Can you explain the difference between the "Normalized Spectral Responsivity" (Fig 18) and "Measured Spectral Responsivity Relative to F8" (Fig 19) in the data sheet? It's a bit confusing. The latter seems to indicate that if I want flat response, I would have to scale the various wavelengths so that the peaks line up. But looking at the former, it appears that they are already flat. Or is the former just intended to show the shapes of the response curves, and the latter shows the actual relative responses of each sensor? I'm trying to use this to make a simple quantum-like PAR sensor to estimate PPFD.
Thanks to you both! You always find interesting things and explain them well. Inspiring - and your selfless devotion to all of us is to be emulated. You know Limor that your teaching skills may be surpassing the engineering :)
"Mr" Lady "Eight" da. Dad jokes. Someone noticed. L.A., you are a tolerant woman. (and a pretty good engineer) Keep up the good work. Kudos both of you.
The best light would be the 5000k which is a neutral white, also called daylight. So for most accurate colour matching you need a very high CRI 95/98 and 5000k
I wonder if someone has made an spectrophotometer with this sensor not only with the supplied library but using labview to integrate other devices working at the same time
I *love* DigiKey's thorough parametric search. It's a shame that for a few years now, ordering/shipping outside the US has become increasingly difficult via DigiKey.
If the light is too bright, you'd risk saturating the photodetectors. Does the sensor-IC adjust the white light to ensure that none of the photodetector-channels saturate?
I connected one of these to an ESP32 with an OLED (64x128). I displayed the values and a bar chart for the 8 visible channels. I'm getting the green channel showing a spike that's almost always higher than the other channels, even in sunlight. I haven't waded through the Arduino library yet, but has anyone else experienced this?
Oops, missed the array index change halfway through. First 4 channels are Readings[0]-[4] and the remaining 4 are Readings[6]-[9]. Hopefully this helps someone else ...
@@surferdudemi I am using this sensor with Raspberry Pi. Can you help me read the values from NIR, Clear and Flicker channel please? Example codes provided for Python is very less. Thanks
@@ashish_ash04 I've only used Arduino (C language), so not going to be much help. Do you have the spec sheet on the sensor so you can see the register addresses for the data and how to read it?
How exciting to see this. I’m the test engineering manager for opto division at AMS.
Can you explain the difference between the "Normalized Spectral Responsivity" (Fig 18) and "Measured Spectral Responsivity Relative to F8" (Fig 19) in the data sheet? It's a bit confusing. The latter seems to indicate that if I want flat response, I would have to scale the various wavelengths so that the peaks line up. But looking at the former, it appears that they are already flat. Or is the former just intended to show the shapes of the response curves, and the latter shows the actual relative responses of each sensor? I'm trying to use this to make a simple quantum-like PAR sensor to estimate PPFD.
Thanks to you both! You always find interesting things and explain them well. Inspiring - and your selfless devotion to all of us is to be emulated. You know Limor that your teaching skills may be surpassing the engineering :)
"Mr" Lady "Eight" da. Dad jokes. Someone noticed. L.A., you are a tolerant woman. (and a pretty good engineer) Keep up the good work. Kudos both of you.
Yeah the dad jokes seemed to be falling flat with the live, in person audience at the start 🤣
The best light would be the 5000k which is a neutral white, also called daylight. So for most accurate colour matching you need a very high CRI 95/98 and 5000k
Thank you.
It's the purple line at the bottom of the graph because it's a lower amount of energy to run that color?
I wonder if someone has made an spectrophotometer with this sensor not only with the supplied library but using labview to integrate other devices working at the same time
I *love* DigiKey's thorough parametric search. It's a shame that for a few years now, ordering/shipping outside the US has become increasingly difficult via DigiKey.
Dos it make sense to "mix and match" to boost the CRI? Perhaps adding monochromatic devices to "fill the gaps"?
When's the sensor coming out.
If the light is too bright, you'd risk saturating the photodetectors. Does the sensor-IC adjust the white light to ensure that none of the photodetector-channels saturate?
yes you can adjust the current to the LED to adjust the brightness
For like, say, a fully digital Kirlian Camera?
I connected one of these to an ESP32 with an OLED (64x128). I displayed the values and a bar chart for the 8 visible channels. I'm getting the green channel showing a spike that's almost always higher than the other channels, even in sunlight. I haven't waded through the Arduino library yet, but has anyone else experienced this?
Oops, missed the array index change halfway through. First 4 channels are Readings[0]-[4] and the remaining 4 are Readings[6]-[9]. Hopefully this helps someone else ...
@@surferdudemi I am using this sensor with Raspberry Pi. Can you help me read the values from NIR, Clear and Flicker channel please? Example codes provided for Python is very less. Thanks
@@ashish_ash04 I've only used Arduino (C language), so not going to be much help. Do you have the spec sheet on the sensor so you can see the register addresses for the data and how to read it?