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pHduino – an open source pH meter

pH is really important environment parameter. It’s value expresses acidity or basicity of a solution, e.g., soil or water. pH parameter depends on concentration of H+ ion in the aqueous solution. Probably we al heard that human skin pH is 5.5 so most cosmetics tend to be close to it to keep natural balance. So where would you use a pH meter? Probably many places like fish tanks where special fish can not stand different pH level, probably flower soils, any water and other purposes you can think of. phduino is a great choice for measuring pH level as it is an open source project. It has a LCD for displaying pH value and temperature. Phduino uses a standard glass electrode pH sensor. Phduino is the same Arduino board that has all matching Arduino pins and additionally LCD connector, temperature sensor connector and several other components specially needed for operation. With all this you get pretty cool tool that can be expanded for many purposes by interfacing, programming new features. Continue reading

Phduino – The pH meter using Arduino board for Glass Electrode!

How many of them ever use the pH meter to measure the pH of foods/drinks in your daily living life? Honestly, even though pH meter isn’t a brand new gadget in nowadays, but it’s still an unfamiliar device for most of the households. For those who have no idea, what is a pH meter for, it’s an electronic instrument, which is used to measure the pH (acidity or alkalinity) of liquid or half-liquid form. Normally, a typical pH meter is designed with a special measuring probe (A glass electrode) and connects to an electronic meter to measure the pH. After it, the pH reading is displaying on the screen. While most of the pH meter is only a standalone device, it’s a challenging yet fascinating project, especially when we are going to build a phduino here. Well, the phduino is a unique device, as it’s the combination of open-source pH meter using an Arduino board. This means, phduino is actually an electronic circuit, which is connected with a glass electrode pH sensor. It sounds like a very impressive device, isn’t… Continue reading