DIY pH Meter

  • We are currently upgrading MFK. thanks! -neo
I don't understand why build it if you can buy one for cheaper....
 
portabuddy;809199; said:
thats not the design i was talking about it used a diffent amplification, but the most of the board was the same, but hey your dealing with minute voltages produced my the ph so there is only so many ways that you can go about doing it, but having the screen you are talking about would be interesting. looking forward to how this works out.

I will try to find the scimatics that i "was" going to be using.
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man portabuddy i barely noticed you without the i see you avatar! but oh well! this one looks pretty awsome!


i would personally by my own unless this one doesnt run out! in which case if i understood any of this i would because the pin point ones are like $80! how much do the parts cost?
 
It works! There was a problem with the board, so I had to put an air wire. The capacitor I put on the input is too big, so it takes a while to calibrate. I've put pics and the schematics up. I still need to get a clamp so that I can put it on my tank though.

Brandon

It works.jpg

board.jpg

pH Amplifier.jpg
 
So its Squiggle squiggle triangle squiggle....:nilly:....cool after i finish the nuetron bomb i was building i will start on one for me.
 
Greenaveli;844354; said:
So its Squiggle squiggle triangle squiggle....:nilly:....cool after i finish the nuetron bomb i was building i will start on one for me.
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NO...NO...No...Your going to blow yourself up, It;s Curved - squiggly - curved - triangle...geeez.

Nice job cbfreder, are you going to use it as a permanant or removable.

Dr Joe

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Yeah guys. It's squig, squig, plate, triangle. BTW, you're nerds, too. Think about what you're doing right now.

I dunno, I went to two HW stores and couldn't find an acceptable clamp. I'll have to look more though. I am sure it will be a permanent member of my tank once I move.

Brandon
PS first circuit I ever built correctly on the first try.
 
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