pH Meter Using Arduino Board For Glass Electrode.
The pHduino can operate using a LCD to display the pH and the temperature data like a pH meter. Also, you can control it using a computer by USB port.
The signal gain (slope) is determined by a couple of resistors. The signal offset can be adjusted manually by a trimpot or by an auto calibration code. There is a temperature sensor for temperature compensation.
It seems inferior and a little bit more expensive compared with a pH meter bench instrument. However, it is interfaceable, programmable, expansible, and, the more important, open and free!
Again, it is not intent to be a high resolution analytical instrument to compete with a commercial pH meter. It is to be different!
[Soucre] [url=http://code.google.com/p/phduino/]http://code.google.com/p/phduino/[/url]
Comments
