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Andreas Spiess
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Browsing through my collection of sensors, I found quite a few which deal with measuring of light. Today we will have a look at these sensors, bring them in some order, and test them. In the end, you should be able to decide which sensor is best to use for your project.
Today’s selection covers the following areas:
- RGB sensors
- Lux sensors
- UV sensors
- IR Sensors
- Proximity/gesture sensors
I am a proud Patreon of GreatScott!, Electroboom, Electronoobs, EEVblog, and others.
Links:
Color Sensors:
TCS3200:
TCS3414: s.click.aliexpress.com/e/_dUa...
TCS34725: s.click.aliexpress.com/e/_d6f...
ISL29125: s.click.aliexpress.com/e/_dTL...
Illuminance / Lux Sensors
BH1750: s.click.aliexpress.com/e/_dSR...
TSL2561: s.click.aliexpress.com/e/_dT3...
TSL2591: s.click.aliexpress.com/e/_d81...
LDR: s.click.aliexpress.com/e/_dT1...
Phototransistor: s.click.aliexpress.com/e/_d7I...
UV-Sensor:
ML8511: s.click.aliexpress.com/e/_dU9...
Proximity / Gesture Sensors
APDS-9960: s.click.aliexpress.com/e/_dVG...
AP3216C: s.click.aliexpress.com/e/_dW5...
TOF Sensor
VL53L0X: s.click.aliexpress.com/e/_dTN...
VL53L1X (Long Range) : s.click.aliexpress.com/e/_d6T...
Sketches: github.com/SensorsIot/Light-S...
Table of content:
01:17 : Episode 269 (2019-05-19): "#269 Infrared Light: Raspberry IR Camera
and cheap Spectrometer (i-Phos)"
youtube DOT com/watch?v=sttQAL4r4TQ
01:58 : Start of RGB (colour) sensors part
03:36 : Second peak in the infrared for the colour sensor
05:36 : White LEDs emit more in the blue part of the spectrum
05:49 : Start of colour sensors TCS3414/TCS34725 part (I²C interface)
en DOT wikipedia DOT org/wiki/I%C2%B2C
07:19 : Example of usefulness of 3D printing
07:33 : Start of the Lux / illuminance sensors part (BH1750, TSL2561, TSL2591,
noname LDR, and noname phototransistor)
08:18 : Wife joke
08:50 : Start of the BH1750 part
09:45 : Start of the TSL2561 part
10:27 : Start of the LDR part
11:04 : Start of the phototransistor part
11:10 : 220 kΩ series resistor (collector)
11:23 : Application of an LDR for monitoring a system's status LED.
11:41 : Start of the UV sensor part (ML8511)
en DOT wikipedia DOT org/wiki/Ultraviolet
13:00 : Start of the infrared (IR) sensors part
13:18 : IR sensor TSOP1838 (only output for modulated light at 38 kHz)
13:46 : Start of the proximity sensors, etc. part (APDS-9960 and AP3216C)
15:32 : Start of the AP3216C part
15:53 : Roundup
The links above usually are affiliate links which support the channel (no additional cost for you).
Supporting Material and Blog Page: www.sensorsiot.org
Github: www.github.com/sensorsiot
My Patreon Page: / andreasspiess
Discord: / discord
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9 июл 2024

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Комментарии : 437   
@bm830810
@bm830810 4 года назад
Hi, the text at 4:00 is too small, and thanks for the great content
@AndreasSpiess
@AndreasSpiess 4 года назад
Thanks for the feedback. I started to use OBS and did not get everything right. Next time I will change it.
@TheHellis
@TheHellis 4 года назад
@@AndreasSpiess you can just crop the view in your video editing software.
@gg-gn3re
@gg-gn3re 4 года назад
@@TheHellisYea but in OBS he can just drag it to be bigger part of the screen which is easier than editing software.
@pandoracrab
@pandoracrab 4 года назад
Timely recording for me. I was trying to get UV readings with a VEML6075. Reads nicely but discovered it is very directional. I'd need a solar tracker for it to measure solar UV consistently.
@martin.pokorny
@martin.pokorny 4 года назад
I like your videos, Andreas. They have a good "signal/noise ratio"
@AndreasSpiess
@AndreasSpiess 4 года назад
Cool, thanks
@userou-ig1ze
@userou-ig1ze 3 года назад
i.e. concise
@benmeadors6799
@benmeadors6799 4 года назад
These sensor / board comparison videos are my favorite. They're always informative and help me out in my projects.
