Hi All,
So here it is at the moment. It is need of a bit of a prune but i've been really busy so not had the chance but i will do on Sunday.
As you can see some algae growing on the glass and on some of the Monte Carlo. I've not got a clean up crew in here so i plan to add some Cherry Shrimps (not sure on how many yet) and i have six Ottos in a quarantine tank that i have had for about two months. They are nice and fat as i have been giving them some cucumber every now and again. I'll add them in at somepoint next week when i can be at home to see if they are ok with the CO2.
Regarding the Raspberry Pi this is it at the moment!
It is a Raspberry Pi 2 and it uses a waterproof thermometer for the tank readings....i'm going to add another at some point as it is easy to do. The white block at the bottom left is a thermometer and a humidity sensor. The plan for this was to put it in the cabinet so if something leaks the humidity would rise and i could be alerted.
The PH is monitored by an Atlas PH sensor and probe (that is the BNC connection).
Its quite basic. I have written a python script that runs every five minutes that logs all the values into a MySQL Database. I then have an apache web server that i am using to show the data on the website and this is programmed using PHP. On the Web page the PHP pulls the values from the SQL Database to create the graphs. The live information is pulled from the sensors using a PHP script that runs every two seconds and it goes and get live values. The pi and sensors cost about £75...the Atlas PH Circuit was £120 puls £15 for customs.
I plan on adding a conductivity sensor so i can get the TDS of the tank. However when i initially looked the PH and conductivity circuits can't easily work together...when i get some time i will find out why and see what i can do. I haven't touched this project for well over eleven months hencve why it isn't in a nice project box (To be honest i can't find a decent one for this!)
Any questions please just ask!
Thanks
Ross