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This project is to build a temperature sensor that sends data to a computer. I have used the idea of this website which describes a device allowing to connect 8 busses of 8 sensors each. This makes a total of 64 possible sensors :) The data is sent to the serial port and then processed by some homemade programs.
The sensor itself is a high precision digital component. It must be used with a microcontroller, a PIC 16F84 here. The PIC also handles the serial communications.
Components
These are some of the components used in this project.
Test
Testboard...
Final version
It worked fine so I made a "soldered" version which is used in the production environement now
The sensor
This is a closeup of the temperature sensor. It looks like a transistor but it's a digital component.
Graphics
I'm using RRD databases to collect temperatures.
green : inside
red : outside
