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

stefanm · Sep 17, 2020

theatrus said:
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 · Sep 17, 2020

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

Ranjib · Sep 17, 2020

Yov said:
@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 · Sep 17, 2020

Ranjib said:
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 · Sep 17, 2020

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

Ranjib · Sep 17, 2020

Yov said:
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 · Sep 17, 2020

Yov said:
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 · Sep 17, 2020

Yov said:
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 · Sep 17, 2020

Yov said:
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 · Sep 17, 2020

Ranjib said:
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 · Sep 17, 2020

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

Amazon product ASIN B01JP9BQSG
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 · Sep 17, 2020

baendres said:
I am running these temperature probes that I ordered from Amazon.

Amazon product ASIN B01JP9BQSG
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 ASIN B07QJ8B13T
just as important. These are the connectors I have. SiYear 3-Pole 3.5mm Stereo... Amazon product ASIN B07WZT7QGL
then solder well. They have been running for over 1 year.

stefanm · Sep 17, 2020

baendres said:
I am running these temperature probes that I ordered from Amazon.

Amazon product ASIN B01JP9BQSG
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 · Sep 17, 2020

stefanm said:
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 · Sep 17, 2020

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 · Sep 17, 2020

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 · Sep 17, 2020

acanfor420 said:
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 · Sep 17, 2020

pais said:
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 · Sep 17, 2020

acanfor420 said:
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.