A fish tank monitor using Raspberry Pi and (possibly, in the future) many sensors. Currently I'm only support the DS18B20 temperature sensor.
It's a fairly straight forward setup in the Pi and even simpler here on the app. For all details on how to setup the Pi please visit my blog as I have everything documented there.
I leverage some work from this repo created by Tomas Holderness and applied my own modifications.
You can contribute with your own ideas using our open Trello board or simply clone this repo and submit pull requests.
In order to get going, make sure you have node.js installed. For the Pi install version 0.10.24 as it's the only one of the newer versions that support ARM processors - it's this file over here.
Once you have node.js installed, execute the following:
git clone https://github.com/tarciosaraiva/fish-tank-monitor.git
cd fish-tank-monitor
npm install
But before you run, you might want to update the config.json file with your own preferences. By default we poll for file changes every 5 seconds and the file to read is available at /tmp/content. You should replace this with your own file and possibly your own polling preference.
The polling is based on the schedule package available from npm. It's very easy to use: just specify a number followed by either ms, s, m, h or d.
Then you're good to go. To run simply execute npm start and the app will be running, polling for file changes at your specified schedule.
Here's an example file you can use:
7e 01 4b 46 7f ff 02 10 25 : crc=25 YES
7e 01 4b 46 7f ff 02 10 25 t=23875
My goal is to incorporate pH, Ammonia and Nitrite sensors which are developed by Atlas Scientific. They are currently working on the later two but the pH sensor is already available.