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

[stefanm]

Measure everything. Does the input stay high? Does the power stay up? Is the coil on the relay receiving voltage?

I just checked that the grounds are tied and they are, so wiring is correct.

To test it I'll need to remove everything, going to a difficult one..

 

[Yov]

@Ranjib is there any way to bypass the 2 point calibration for sensors configured as PH sensor in this update?

 

[Ranjib]

@Ranjib is there any way to bypass the 2 point calibration for sensors configured as PH sensor in this update?

What do you mean? You can always run ph probe without any calibration. Can you elaborate a bit?

 

[Yov]

What do you mean? You can always run ph probe without any calibration. Can you elaborate a bit?

i use the PH tab for a humidity sensor. ( sht31d ) but the humidity in the tank says 100% when in fact it is 80% so its is of by 20%! i like to adjust this so it is whitin 5% correct.

Edit: Second Calibration problem XD:

 

[Yov]

Also Temp isue with occilating houres nog fixed in 3.5? :( or do i need to purge something first?

 

[Ranjib]

i use the PH tab for a humidity sensor. ( sht31d ) but the humidity in the tank says 100% when in fact it is 80% so its is of by 20%! i like to adjust this so it is whitin 5% correct.

Edit: Second Calibration problem XD:

Ah. i think this is a different issue. SHT31D driver is not best. Right now it only reads the sensor value, but if i recall correctly we have run the heater (theres a tiny heater to get rid of water vapor) periodically in the background that i have not implemented yet. Does your reading change if you update the check frequency to something longer (say 5 min).
I dont know whats happening with the temp sensor reading, there are couple of changes we made... but that should not effect it.

 

[Ranjib]

i use the PH tab for a humidity sensor. ( sht31d ) but the humidity in the tank says 100% when in fact it is 80% so its is of by 20%! i like to adjust this so it is whitin 5% correct.

Edit: Second Calibration problem XD:

This is bug. Since this module was initially built for ph, it was restricted to take values within 0-14. We have to change it. I'll file a bug and get it fixed by next release.

Thank you so much for taking the time to run it and letting us know all the details.

 

[Ranjib]

Also Temp isue with occilating houres nog fixed in 3.5? :( or do i need to purge something first?

Dont purge. Let it run for some time and see if it settles down ..

 

[elysics]

Also Temp isue with occilating houres nog fixed in 3.5? :( or do i need to purge something first?

Can confirm, that bug still exists. I can provoke it by going the Configuration->Admin->reload route. Usually goes away after a few hours for me.

Edit: Happens in the Health graph too, by the way. Not sure if i noticed or mentioned that before.

 

[stefanm]

Can you share a photo of the entire setup ? I think it’s an wiring issue

Got it sorted thanks, it turned out the v+ wire was loose, I had desoldered the pin header and soldered the wires through the holes, I had damaged the v+ solder pad, I managed to get the wire soldered on the top pad, all working properly now, I also washed off any excess flux and ran a blade between my solders, I call it a bikini wax incase of a stray wire.

 

[baendres]

I am running these temperature probes that I ordered from Amazon.

Amazon product

they are lasting no more than two months until things go haywire and I start getting the PI showing way off temperatures (it is currently showing 32*) and if i go to the temp probe section of reef pi i get this error:

{"error":"open /sys/bus/w1/devices/28-011453842daa/w1_slave: no such file or directory"} | HTTP 404

the last two times this has happened I just solder an end on a new probe and things start working as expected but this is getting crazy to keep replacing it and I am heading out of town Saturday morning and of course the probe just took a **** after I did a water change.

Any suggestions on what to do? I was originally going to run three probes in my system (display, sump and stand) but I have only put the display one in so far since I keep having problems.

Thanks!

 

[Mikeneedsahobby]

I am running these temperature probes that I ordered from Amazon.

Amazon product

they are lasting no more than two months until things go haywire and I start getting the PI showing way off temperatures (it is currently showing 32*) and if i go to the temp probe section of reef pi i get this error:

{"error":"open /sys/bus/w1/devices/28-011453842daa/w1_slave: no such file or directory"} | HTTP 404

the last two times this has happened I just solder an end on a new probe and things start working as expected but this is getting crazy to keep replacing it and I am heading out of town Saturday morning and of course the probe just took a **** after I did a water change.

