reef-pi :: An opensource reef tank controller based on Raspberry Pi.

[Ranjib]

Update on the ph board driver development. Last night I applied my pico tanks calibration, calibration was done with Hanna ph checker readings against the same tank water at same point in time, twice. So it was a two point calibration. I applied it using API( command line, since UI support is nit there yet) . The results are looking promising after the probe ran for about 15 hours now. Finally I can see the ph cycle of both tanks are indeed very similar..

I’ll keep this running, and report back the results. Unless there are any surprises, I’m waiting from @Zekth or @Michael Lane to make the UI changes to support calibration and we are good for a beta build that you all can test out.

 

[Bigtrout]

Update on the ph board driver development. Last night I applied my pico tanks calibration, calibration was done with Hanna ph checker readings against the same tank water at same point in time, twice. So it was a two point calibration. I applied it using API( command line, since UI support is nit there yet) . The results are looking promising after the probe ran for about 15 hours now. Finally I can see the ph cycle of both tanks are indeed very similar..

I’ll keep this running, and report back the results. Unless there are any surprises, I’m waiting from @Zekth or @Michael Lane to make the UI changes to support calibration and we are good for a beta build that you all can test out.

Can I super duper like this!

Guess its time to get a ph probe on the way!!!

 

[Ranjib]

Can I super duper like this!

Guess its time to get a ph probe on the way!!!

Do you have test build or you plan to update your current build ? I can share the steps to configure calibration, just let me know when your probe is in.

 

[Bigtrout]

Im running 2.3, but not scared to update...i dont have the test build but id love to help test...

Ill probably order a probe this week...anyone like the pinpoint marine probes?

A freshwater guy with a ph probe, will I have to order a tux and look sophisticated?(read the cartoon a dozen or so posts up)

 

[theatrus]

Im running 2.3, but not scared to update...i dont have the test build but id love to help test...

Ill probably order a probe this week...anyone like the pinpoint marine probes?

A freshwater guy with a ph probe, will I have to order a tux and look sophisticated?(read the cartoon a dozen or so posts up)

The Pinpoint probes are a decent value. I also had good luck with the Extech probes but they have a very short cable.

 

[theatrus]

Update on the ph board driver development. Last night I applied my pico tanks calibration, calibration was done with Hanna ph checker readings against the same tank water at same point in time, twice. So it was a two point calibration. I applied it using API( command line, since UI support is nit there yet) . The results are looking promising after the probe ran for about 15 hours now. Finally I can see the ph cycle of both tanks are indeed very similar..

I’ll keep this running, and report back the results. Unless there are any surprises, I’m waiting from @Zekth or @Michael Lane to make the UI changes to support calibration and we are good for a beta build that you all can test out.

Looks good.

I’m also curious how much of the response time of the probes is due to the probe type - are they different types?

 

[Michael Lane]

Update on the ph board driver development. Last night I applied my pico tanks calibration, calibration was done with Hanna ph checker readings against the same tank water at same point in time, twice. So it was a two point calibration. I applied it using API( command line, since UI support is nit there yet) . The results are looking promising after the probe ran for about 15 hours now. Finally I can see the ph cycle of both tanks are indeed very similar..

I’ll keep this running, and report back the results. Unless there are any surprises, I’m waiting from @Zekth or @Michael Lane to make the UI changes to support calibration and we are good for a beta build that you all can test out.

Nice work on the pH drivers! I've still probably got another week or 2 until I have some free time to spend on programming, but I'm happy to help modify the pH calibration to work with the new drivers.

 

[Ranjib]

Looks good.

I’m also curious how much of the response time of the probes is due to the probe type - are they different types?

I don’t know yet, I’m polling the probes at 15s to 1m interval, I couldn’t notice the difference .

I think both Milwaukee and American marine probes are good, I’ll set up more rigorous comparison in future, now that these boards are working :-)

 

[Ranjib]

Im running 2.3, but not scared to update...i dont have the test build but id love to help test...

Ill probably order a probe this week...anyone like the pinpoint marine probes?

