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

Freccialata · Mar 4, 2020

NeonRabbit221B said:
Did you enable 1 wire?

Try entering this in the command:
lsmod | grep -i w1_

Hard to tell in the picture but you should be hooked up to 3v3, ground and GPIO 4 with a 4.7k between power and pin 4.

1 wire is enabled... and there is a 4.7K 1/4w resistor that connects pin1 (3.3v) and pin4 (gpio2).

NeonRabbit221B · Mar 4, 2020

1 wire communicates through gpio 4 not gpio 2. Sorry previous post was confusing. I never use physical pin references lol

Ryan Turner · Mar 4, 2020

Freccialata said:
I have bought a proto board on Amazon and it will arrive in the next days.
In the meanwhile I can’t see the temperature sensor in the temperature board.
What’s wrong???

where did you get your sensors? I bought some from amazon that said they were ds18b 1wire. They were not.... I bought the ones @Michael Lane suggested that looked identical to the ones I ordered and those worked. It took me a a week to figure that out.

Ranjib · Mar 4, 2020

Bigtrout said:
Seeing this post, I decided tp try and delete my test ATO. You are correct. It will not let me delete my test ATO. I can disable it but not delete it.

I'll check this tonight and get it fixed. I am aware of this, but was not able to pay attention due to other things...

Ranjib · Mar 4, 2020

NeonRabbit221B said:
1 wire communicates through gpio 4 not gpio 2. Sorry previous post was confusing. I never use physical pin references lol

Something to remember is that you can configure it to use other GPIO via dtoverlay (/boot/config.txt)

Ranjib · Mar 4, 2020

Schreiber said:
Hmm, interesting. Seems to be a bug introduced with the 3.2 release. @AbjectMaelstroM also reported the same issue on the 7th, but i couldn't find any responses addressing it.

@Ranjib , any ideas?

Its a bug for sure. Give me a day and i'll get this sorted.

robbyg · Mar 4, 2020

Guys I have only gone through about 10 pages of the 700+ pages and I have to say I am amazed at the work and dedication put in. My only question is do you guys have a companion website for this thread? If not you need one. There is just to much data on this thread. People need a place where they can see just the info on what is the current state of the project in terms of hardware and software and what they need to buy and who sells what.

Great work people..

Ranjib · Mar 4, 2020

robbyg said:
Guys I have only gone through about 10 pages of the 700+ pages and I have to say I am amazed at the work and dedication put in. My only question is do you guys have a companion website for this thread? If not you need one. There is just to much data on this thread. People need a place where they can see just the info on what is the current state of the project in terms of hardware and software and what they need to buy and who sells what.

Great work people..

Thank you for the kind words, its means a lot to us.

The first post in this thread has links to the official website (http://reef-pi.com) and the guides at adafruit. They'll always be little out of date compared to this thread, as its constantly being updated with community discussion, various bug reports , ongoing development and often time random things :0-)

Let us know if we could improve the docs,

Freccialata · Mar 4, 2020

NeonRabbit221B said:
1 wire communicates through gpio 4 not gpio 2. Sorry previous post was confusing. I never use physical pin references lol

I was wrong too..... gpio2 in pin3!!!

Freccialata · Mar 4, 2020

Ryan Turner said:
where did you get your sensors? I bought some from amazon that said they were ds18b 1wire. They were not.... I bought the ones @Michael Lane suggested that looked identical to the ones I ordered and those worked. It took me a a week to figure that out.

I got them from Amazon (italy), but the pack arrived from germany.
3 metres (118.11 in).

NeonRabbit221B · Mar 4, 2020

General wiring question and I googled for 10 minutes and could find a reasoning. I have a couple 5V relay boards and a handful of 1 ft extension cords that I was going to strip and wire in to the 5V relay for a small reef-pi build.
Knowing that Black is hot, is this the wire I use for the terminals similar to a two prong? I don't like dying and I just happened to have these materials on hand. I had the black wire stripped from a previous project so I assumed I did some amount of research on it but can't find my source on why you use the hot wire.

Bigtrout · Mar 4, 2020

NeonRabbit221B said:
General wiring question and I googled for 10 minutes and could find a reasoning. I have a couple 5V relay boards and a handful of 1 ft extension cords that I was going to strip and wire in to the 5V relay for a small reef-pi build.
Knowing that Black is hot, is this the wire I use for the terminals similar to a two prong? I don't like dying and I just happened to have these materials on hand. I had the black wire stripped from a previous project so I assumed I did some amount of research on it but can't find my source on why you use the hot wire.

When you wire a 120v outlet thru the 5v relay, you always run the hot thru the relay. You never switch either the neutral(white) or ground(green).
There are safety reasons for this because both these wires are ground paths for the 120v.

Ryan Turner · Mar 4, 2020

Freccialata said:
I got them from Amazon (italy), but the pack arrived from germany.
3 metres (118.11 in).

hmm ok. food for thought if you cant get them to work when everything seems wired/configured correctly it could be the sensor itself dont rule that out.

robsworld78 · Mar 4, 2020

Zaphod said:
Maybe a Cat6e/a patch cord (8 wires and a shield). Or, Cat7 Patch cord. 6ft cords start at around $5 US With that said, The panel mount Cat6/7 RJ45's can get expensive unless you use Keystone types which require a standard Keystone panel mount.

Amazon product

Thanks I thought about that too but parts were getting expensive. I have another idea that I'll probably drop on you guys a little later.

Bigtrout · Mar 4, 2020

robsworld78 said:
Thanks I thought about that too but parts were getting expensive. I have another idea that I'll probably drop on you guys a little later.

Does that idea happen to be usb 3.0 connectors and cables with the 9 pins?

robsworld78 · Mar 4, 2020

Bigtrout said:
Does that idea happen to be usb 3.0 connectors and cables with the 9 pins?

No but now it might. :)

Des Westcott · Mar 5, 2020

Bigtrout said:
When you wire a 120v outlet thru the 5v relay, you always run the hot thru the relay. You never switch either the neutral(white) or ground(green).
There are safety reasons for this because both these wires are ground paths for the 120v.

Something to remember when wiring Alternating Current (AC) - 120V in the USA, 220V where I live. The positive and negative (Hot and Negative) switch polarity according to the Frequency (Hertz value). 60Hz here and (I think??) 50Hz in the USA. So actually, the positive and negative connections don't really matter as these are switching polarity between themselves 50 / 60 times a second.

HOWEVER, it is good practice to adhere to a convention so that anyone else that comes and works on your stuff can easily figure out how the circuits are made up.

The one NON-NEGOTIABLE is the Earth / Ground wire. The must only be joined to other Earths and to Earth points / connections

Ranjib · Mar 5, 2020

Hive minds,
I just published reef-pi 3.3. Its a small release with an important bugfix related to ATO deletion. Other than this bugfix, this release also brings in @Michael Lane 's work on improved driver configuration UI and associated validation. Thank you @Michael Lane for your continued help. This was Michael's first significant go code (if i recall correctly), so I am super pumped about that as well :-). Please give it a try and let us know.

Release builds can be found in usual location: https://github.com/reef-pi/reef-pi/releases/tag/3.3

cheers