@AndreasSpiess
@AndreasSpiess 4 года назад
Thank you!
@ramoncomellas4245
@ramoncomellas4245 4 года назад
Thanks again for a great video. I specially enjoy these compilation videos which compare similar devices and helps us followers save a lot of time searching for the info you kindly bring us in the usual well structured and easy to follow videos
@AndreasSpiess
@AndreasSpiess 4 года назад
Glad you enjoyed it! These compilations help me too ;-)
@zrxav
@zrxav Год назад
I want to thank you for your work. You've been so helpful, every time I want to buy a new sensor for a project there's a video of you trying the most common available and making a thoroughly made review about it. So, thank you you've made much lighter the work otherwise I've had to make in order to choose the right sensor for my project
@AndreasSpiess
@AndreasSpiess Год назад
You are welcome. Glad my channel is helpful for you!
@martinsauerteig4882
@martinsauerteig4882 4 года назад
Congrats: You hit the 200.000!! And again a great Video. Thanks for that and stay healthy. Have great easter holidays.
@AndreasSpiess
@AndreasSpiess 4 года назад
Thank you. As an engineer I think in dB. So the next important step is 1 mio ;-) Happy Easter, too!
@engr.arslanhashmi2733
@engr.arslanhashmi2733 4 года назад
Yes he deserve for it
@christosmoutevelis4896
@christosmoutevelis4896 4 года назад
Happy Easter, Andreas! Thanks for another great video!
@AndreasSpiess
@AndreasSpiess 4 года назад
You are welcome!
@aruns349
@aruns349 4 года назад
Thanks for a lovely video on light sensors! Really appreciate your work and dedication.
@AndreasSpiess
@AndreasSpiess 4 года назад
My pleasure!
@AjinkyaMahajan
@AjinkyaMahajan 4 года назад
You have covered all sensors in my treasure. Nice explanation. Thanks !!! ✨✨✌
@AndreasSpiess
@AndreasSpiess 4 года назад
My pleasure 😊
@NullPointer
@NullPointer 4 года назад
This video arrived in the perfect time for me, today I was researching the detection of gamma and beta radiation using photodiodes as a replacement for Geiger-Müller tubes, so this video was very handy! Congrats for the 200k! :D
@AndreasSpiess
@AndreasSpiess 4 года назад
Thank you! And good luck with your project.
@acpck
@acpck 4 года назад
Thanks for dedicating your time to another great video! :) Right now we are developing a project that needs a light sensor and after a close examination we've went fo the same IC TCS34725.
@AndreasSpiess
@AndreasSpiess 4 года назад
Very cool!
@asiw
@asiw 4 года назад
Very comprehensive as usual and a superb reference for the future.
@AndreasSpiess
@AndreasSpiess 4 года назад
Glad you think so!
@PALTUBABY
@PALTUBABY 4 года назад
As always very informative and useful. Thank you Andreas :)
@AndreasSpiess
@AndreasSpiess 4 года назад
My pleasure!
@MIsam-fv9kb
@MIsam-fv9kb 4 года назад
hi Andreas i like those videos when you talk about different sensors and compare them keep up the good work , i think your channel will become the reference in sensors boards for arduino and MCUs
@AndreasSpiess
@AndreasSpiess 4 года назад
Glad you like them!
@mr.anonymous298
@mr.anonymous298 3 года назад
Thanks for such a nice sensors comparison video.
@yoginiprabhu8048
@yoginiprabhu8048 3 года назад
superb explanation of content and inclusion of initial targets and end results for complete understanding! God bless you this video came as ray of hope for my works!!
@AndreasSpiess
@AndreasSpiess 3 года назад
Glad it was helpful!
@3xAudio
@3xAudio 4 года назад
Always interesting ideas to get inspiration in the Arduino community thanks for sharing.
@AndreasSpiess
@AndreasSpiess 4 года назад
Glad you enjoyed it!
@dirk-janfaber
@dirk-janfaber 4 года назад
Thanks for the informative video. I made a rgb sensing setup yesterday using the AS7262 chip. Though expensive, it is easy to work with and accurate.
@AndreasSpiess
@AndreasSpiess 4 года назад
I looked at the sensor in the past, but was driven away by the high price. Now I ordered one. Thanks for the tip!
@avejst
@avejst 4 года назад
Great test as always Thanks for sharing 👍😁
@AndreasSpiess
@AndreasSpiess 4 года назад
My pleasure!
@meinsda5983
@meinsda5983 4 года назад
Great Work Andreas!
@AndreasSpiess
@AndreasSpiess 4 года назад
Thanks a lot!
@molitovv
@molitovv 4 года назад
This video is right up my alley
@AndreasSpiess
@AndreasSpiess 4 года назад
Good to know! Thanks.
@Beeblzaphod
@Beeblzaphod 4 года назад
Bloody hell, what a great video :-) Thanks a 1 000 000 for the content, very interesting and illuminating informations.
@AndreasSpiess
@AndreasSpiess 4 года назад
Glad you enjoyed it
@erikschatz348
@erikschatz348 4 года назад
Thanks, Andreas! That will help me for an advanced line following modul. See you next UKW conference hopefully!
@AndreasSpiess
@AndreasSpiess 4 года назад
We will see if hte borders are open till then ;-)
@et752
@et752 4 года назад
Very comprehensive review.. .quite helpful to have for future reference
@AndreasSpiess
@AndreasSpiess 4 года назад
Glad you liked it
@juanrivera4938
@juanrivera4938 4 года назад
Worked so hard trying to fix the APDS9960 with no luck, thank you!!!
@AndreasSpiess
@AndreasSpiess 4 года назад
You are welcome!
@electronic7979
@electronic7979 4 года назад
a useful and educational video. liked it very much. The information you provided useful very well for me.
@AndreasSpiess
@AndreasSpiess 4 года назад
Glad to hear that! Have a nice Sunday!
@mrmx2k
@mrmx2k 4 года назад
Congrats Andreas!! Your videos should be within a Public Electronic Wikipedia as a reference! Greetings from Spain!
@AndreasSpiess
@AndreasSpiess 4 года назад
Maybe one day ;-) Thank you
@lottery248
@lottery248 4 года назад
congrats on 200k
@AndreasSpiess
@AndreasSpiess 4 года назад
Thank you!
@tonmommers7942
@tonmommers7942 4 года назад
Very usefull these overviews of sensors.
@AndreasSpiess
@AndreasSpiess 4 года назад
Thank you!
@andrewbeasley
@andrewbeasley 4 года назад
Well that video brightened a dull day (sorry). Learnt a lot - never realised the sensors where so different. I’ll be following up the gesture sensor, thank you for publishing your code for that. One thing to note - a significant amount of ‘white’ paper is actually blue to give a clean cold look rather than a warm tint.
@AndreasSpiess
@AndreasSpiess 4 года назад
You are right for teh paper (AFAIK not in all countries equally). But here I measured the spectrum of the diodes without paper. So both effects would add up :-(
@ManishMoorjmalani
@ManishMoorjmalani 3 года назад
great work Andres
@AndreasSpiess
@AndreasSpiess 3 года назад
Thank you!
@Inertia888
@Inertia888 4 года назад
In my current project I am designing a sensor for determining distance with a red 5mW laser diode. I would like to be able to use these readings to control the response of a small dc stepper motor for controlling an X/Y axis small milling table. I have a lot to learn and I am sure this information will set me in the right direction. I started thinking about this project only earlier today, so this video came out with perfect timing for my needs. Thank You for all of your help over the past few years that I have been developing my understanding of these concepts.
@AndreasSpiess
@AndreasSpiess 4 года назад
Maybe you look also at the TOF and Lidar sensors.
@sbmuthuraman
@sbmuthuraman 2 года назад
Hi Andreas, video with lot of tehnical details and extensive comparison of different sensor available on the market. I feel bad that I did not find your video for this long time.. Once again Thank you so much.. I see a German accent in your explanation. Danke schön.
@AndreasSpiess
@AndreasSpiess 2 года назад
Thank you for your nice words!
@aminzayani6556
@aminzayani6556 3 года назад
Thank you very much for this video! I found it very useful :)
@AndreasSpiess
@AndreasSpiess 3 года назад
Glad to hear that!
@juancarlossoto3748
@juancarlossoto3748 2 года назад
Sure, Maaaaan. I like your form to explaint the sensors that I use, thank you very much
@AndreasSpiess
@AndreasSpiess 2 года назад
You are welcome!
@marcdraco2189
@marcdraco2189 3 года назад
I love the way Andreas shares his own mistakes and that self-deprecating humour is wonderful!
@AndreasSpiess
@AndreasSpiess 3 года назад
Thank you. We all make mistakes. The difference is how we deal with it...
