The Planted Tank Forum - View Single Post - Arduino Diy pH probe
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post #15 of (permalink) Old 01-28-2013, 09:59 PM
No more Bow ties
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you can use resistors to limit voltage and current. Ohm's law. Knock down to what you need for the lcd and leave it at 5V for the pH sensor.

Get yourself a breadboard and test things out first before you start soldering. There's a process that makes life easier.

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