Sun measure sensor

English
1

I have some screens connected to VMB2BLE modules but want to make this automatic, by measure the sun light on that side.

I know, there is a velbus meteo station… but that’s overkill, i don’t need wind or rain. All screens are resistent to wind and rain. I only need a little sun measuring sensor.

There is already a VMB7IN in the installation for this, somebody experience with “sun measuring” sensors?

Is only LUX enough? I have also two VMBPIROW connected, these could also measure lux (?).

Somebody experience without the “Up-Down” effect each 5 minutes.
Thanks

2

Hi

The very easiest and most adjustable solution is the meteo device, but I understand what you’re asking.

I use a really simple LDR sensor via a NPN transistor across the inputs of a VMB7IN to pick up the led pulses on my electricity meter.

With a little playing around with trimming variable resistor at the point of dusk, you might get lucky.

Does that help?

Cheers

3

The VMBPIRO cannot be used to measure daytime light, they are designed to work in the dusk/dawn range. (In full daylight they will be saturated). The same goes for VMBPIRM and VMBPIRC by the way.

1 Like
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Hi @MDAR, sorry for my late reply…

What LDR sensor are you using? Do you check also UV value?
I have already VMB7IN and network cable to the outdoor wall somewhere on the same side of the screens.

did you made a box yourself or a readymade ‘wall’ sensor?

5

2 years isn’t late, but I guess we are in a new decade now, if you’re counting that way.

:smile:

As for the LDR value, I don’t recall the exact one I used, but as I was only detecting an LED pulse, I didn’t need anything special.