommend DS18B20.
At you get them with a stainless steel housing:

I have had 8 of them in one line so far without any troubles...

BR, ar
2  Using Arduino / Networking, Protocols, and Devices / Re: Mega2560 and ICOMSat GPRS 1.1 UART connection on: August 19, 2012, 03:44:40 pm

So if this is your shield, I own a different one.

On the right hand side there are 3 rows of pins, one row for RX, one for TX and one for the pins to the arduino. The pins in the RX row and TX row are all connected.
Remove all connectors on these pins.

Connect by seperate cable RX to arduino mega pin 18, TX to mega pin 17. This makes the connections for Serial1, same use as Serial.

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