I am wanting to implement an Arduino PH Meter and I know there are a lot of these out there that people have made and some details published online.
Is there a good cheap product(s) that can be recommended?
From what I can see I need an Arduino + a PH Meter board + a Ph sensor normally BNC connector. Is there a specific type/quality I should look for?
Can all ph sensors be permanently placed in an Aquarium? What happens if they are not suppose to be permanently submerged and they are?
I do not have a reef aquarium but a simple Community Tank - about 300 litres.
I have done some searching and there are a number of products that people mention but is there a known good set of products that people can recommend?
Do you need to buy calibration liquid? Or do some support not needing this? or is this bad?
Circuits for Arduinohttp://www.ebay.com/itm/pH-Circuit-Sensor-for-Arduino-/200779624796#ht_1673wt_1161
- About $28 + Shipping (stupid shipping price on Ebay)http://www.phidgets.com/products.php?product_id=1130_0
- $30 + Shipping (not yet checked price to NZ)http://www.robotshop.com/bnc-ph-sensor-shield-arduino-3.html
- $38.55 shipping (not yet checked price to NZ)
PH Sensors (BNC)http://www.phidgets.com/products.php?product_id=3550_0
= $25 + shipping (not yet checked price to NZ)http://www.ebay.com/itm/K1BO-PH-Electrode-Probe-BNC-Connector-for-Aquarium-PH-Controller-Meter-Sensor-/251269399186?pt=LH_DefaultDomain_0&hash=item3a80d2c292
- $9 incl shipping - Quality?
I know there are lots of different products but is there any recommended products from people who have already done this?