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

[Brad Cox]

Yea that is right but my drivers in the leds are makeing 0-10volts when on.
Im not sure if i need the pwm circuit or a analog pwm

 

[Ranjib]

Not with the rxact parts i have.
That would be great!

Do i need the DAC i got too?

Try the pwm route first. If that doesn't work, we can try the DAC route

 

[Ranjib]

Can you measure the 0-10v analog with a DMM?

On the circuit to convert the 0-5v to 0-10 will it mess up the power supply since they are making 10 volts also?

Convert the 5 to 10 v outside power circuit, on reef pi circuit

 

[Ranjib]

Can you measure the 0-10v analog with a DMM?

On the circuit to convert the 0-5v to 0-10 will it mess up the power supply since they are making 10 volts also?

You can measure, but you can't distinguish if its pwm or analog. Pwm output will read 0-10v as well. You need oscilloscope to distinguish

 

[Ranjib]

Can you measure the 0-10v analog with a DMM?

On the circuit to convert the 0-5v to 0-10 will it mess up the power supply since they are making 10 volts also?

Should not. Connect the grounds together, choose the right transistor, and review the circuit multiple time.even if things go south, you are dealing with 10v DC, with 1amp, its unlikely you will incur any damage other than screwing couple of transistors.

 

[Brad Cox]

Should not. Connect the grounds together, choose the right transistor, and review the circuit multiple time.even if things go south, you are dealing with 10v DC, with 1amp, its unlikely you will incur any damage other than screwing couple of transistors.

Gotcha!

Do i need this setup for each light or can i run all three lights thru one circuit.
One for the whites and one for the blue but for three lights?

 

[Brad Cox]

Heres the 0-10v circuit.

Getting ready to test it to see what i get. Wish me luck!

 

[Aaron Smith]

Oregon coast today

Oregon nem

 

[Brad Cox]

It works!

But i got a 0-10volt but when i select 100 percent on the window its actually 0.
When i select 0 percent in reefpi its actually 10 volts.

Where did i go wrong lol everything is reverse?

 

[Ranjib]

Expected. Because you are using n channel mosfet and thats how the circuit works,,, the gate voltage in our circuit control the amount of voltage that is being drained (to GND) ., so higher pwm leads to higher draining and lower output, lower pwm leads to lower drain and higher output. I learned this recently and already added an `reverse` option in the led code that will address this in software. Give me some time and you will be able to use reef-pi intuitively with these circuits
https://github.com/reef-pi/reef-pi/blob/master/controller/lighting/config.go#L16

 

[Ranjib]

Oregon coast today

Oregon nem

Thats a classic star burst anemone. They get huge.

 

[Brad Cox]

Expected. Because you are using n channel mosfet and thats how the circuit works,,, the gate voltage in our circuit control the amount of voltage that is being drained (to GND) ., so higher pwm leads to higher draining and lower output, lower pwm leads to lower drain and higher output. I learned this recently and already added an `reverse` option in the led code that will address this in software. Give me some time and you will be able to use reef-pi intuitively with these circuits
https://github.com/reef-pi/reef-pi/blob/master/controller/lighting/config.go#L16

Gotcha!

So when i hook up this circuit to one light the light does wierd stuff.

I can move the slider and its not smooth. It flickers and makes wierd noises. Also the fan stops and starts (it might be normal). But the noises i dont think are.

Also where can i change the equipment tab layout? Like it shows white blue the ln intensity

 

[Cary]

Oregon coast today

Oregon nem

Pretty anemone. Too bad it is a cold water anemone.. I don't think you can put it in you tank can you?

 

[Aaron Smith]

Pretty anemone. Too bad it is a cold water anemone.. I don't think you can put it in you tank can you?

Water is COLD!!! Of course my daughter had to get in!

I am not sure about survive ability.

Thought I'd share my day with you cool people!

Great progress Brad!

 

[Brad Cox]

Water is COLD!!! Of course my daughter had to get in!

I am not sure about survive ability.

Thought I'd share my day with you cool people!

Great progress Brad!

Nice beach!! Enjoy

 

[Cary]

Water is COLD!!! Of course my daughter had to get in!

I am not sure about survive ability.

Thought I'd share my day with you cool people!




Great progress Brad!

You had better put away that phone before you get the evil eye. Thanks for sharing. .Glad you are on the Oregon Coast and not the Texas coast..


Happy for you Brad..please draw a wiring diagram with a list of components... for some reason I don't remember dacs on the list.

 

[Brad Cox]

You had better put away that phone before you get the evil eye. Thanks for sharing. .Glad you are on the Oregon Coast and not the Texas coast..


Happy for you Brad..please draw a wiring diagram with a list of components... for some reason I don't remember dacs on the list.

Yea i havnt used it yet. Although i think i will need it. Im waiting to hear back.

 

[Brad Cox]

Heres my tank so far.

 

[Cary]

Heres my tank so far.

Very nice.

 

[Ranjib]

Yea i havnt used it yet. Although i think i will need it. Im waiting to hear back.

For what ? If the pwm circuit is working, you don't need the DAC