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hsteve · 01-01-2009, 08:43 AM

I've been thinking of a new DIY project, namely a DIY pH controller. I've got a basic knowledge of electronics, and think this would be a fun project to try.
The idea is to take a standard pH probe and hook it up to an interface that connects to my computer. The output of a probe(I think) is voltage, so it should be a relatively easy task to wire the probe to a circuit that either steps up or down the output voltage to a value that my 'puter should be able to interpret...then have the computer open a solenoid to inject CO2 to lower, and close it to stop.
Does anyone have any ideas, or sources for the circuitry?
Thanks in advance,
- Steve

01-01-2009, 08:43 AM	#1 (permalink)
hsteve Member Join Date: Jul 2005 Location: Denver, Co. Posts: 60 iTrader Ratings: 0 Plant Points: 4000	DIY pH controller? I've been thinking of a new DIY project, namely a DIY pH controller. I've got a basic knowledge of electronics, and think this would be a fun project to try. The idea is to take a standard pH probe and hook it up to an interface that connects to my computer. The output of a probe(I think) is voltage, so it should be a relatively easy task to wire the probe to a circuit that either steps up or down the output voltage to a value that my 'puter should be able to interpret...then have the computer open a solenoid to inject CO2 to lower, and close it to stop. Does anyone have any ideas, or sources for the circuitry? Thanks in advance, - Steve