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

Brad Cox · Sep 4, 2017

Ranjib said:
Bummer. I'll bring back the high state config. Meanwhile, you can still use the equipments tab right?Its just the buttons means opposite , when you click off, it should turn on equipment and when you click on, it should turn off. Am I right on this?

Idk what pins the equipment is tied to. When i add a outlet under system it doesnt show up under equipment.
My relay wont do anything. Ive tried putting it to the ground pin as well as the 5 volt pin and it dont change states.

Ranjib · Sep 4, 2017

Brad Cox said:
Idk what pins the equipment is tied to. When i add a outlet under system it doesnt show up under equipment.
My relay wont do anything. Ive tried putting it to the ground pin as well as the 5 volt pin and it dont change states.

You have to add equipment after you add outlets. While creating a new equipment (under equipments tab), you should be able to choose the outlet. Its this outlet that will decide which pin is associated with the equipment

Brad Cox · Sep 4, 2017

Ranjib said:
You have to add equipment after you add outlets. While creating a new equipment (under equipments tab), you should be able to choose the outlet. Its this outlet that will decide which pin is associated with the equipment

Gotcha!

Well with a multimeter i cant read a closure across the pins of the relay. But when i plug in the power cord for the relays they do work.

This must be a scr thing?

Ehen i take the sensor out of the water it comes on and when i put it in the water it goes off. I have it set to 1 sec. for testing.

What should i set it at for the real world?

Ranjib · Sep 4, 2017

To me 5 minutes interval is good enough. We have limitations from ds18b20 probe (can not be read multiple time within a single second) as well as adafruit.io (only 10 or so metric per minute) . And I dont think we need temperature per second or even per minute. At least my observation was tank temperature does vary, but lot slowly... I have shared my tank's trend in this thread, for reference. My recommendation will be 5 minute interval, but you can dial it down to 1 as well, if you want

Brad Cox · Sep 4, 2017

Ranjib said:
To me 5 minutes interval is good enough. We have limitations from ds18b20 probe (can not be read multiple time within a single second) as well as adafruit.io (only 10 or so metric per minute) . And I dont think we need temperature per second or even per minute. At least my observation was tank temperature does vary, but lot slowly... I have shared my tank's trend in this thread, for reference. My recommendation will be 5 minute interval, but you can dial it down to 1 as well, if you want

Do you know if and when the dac for the lights will come?

njtiger aquariums · Sep 4, 2017

man a lot has changed to this since I last checked up on this. Good work guys its looking great.

Ranjib · Sep 4, 2017

Brad Cox said:
Do you know if and when the dac for the lights will come?

I have got the initial driver code in place : https://github.com/reef-pi/reef-pi/blob/master/controller/utils/dac.go
I still have to work on some API and finally the UI bits on this. Because each breakout board only support 1 channel, there will be more UI work for dac based lighting (users have to specify the DAC i2c address for each channel). Its not difficult, just bit tedious, and I have to spend some time on it. For what its worth, I want to get it done as part of 1.0 release,

Brad Cox · Sep 4, 2017

Ranjib said:
I have got the initial driver code in place : https://github.com/reef-pi/reef-pi/blob/master/controller/utils/dac.go
I still have to work on some API and finally the UI bits on this. Because each breakout board only support 1 channel, there will be more UI work for dac based lighting (users have to specify the DAC i2c address for each channel). Its not difficult, just bit tedious, and I have to spend some time on it. For what its worth, I want to get it done as part of 1.0 release,

Gotcha.

Thats what im waiting on since the ato is working now.

Is there a converter they make that will work in its place?

Ranjib · Sep 4, 2017

Brad Cox said:
Gotcha.

Thats what im waiting on since the ato is working now.

Is there a converter they make that will work in its place?

Thats a very good question, i do not have answer to that, but I think there is. We need some electronics guru's help here :-/ . Meanwhile, let me google

Ranjib · Sep 4, 2017

Brad Cox said:
Gotcha.

Thats what im waiting on since the ato is working now.

Is there a converter they make that will work in its place?

Can you try this out: http://www.instructables.com/id/Analog-Output-Convert-PWM-to-Voltage/
This will solve the DAC issue without any code changes, and this should be lot cheaper

Brad Cox · Sep 4, 2017

Ranjib said:
Can you try this out: http://www.instructables.com/id/Analog-Output-Convert-PWM-to-Voltage/
This will solve the DAC issue without any code changes, and this should be lot cheaper

I wonder if something like this will work?

KNACRO PWM-to-voltage module / 0% -100% PWM converted to 0-10V voltage https://www.amazon.com/dp/B06XB6J4FV/ref=cm_sw_r_cp_api_u9DRzb3F2R5D7

Ill need two. One for the white channel and one for the blue.

Ranjib · Sep 4, 2017

@Brad Cox I just cut 0.2.1 release, it has the temperature controller fixes.
https://github.com/reef-pi/reef-pi/releases/tag/0.2.1
happy reefing,

Ranjib · Sep 4, 2017

Brad Cox said:
I wonder if something like this will work?

KNACRO PWM-to-voltage module / 0% -100% PWM converted to 0-10V voltage https://www.amazon.com/dp/B06XB6J4FV/ref=cm_sw_r_cp_api_u9DRzb3F2R5D7

Ill need two. One for the white channel and one for the blue.

From the earlier blog post, it seems all we need is an appropriate resistor and capacitor per channel. That seems lot simpler than this. I'll have access to a benchtop oscilloscope soon, so i'll know for sure. Is there a reason you dont want to try the simple capacitor+resistor low pass filter approach ?

Brad Cox · Sep 4, 2017

3d printed my optical sensor mount.

This mounts to a 1/2" pvc pipe and hang on the side of my sump.

Ranjib · Sep 4, 2017

Brad Cox said:
3d printed my optical sensor mount.

This mounts to a 1/2" pvc pipe and hang on the side of my sump.

STL files? is it in thingiverse ?

Ranjib · Sep 4, 2017

Brad Cox said:
3d printed my optical sensor mount.

This mounts to a 1/2" pvc pipe and hang on the side of my sump.

This is awesome by the way

Brad Cox · Sep 4, 2017

Ranjib said:
STL files? is it in thingiverse ?

Yes its on thingiverse.
Its by mtwiley
1/2" pvc optical switch holder
Its fully adjustable as well. Slides up and down the pvc to set the water level.

njtiger aquariums · Sep 4, 2017

Brad Cox said:
Yes its on thingiverse.
Its by mtwiley
1/2" pvc optical switch holder
Its fully adjustable as well. Slides up and down the pvc to set the water level.

Dude this is sweet. I wish I had a 3d printer and was that handy to print stuff out.

Brad Cox · Sep 4, 2017

I wish i could creat a case to put all the pi stuff in.

There are actually stuff there i can print that takes the touchscreen and puts it in a nice case with the pi3.