Depois de meus peixinhos morrerem de uma vez só, denovo, desisti de criá-los por enquanto e resolvi usar o aquário para outra coisa:

Montei uma windowfarm com garrafas de água mineral reaproveitadas e vasinhos plásticos. O sistema de irrigação foi constriudo com uma bomba de água de parabrisas de carro e mangueiras de aquário. E para automatizar o sistema estreiei meu garduino na protoboard!

É tudo novo pra mim, o arduino e sua programação e também o cultivo hidropônico. Estou bem entusiasmado com os resultados até agora…

Mais infos aqui: http://wiki.nosdigitais.teia.org.br/Garduino

I started my WindowFarm about a month ago, working on it in my spare time. I wanted to interface it with a microcontroller for automation and used the ATMega168 (same as on the Arduino) to control a windshield wiper pump to move water through the system for 4 seconds every 10 minutes.

The construction of the actual WindowFarm setup is IMO pretty terrible-looking and very sloppy. I just wanted to get something working though, and the plants don’t seem to mind.

Here is a picture of the circuit:

And here is a picture of the complete WindowFarm:

I wrote a little bit of code for a Fonera Fon2100 router I had lying around, making the modifications to the OpenWRT firmware (version 8.09.1) running on there. It gives its web-interface a ‘Sensors’ link that AJAX-updates the analog pin values from the Arduino. Right now on my setup it is all just noise except pin 0 which has a photosensor on it that gives light readings near the window. It is the plan to turn on the lights in an 18-hour window if the light value falls below some threshold.

Here is a screenshot of OpenWRT’s modified web-interface:

I have the code for the Arduino sketch as well as the OpenWRT changes here: http://github.com/nemik/arduinoponics and more photos of the setup on my Flickr set here: http://www.flickr.com/photos/nemik/sets/72157622608195083/

I’m going to try to automate this more and more, hopefully also fix the construction.

Open to any suggestions or criticisms!