Hello it's my first post in this forum.
I need help in interface ph/orp adapter (http://www.phidgets.com/products.php?category=6&product_id=1130) with arduino and this ph eletrode (http://www.ebay.es/itm/pH-Electrode-Probe-BNC-Replacement-for-pH-Meter-Tester-/110873956808?pt=UK_Pet_Supplies_Fish&hash=item19d09a51c8).
i already see the code of thies post http://forums.adafruit.com/viewtopic.php?f=15&t=21963&p=115115 but i cant get the right PH, i have bufer solutions of 4 7 and 9.
Tanks,
Mrt
Arduino PH Help!!!
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6 posts • Page 1 of 1
Re: Arduino PH Help!!!
by john444 » Sat May 26, 2012 1:57 pm
Hi Mrt,
How far off are your measurements?
Andyx mentions temperature correction. Are you doing that also?
It would be great to see your setup. Can you post a photo?
John
How far off are your measurements?
Andyx mentions temperature correction. Are you doing that also?
It would be great to see your setup. Can you post a photo?
John
- john444
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Re: Arduino PH Help!!!
by mrt » Sat May 26, 2012 4:49 pm
My setup is the same that Andyx only my DHT sensor is the DHT11.
My measurements are very unstable and are not right
My measurements are very unstable and are not right
- mrt
- Posts: 2
- Joined: Sat May 26, 2012 12:45 pm
Re: Arduino PH Help!!!
by john444 » Sat May 26, 2012 5:11 pm
Mrt,
See what happens after you put a 0.1-uF cap from Arduino's A0 input pin to GND.
That is where the pH interface is connected to, right?
Also, you might ground the other un-used analog pins.
See what happens after you put a 0.1-uF cap from Arduino's A0 input pin to GND.
That is where the pH interface is connected to, right?
Also, you might ground the other un-used analog pins.
- john444
- Posts: 411
- Joined: Sun Mar 04, 2012 1:42 pm
- Location: Claremore, Ok
6 posts • Page 1 of 1
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