A freshwater guy with a ph probe, will I have to order a tux and look sophisticated?(read the cartoon a dozen or so posts up)

I like my pinpoint marine probe, but not sure how it compares to the Milwaukee or scientific American probe in terms of accuracy and precision. I can see the overall daily ph cycle . My calibration are all against Hanna ph checker

 

[DirtDiggler2823]

The Pinpoint probes are a decent value. I also had good luck with the Extech probes but they have a very short cable.

I'm ordering a BRS double junction pH probe. Do you anticipate any problems with that?

 

[Jean-Pierre Renaud]

Hey guys, i have a weird problem,

when i use my PC or latest ipad or iphone, it works perfectly,
on my old Ipad mini and Samsung Galaxy tab 2 i only see a white page, nothing shows.

any idea ?

 

[Ranjib]

I'm ordering a BRS double junction pH probe. Do you anticipate any problems with that?

No, should be fine.

 

[Ranjib]

Hey guys, i have a weird problem,

when i use my PC or latest ipad or iphone, it works perfectly,
on my old Ipad mini and Samsung Galaxy tab 2 i only see a white page, nothing shows.

any idea ?

what browser you are using? Try installing latest google chrome and see it works

 

[Jean-Pierre Renaud]

what browser you are using? Try installing latest google chrome and see it works

i try safari, chrome and opera, all doing the same on the galaxy tab 2 and the ipad mini 1st gen.

it works perfect on my ipad pro and all my phones.

ios 9 is not supported by chrome anymore, i had to install an old version,

even then it's hot showing

 

[T-MIKE]

Hi,

Just fired up my Pi Zero and is trying to get everything setup for my new light that's coming tomorrow. Do you happen to know if those cheap Chinese lights use PWM or an analog signal?

One other thing, the camera module appears to be working as I tried the interval shots and it displays the picture but whenever you click on the camera tab, it says "404 page not found | HTTP 404".

 

[Michael Lane]

Hi,

Just fired up my Pi Zero and is trying to get everything setup for my new light that's coming tomorrow. Do you happen to know if those cheap Chinese lights use PWM or an analog signal?

One other thing, the camera module appears to be working as I tried the interval shots and it displays the picture but whenever you click on the camera tab, it says "404 page not found | HTTP 404".

Those lights are usually analog control, but I may be able to confirm if you post the specific one. Your protoboard looks pretty good, so you could probably make an adapter circuit. You can smooth and amplify a pwm signal to make reef-pi work with analog lights. I have a block diagram and circuit you can reference if you'd like.

 

[T-MIKE]

Those lights are usually analog control, but I may be able to confirm if you post the specific one. Your protoboard looks pretty good, so you could probably make an adapter circuit. You can smooth and amplify a pwm signal to make reef-pi work with analog lights. I have a block diagram and circuit you can reference if you'd like.

Thanks for your reply. This is the one I got: https://www.amazon.com/gp/product/B078RZGYKP/ref=ppx_yo_dt_b_asin_title_o01_s01?ie=UTF8&psc=1

There are 3 little fets on there for the 2 channels and then one for controlling an UV light for my webcam so it can see in the dark.

I like your pwm converter but I was planning on using a simple RC circuit. Will that not work?

 

[Michael Lane]

Thanks for your reply. This is the one I got: https://www.amazon.com/gp/product/B078RZGYKP/ref=ppx_yo_dt_b_asin_title_o01_s01?ie=UTF8&psc=1

There are 3 little fets on there for the 2 channels and then one for controlling an UV light for my webcam so it can see in the dark.

I like your pwm converter but I was planning on using a simple RC circuit. Will that not work?

That almost certainly looks like an analog driven light. An RC circuit amplified to 0-10v should work just fine. That's the majority of what my converter is doing. RC alone won't be sufficient since rpi is 3.3v, but the addition of an op amp can solve that problem.

 

[T-MIKE]

I see what you are saying now. Thanks for the tip!

I'll definately post pictures so others will know. I think it's one of the cheapest 165W lights on Amazon.

 

[T-MIKE]

Repeated...oops.