DIY temperature probe

[freshroastedpeanut]

I've finally put together a writeup about my online temperature datalogger/webcam. The tank page can be seen at

http://www.gimpymonkey.org/testcam.php

The writeup on the circuitry behind this page can be found at:

http://www.gimpymonkey.org/article.p...30105201014673

The temperature logger is still pretty primitive, however it is coming up on its' first birthday, and is still working like a champ. This system could be easily modified to function as a complete temperature controller, or by adding additional circuitry it could be pressed into service as a tank condition monitor/controller.



Cheers, JJ

[gregt]

Very interesting. Wish I had more time. I'd love to play with that. Any idea what is causing the spiking in the room temp reading?

[freshroastedpeanut]

Our furnace My excellent design skillx left me with no choice but to place the box directly in the airflow of the furnace vent. Whoops! .

Next time I get around to playing with this thing I'll add some leads to the room temp probe to move it away from the MH ballasts/computer/furnace vent so that I can get some usable data out of the room temp probe.

Over the course of the summer I was able to get some fairly useful readings off it, allowing me to beter time the fans I have setup on the tank, bringing my daily temp swing in the tank down from 3-4 degrees to what it is now.

Cheers, JJ