Reef-Pi pH-ORP adapter

madeinmanado · Jan 15, 2019

I am going to add reef-pi + ph sensors (this threat) to my 3000 liters tanks as soon as the ph driver is available

tankaholic · Jan 16, 2019

madeinmanado said:
I am going to add reef-pi + ph sensors (this threat) to my 3000 liters tanks as soon as the ph driver is available

Can you PM me price if ya have any boards left...

madeinmanado · Jan 16, 2019

tankaholic said:
Can you PM me price if ya have any boards left...

I am waiting first for a workable reef-pi driver before buying the ph components.
Before I read this threat, I am thinking to buy the Atlas Sci ph. But I need at least 6 probes for my farm...the total price is going high.
All my equipments are DIY (tanks,skimmers,ca reactor,electronics)

sector9 · Jan 20, 2019

Ranjib said:
the ph board driver is almost there: https://github.com/reef-pi/drivers/pull/10

I noticed the pull request is closed. Does that mean there is a way to try out the pH sensor boards?

Ranjib · Jan 20, 2019

sector9 said:
I noticed the pull request is closed. Does that mean there is a way to try out the pH sensor boards?

Not yet, I have to do the ui and some backend work. This is just the driver

Diamond1 · Jan 21, 2019

Ranjib said:
Not yet, I have to do the ui and some backend work. This is just the driver

This is exciting. I have everything ready to go just waiting on the software end.
I wish I knew the programing end of things so I could lend a hand.

Ranjib · Jan 21, 2019

Diamond1 said:
This is exciting. I have everything ready to go just waiting on the software end.
I wish I knew the programing end of things so I could lend a hand.

It will take some time (couple of weeks to a month ) , due to all the work required and also some chores with my tanks... but it’s coming . I am very excited about this, as this is the first custom ph board for reef-pi :-) .

Diamond1 · Jan 21, 2019

Ranjib said:
It will take some time (couple of weeks to a month ) , due to all the work required and also some chores with my tanks... but it’s coming . I am very excited about this, as this is the first custom ph board for reef-pi :) .

Take your time.
This is a big step forward and between you and Roberto your efforts have resulted in a very price friendly ph option.

Bigtrout · Jan 21, 2019

Ranjib said:
Not yet, I have to do the ui and some backend work. This is just the driver

I am getting my ph board this week and as soon as I get a probe and cal solutions, im willing to do any testing needed.

Ranjib · Feb 10, 2019

For those who are following this, we are almost in the last bits for supporting this driver. The raw driver code is in master (3.0.0-alpha) and we are now working on the conversion logic (milivolt to ph value ) and calibration support.

machine932 · May 16, 2019

Can I control PH with the Reef-Pi. basically can I automate my PH up and down using this system. I see a lot of talk about monitoring PH not much on dosing. thanks for the help

machine932 · May 16, 2019

Can I control PH with the Reef-Pi. basically can I automate my PH up and down using this system. I see a lot of talk about monitoring PH not much on dosing. thanks for the help

Ranjib · May 16, 2019

machine932 said:
Can I control PH with the Reef-Pi. basically can I automate my PH up and down using this system. I see a lot of talk about monitoring PH not much on dosing. thanks for the help

Current,y we only support monitoring ph, and not taking an action based on it. We do have support for dosing , so you can use the ph graph to decide your dosing regimen

machine932 · May 16, 2019

Ranjib said:
Current,y we only support monitoring ph, and not taking an action based on it. We do have support for dosing , so you can use the ph graph to decide your dosing regimen

Thanks for the quick reply, it is for a hydroponic system. I do have an auto dosing system that will PH up or down not both. I cant view it remotely as well.

Ranjib · May 26, 2019

Let us know if you have any more question or need any other help.
godspeed

sector9 · May 28, 2019

So my pH probe goes down from 930p to 8a, which is coincidentally the same time my fuge light is on. Do I need to shield my board?

Ranjib · May 28, 2019

sector9 said:
So my pH probe goes down from 930p to 8a, which is coincidentally the same time my fuge light is on. Do I need to shield my board?

The board has shield already (galvanic isolation i mean). Lets run calibration first. Do you have any reference solution? or plan to use another test kit?

Bigtrout · May 28, 2019

sector9 said:
So my pH probe goes down from 930p to 8a, which is coincidentally the same time my fuge light is on. Do I need to shield my board?

Where and how is the ph probe cable run? If its run very close to and parallel to something with current running through it, maybe picking up inductance as well

sector9 · Jun 19, 2019

Ranjib said:
The board has shield already (galvanic isolation i mean). Lets run calibration first. Do you have any reference solution? or plan to use another test kit?

Bigtrout said:
Where and how is the ph probe cable run? If its run very close to and parallel to something with current running through it, maybe picking up inductance as well

Still having issues with my probe. I did calibrate it and I checked the routing of the probe cable to be sure it was away from the other electronics. Here is what my probe output is doing:

The raw value near pH of 12 corresponds to -32768 and the pH of 1.7 corresponds to 32767. Obviously the only readings I trust are the ones pH 8-9. It is still very diurnal (pH reads correctly during daytime hours but is screwed up either high or low at night). Any other suggestions?

Ranjib · Jun 19, 2019

We have to come up with a strategy to at least pin point if the issue is with the probe or the board. We know the software works. Do you have a calibration solution for prolonged use (say couple of days) that we can use to do this?