Any suggestions on what to do? I was originally going to run three probes in my system (display, sump and stand) but I have only put the display one in so far since I keep having problems.

Thanks!

These are the probes I use. T-PRO DS18b20 Waterproof... Amazon product

just as important. These are the connectors I have. SiYear 3-Pole 3.5mm Stereo... Amazon product

then solder well. They have been running for over 1 year.

 

[stefanm]

I am running these temperature probes that I ordered from Amazon.

Amazon product

they are lasting no more than two months until things go haywire and I start getting the PI showing way off temperatures (it is currently showing 32*) and if i go to the temp probe section of reef pi i get this error:

{"error":"open /sys/bus/w1/devices/28-011453842daa/w1_slave: no such file or directory"} | HTTP 404

the last two times this has happened I just solder an end on a new probe and things start working as expected but this is getting crazy to keep replacing it and I am heading out of town Saturday morning and of course the probe just took a **** after I did a water change.

Any suggestions on what to do? I was originally going to run three probes in my system (display, sump and stand) but I have only put the display one in so far since I keep having problems.

Thanks!

Are you encapsulating them, either in silicone or epoxy works well, mine work well almost 2 years in salt water without any real issues.

 

[Mikeneedsahobby]

Are you encapsulating them, either in silicone or epoxy works well, mine work well almost 2 years in salt water without any real issues.

Yes. This works too. Encapsulated in epoxy my first lower cost non water proof probe lasted a long time. Recently failed after dropping connector end in salt water several times. And connector corroded.

 

[pais]

Hi , I'm wondering if in the newer versions there's a way to manage light intensity based on other sensors. For example I put a temp sensor on a led lamp: if it gets too hot I would to reduce light decreasing pwm. Actually I'm running version 3.2 and have no problems, just wonder if that's possible in some manner ? Thanks

 

[acanfor420]

hello
new to the hobby and have looked at the apex system setup but its out of the question.
Been trying to read thru the multi hundred pages. does get over whelming
Is the a shopping list of items needed? like what probes are the best? what connectors are best?
is there a compiled shopping list?

 

[Mikeneedsahobby]

hello
new to the hobby and have looked at the apex system setup but its out of the question.
Been trying to read thru the multi hundred pages. does get over whelming
Is the a shopping list of items needed? like what probes are the best? what connectors are best?
is there a compiled shopping list?

My suggestion is to find a build thread of someone that has similar goals and skills as you.

there are some general lists out there. Ranjib’s GitHub site has these.https://reef-pi.github.io/

he shows how to build one from scratch. Keep in mind that there are people now building subassemblies and even plug and play units now. Also there are usually 10 ways to do everything so there are choices. This makes it harder but also more flexible.

after reading someone’s build thread. Start your own and getting moving. When you have questions ask. Maybe even tag the author of the build thread you read and make them your mentor. I had a few and it was so beneficial to have them.

 

[Ranjib]

Hi , I'm wondering if in the newer versions there's a way to manage light intensity based on other sensors. For example I put a temp sensor on a led lamp: if it gets too hot I would to reduce light decreasing pwm. Actually I'm running version 3.2 and have no problems, just wonder if that's possible in some manner ? Thanks

Not exactly. You can turn it off directly, since any pwm output can be an outlet, but nothing that will make it more fine grained % based. This will be some work, to come up with a control mechanism that instead of a boolean on/off , take a more nominal approach (% of fractional). The design has to address both control mechanism as well as what part of that algorithm should be customizable by end users.
I have done some work on PID controller, but definitely looking for more ideas. Please let us know if you have some suggestions

 

[Ranjib]

hello
new to the hobby and have looked at the apex system setup but its out of the question.
Been trying to read thru the multi hundred pages. does get over whelming
Is the a shopping list of items needed? like what probes are the best? what connectors are best?
is there a compiled shopping list?

Dont read this thread to build your controller. As mentioned in the very first post, go through the guides, that will give you some idea, then start a thread if you have specific questions.

 

[AbjectMaelstroM]

Huge thanks to @Ranjib and @Michael Lane for their continued contribution to this project and the hobby.

The real MVPs.