Hi.
I need to measure the outdoor intensity light near my solar panels.
I will use LRD, but don't know the right one to use. I found at least 5 references code.
GL5516, GL5528 , GL5537, GL5539 , GL5549.
Which one should I use to get best accuracy day light values?
Thank in advance.
Which ever one you choose you will have to do some calibration and amplification for best practice.
LarryD:
Which ever one you choose you will have to do some calibration and amplification for best practice.
Hi.
Thank for your help.
I'm not a electronic guy, I'm a networking guy. My knowledge in electronic are basic. I use to assemble parts, I can even replace components, not develop a schematic. So I was googoling and found this schematics:
Is this schematic usable for my propose ?
Daylight/sunlight.
The LDR will have a low value.
Just connect the LDR to an analogue pin with a 10k pullup resistor.
No "circuit" needed.
Smoothing (birds, clouds) can be done in software.
An LDR won't last long outdoors in full sun.
Maybe better to use a small solar cell, like the ones found in $2 garden lights.
That, and a burden resistor across, generates a voltage that can be measured with an analogue pin.
Leo..
Wawa:
Daylight/sunlight.
The LDR will have a low value.
Just connect the LDR to an analogue pin with a 10k pullup resistor.
No "circuit" needed.
Smoothing (birds, clouds) can be done in software.An LDR won't last long outdoors in full sun.
Maybe better to use a small solar cell, like the ones found in $2 garden lights.
That, and a burden resistor across, generates a voltage that can be measured with an analogue pin.
Leo..
Hi
Thanks.
It is what I'm testing for a few days. One LDR and a small solar cell salvaged from an old garden light.
I'm running a small sketch to visualize the correlation between this LDR and the solar cell.
But for my final project I was thinking to use the LDR and a DHT22 inside a translucent container, a small tube where I can fit the LDR and the DHT22. It will be placed near my solar panel.
Ok, but can you tell which one is better: GL5506 or GL5549 ?
Tony5:
Ok, but can you tell which one is better: GL5506 or GL5549 ?
Hi.
After some tests, I gave up of LDR's. In my final, project I used some BPW34 photodiode.
Very easy to use, just use analogue pin to read the values.