Project:Vivarium Monitoring System

Vivarium Monitoring System - Asc

I needed a system to monitor the temperature and humidity of a vivarium (a tortoise house!).

Have a screen that I can easily see
Display both temp and humidity
Beep and flash when things are awry
Have a way to temporarily disable the alarm whilst working on the vivarium
3 Sensors (room, in heat, out of heat)
The less cables the better
Be configurable without needing to connect to a computer
and most of all PUT IT ON THE INTERWEBNETS! (for the world to see, for me to control, and to receive warnings)

After looking through my box of parts I decided to use the following.

Nanode - for base sensor monitoring and internet mojo,
Using three DHT-11 temperature and humidity sensors, simple and accurate enough,
A blinkm as a warning light system,
A peizo to beep,
A PoE injecter and ejackulator to get power over an ethernet cable,
Using 3.5mm headphone cables and sockets for the sensor cabling,
A LAMP backend for long term logging,
A screen and user interface.

What does this all mean - 3 arduinos = more roarsome = way overkill project!

All that is left is the case which I can magic up on a laser cutter.

To see how it all goes I threw a proof of concept setup together without all the internet magic and simply using a vanilla arduino:
YouTube Video