why not use the one-wire sensors? Super-small in size and cheap as well. If you would not like to put the necessary sensors to a bus-cable (actually, a simple cable like the Cat5 or so and all sensors connected as a bus to this cable) then you even could use the one-wire buttons called iButton. Sensor with battery in a small housing, like a coin. So you could equipp your scope with this "buttons" wherever you like. In the end, you pick them out and put them into a little reader unit and read the data. Buttons can be configured to take a measurement all n-minutes or so.
Interesting. I did not know about the one-wire technology.
This sort of low cost, low performance digital microlan looks promising. Here is a good introductory page from a hobby component provider:
I found this site interesting:
Temperature monitoring software for Linux, I have two EEPC netbooks running EEBuntu that might be just the thing for this. This would solve the controller/monitor problem with looked like the most costly/time consuming part of any digital solution.
The iButtons look a lot more expensive on a per sensor basis.
Are there any books out there providing a good grounding in 1-wire network design and set-up; e.g. how to use these little digital switches and other network components I see? Something along the lines of the Arduino Cookbook for example?
This looks like a cheap and convenient and versatile enough technology, with a low enough cost of entry, to merit closer examination.