pH probe with atlas carrier board

[disaster999]

Duly noted. I’ll update the guides whenever I find some time. They have not been updated for quite some time.

You had 4 + years of finding time to update your guides but you still havent.

I too fell victim to your confusing guide and spent an entire month troubleshooting on my own since you seem to have abandoned reef-pi completely and this community seem to have lost interest.

 

[disaster999]

Even Atlas Scientific said your guide is wrong.

I'm sorry to hear that.
Unfortunately, the Adafruit guide is incorrect.

If you had simply bought our pH kit, the equipment would have worked perfectly.
The carrier board the pH circuit sits on provides electrical isolation and removes the need for a perfboard.
If you put it in your enclosure, you would be done.

I need a clean power source and good isolation:
Please see page 7 of the EZO-pH datasheet.
https://files.atlas-scientific.com/pH_EZO_Datasheet.pdf

Atlas Scientific is very transparent about these issues and how to resolve them.
We tell you that electrical isolation is very important.
We don't tell you that at the back of the datasheet where no one looks.
We tell you on page 7.

Don't want to buy one from us.
That's fine.
On page 8, we show you how to make one from scratch.

Aside from moving the isolator and pH circuit away from the raspberry pi and possibly installing that circuit inside a metal box
That's not your problem at all.
Please see page 7 of the EZO-pH datasheet.
You will see it says NEVER use Perfboards or Protoboards
https://files.atlas-scientific.com/pH_EZO_Datasheet.pdf

You are using a Perfboard.
I understand that you trusted the Adafruit guide.
They are a good source of info.
Unfortunately, this time they got it wrong.

Don't worry, it can be fixed.
And you don't need to buy anything.
Remove the pH circuit and soak your perfboard in alcohol for 30 min.
Brush it lightly with a soft toothbrush.
YOU MUST REMOVE ALL THE FLUX RESIDUE FROM YOUR PERFBOARD.
Flux residue is incompatible with chemical sensors.

But will that fix my problem?
YES.
We have known about this issue for 15 years.
I'm very sorry they made an incorrect guide.

Adafruit is located down the street from us.
We buy their CPU modules for some of our products.
Like this: https://atlas-scientific.com/product/bare-bones-wi-fi-aquaponics-kit/

Adafruit has never reached out to us.
Not once.

Let me know if you need any more help.

 

[Sral]

You had 4 + years of finding time to update your guides but you still havent.

I too fell victim to your confusing guide and spent an entire month troubleshooting on my own since you seem to have abandoned reef-pi completely and this community seem to have lost interest.

TBH, this is not helping.

ReefPi is and has been a side project that nobody involved is getting payed for and that concerns nobody that is of any truly personal concern to any of the maintainers. If Ranjib falls of the stairs or needs help moving, none of us is personally close enough to help him.

So I'd suggest to pay some attention to that and change the language surrounding this. Applying pressure takes the only motivating thing out of this: joy.


If you are truly interested, you are free to make your own guide, or put together some changes that Ranjib can drop into the guide with less effort.

 

[disaster999]

When you have wasted over 2 months trying to find answers, spending over $100 on hardware and hours upon hours, days upon days of self research and diagnosing, chatting with AI and ended up reaching out to EZO on their pH circuit just to tell you that this guide is completed wrong... you you bet your butt strong unsatisfactory wording will be used.

I dont think I have to worry about his motivation on this, its clearly lost 4+ years ago else the guide would be update.