RGBW controller 0-10V input, strange measurement

[jorritf 1]

Recently I've been trying to get a 0-10V brightness sensor working with the RGBW Controller (v2.5).

 

However, when connecting the sensor to GND and IN1, the RGBW controller doesn't report anything lower than 1,7V. The brightness sensor itself appears to be fine, and happily reports values in the entire 0-10V range, according to my volt meter.

 

Also, when nothing is connected to the controller, my volt meter reports 10,6V when measuring between GND and IN1, IN2, IN3 and IN4. That doesn't seem right?

This is the case in every mode I put the controller in, so also in the "ANALOG 0-10V" mode (config option 14 set to 0x8888)

 

What can I do to get a correct 0-10V reading from the controller?

 

Power supply: 24V din rail 0,8A

RGBW controller: FGRGWBM-441 v2.5

Sensor: Loxone 0-10V brighness sensor 0-100.000 lux (needs 24V DC)

 

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[henzel 0]

1 hour ago, petergebruers said:

Well... When I type "CA3140" in the search box on conrad.be or conrad.de, I get one result. This is the URL of the search

 

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Don't you get a result?

 

You can also buy it from Reichelt:

 

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the confusion was in addition (Z) Ca3140E
Thanks for your help and patience.

Regards, Hans

[petergebruers 1,268]

Now I understand what the problem was. The "Z" means "Lead Free" (meaning no lead is present in the solder on the pins). The ROHS initiative banned the use of lead long ago. The "Z" is of no significance in this application. BTW the "E" means 8-pin plastic DIP. You could also order an "M" but that is an SMT version. Good luck with your project!

[henzel 0]

Hi Peter, I have connected the components in accordance with the drawing. The Lux sensor provides direct its maximum value, and changed no more. I've covered the sensor but nothing happens. The maximum valvue of the passieve Lux sensor is 60000Lux.

Do i have to change a parameter or somthing?

 

Thanks!

[petergebruers 1,268]

You have a different sensor than the one used in this topic? Can you link to the documentation of your sensor?

 

To test: disconnect the sensor. Now connect the input of the buffer to ground. The RGBW should report no more than 0.1 V after (manual) polling. Then connect the input to 12 V. Now the module should report 10 V.

 

If that doesn't work, please send me a photo of th top and the bottom of your pcb.

[emielstroeve 22]

you also have to set the max lux and Volts the sensor generates in the rgbw channel. 

[henzel 0]

right, that's what I did. 

start 0V - 0 Lux end 10V - 60000Lux right?

 

 

 

This is the sensor i use Berker passief lux sensor 0-10V

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I'm going to run the test, Peter I will let you know the outcome performed ASAP.

 

Thanks for you're help boys!

 

Have a nice weekend!

 

This is the Conrad order

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[Michael80 0]

Hello again!

 

I also have the problem with my Sensor and the Fibaro RGBW Module.

So I have order :

1 x CA3140
2 x 1N4148
2 x 100nF
2 x 10Kohm
1 x 1M ohm

 

Need I a platine for Install the components?

 

My knowledge of electronics are not so good, and I have I question whether it is possible a Step by Step Instructions to post here, please

 

 

Edited October 21, 2016 by Michael80

[petergebruers 1,268]

On 21-10-2016 at 11:45 AM, Michael80 said:

Hello again!

 

I also have the problem with my Sensor and the Fibaro RGBW Module.

So I have order :

1 x CA3140
2 x 1N4148
2 x 100nF
2 x 10Kohm
1 x 1M ohm

 

Need I a platine for Install the components?

 

My knowledge of electronics are not so good, and I have I question whether it is possible a Step by Step Instructions to post here, please

 

 

 

I'm not sure I fully understand the question. You can solder these components onto a stripboard:

 

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Or you can test the circuit on a breadboard (for testing only, of course).

 

The schematic is several posts back. If all's well, this link will take you to the post:

 

 

[Ondrej Bajer 2]

On ‎27‎.‎9‎.‎2015 at 10:17 PM, petergebruers said:

Some time ago, I built a little circuit to adapt the output of the Loxone sensor to the RGBW. With this contraption, the input of the RGBW can get as low as the sensor. That's around 0,06 V. That will give you a much improved range. This circuit should work for other sensors too.

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Hi Peter,

works great! Thanks a lot for sharing your knowledge.

ONDREJ

[petergebruers 1,268]

@Ondrej Bajer I am glad you like it!

[deandre_7 0]

After some digging, I found this thread.

I am experiencing somewhat the same issue.

My RGBW @12volts is showing 2v GND to IN1...IN4. 

Would your circuit help me?

 

I have a Ultrasonic sensor Maxbotix MB7060 with a analog out.. the sensor puts out 0.80V to 2.5 volts. 

With the 2 volts from the RGBW the sensor won't work.

[Milan Takacs 22]

Hi All,

 

I have the same problem here...

RGBW + Anemometer ( A1733 Anemometer Wind Speed Sensor 0.4 - 2V 

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 )

12V for all the two.

I measure fix 10,6V on IN1. No matter what is the status of the anemometer....

 

Please, help!

[petergebruers 1,268]

On 1/5/2019 at 5:54 AM, deandre_7 said:

the sensor puts out 0.80V to 2.5 volts.

My little buffer circuit should work. But bear in mind, the RGBW has 0.1 V resolution best case.

 

2 hours ago, Milan Takacs said:

Sensor 0.4 - 2V

Same answer as previous question.

[Milan Takacs 22]

7 minutes ago, petergebruers said:

My little buffer circuit should work.

 

Thanks! I will try. (if I can find someone, who can make it for me  )

[deandre_7 0]

Will give it a shot as well. thanks

[petergebruers 1,268]

I'm assuming you already have the RGBW and want to use it, but for sake of completeness... If you like "Arduino" stuff then I'd recommend 

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You might need a bit of analog circuitry and experiment a bit, but you will get better resolution from that ADC and you can design your own device. For instance, add a (digital) humidity/temperature sensor. Or ad a relay to control something.

 

Some discussion about using the Z-Uno ADC on an analog level sensor here: