For your viewing pleasure:
Temperature sensor

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.

components

Test

Testboard...

test



Final version

It worked fine so I made a "soldered" version which is used in the production environement now

prod



The sensor

This is a closeup of the temperature sensor. It looks like a transistor but it's a digital component.

sensor



Graphics

I'm using RRD databases to collect temperatures.

graph
green : inside
red : outside

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Last update of this page: Mon Jun 12 21:30:02 2006