@marcdraco2189
@marcdraco2189 3 года назад
​@@AndreasSpiess your method (I use a similar one) allows us to demonstrate to our peers and students that's to "err" is not just natural but part of a healthy learning process. By brushing our mistakes under the carpet or worse, denying them, we create an atmosphere of mistrust and fear that only hampers learning. Honestly Andreas, I wish there were more RU-vid instructors (and teachers in general) like you out there. Humanity would be far less self-destructive if there were.
@Mr0neShotAway
@Mr0neShotAway 4 года назад
Great video, thank you :)
@AndreasSpiess
@AndreasSpiess 4 года назад
Glad you liked it!
@bassome3000ify
@bassome3000ify 4 года назад
awesome as always
@AndreasSpiess
@AndreasSpiess 4 года назад
Thank you!
@bf945
@bf945 2 года назад
Very glad to have found this channel and this video. Would like to have seen more info on UV sensors, particularly for a weather station to detect the UV level outdoors.
@AndreasSpiess
@AndreasSpiess 2 года назад
You can find other UV sensors. Just make sure that the protection does not block UV (e.g. Glas blocks UV)
@manu808
@manu808 4 года назад
Great video! Thank you
@AndreasSpiess
@AndreasSpiess 4 года назад
You are welcome!
@FF7824
@FF7824 4 года назад
Well done. (again) Thanks.
@AndreasSpiess
@AndreasSpiess 4 года назад
You are welcome!
@juancarlosnarvaez3875
@juancarlosnarvaez3875 4 года назад
Good video Andreas. Greetings from Ensenada Mexico
@AndreasSpiess
@AndreasSpiess 4 года назад
Hello there! Thank you
@flibustieros
@flibustieros 4 года назад
Gz with 200k subscribers. Go to 500k!
@AndreasSpiess
@AndreasSpiess 4 года назад
1 million is my next goal ;-)
@engr.arslanhashmi2733
@engr.arslanhashmi2733 4 года назад
Awesome video keep it up .
@AndreasSpiess
@AndreasSpiess 4 года назад
Thanks, will do!
@johnjacobjinglehimerschmid3555
@johnjacobjinglehimerschmid3555 4 года назад
Man I love your vids.
@AndreasSpiess
@AndreasSpiess 4 года назад
Thank you!
@johnjacobjinglehimerschmid3555
@johnjacobjinglehimerschmid3555 4 года назад
@@AndreasSpiess I'd love to spend a week with you in your lab. Trying to learn all this stuff is hard. I'm a great grunt worker .... I sweep a mean floor
@matneu27
@matneu27 4 года назад
Thank you for another interesting video in a series that will hopefully be continued 👍 At last no sensor or web based service can replace the wifes skills and predictions 😁
@AndreasSpiess
@AndreasSpiess 4 года назад
You bet!
@klassichd10
@klassichd10 4 года назад
Thank you for your effort and time spent on this Topic. Regarding your awning: What also could be helpful for you is the cloudage. I am measuring far IR Temp with a Melexis MLX90614 and environmental Temp with an BM280 or SHT35 (you would prefere the Swiss one). Then I calculate (or rather more guess) the cloudage.
@AndreasSpiess
@AndreasSpiess 4 года назад
This is a very interesting concept! Maybe I add a few additional sensors to my Lux meter and compare their readings...
@lohikarhu734
@lohikarhu734 4 года назад
@@AndreasSpiess him gokd sir...i, too was thinking about suggesting an IR sensor, as the luxmeter will not 'see' the IR that is heating your home...still, if it sees overall brightness, it would give a 'useful' correlation to insolation...
@stefankuhnen6305
@stefankuhnen6305 4 года назад
I would love to see a Video on different sensor types and comparing the usefulness for this scenario.
@r1273m
@r1273m 4 года назад
Very interesting video, many of these devices I have never used. Things have certainly come a long way since the OCP71 (or OC71 with the paint scratched off!). I have a WEMOS which monitors the temperature and humidity in my loft, I think I will add a light sensor to warn if the loft lights are left on when the hatch is closed. Bob
@AndreasSpiess
@AndreasSpiess 4 года назад
Yea, the world became simpler and better in this respect.
@niklasjohansson6195
@niklasjohansson6195 4 года назад
Thanks for a great video! I use VEML7700 or VEML6030 mostly for it's low sleep current. Not at Aliexpress but at Adafruit as a module.
@AndreasSpiess
@AndreasSpiess 4 года назад
Thanks for sharing!
@GhVost
@GhVost 4 года назад
Frohe Ostern, Andreas!
@AndreasSpiess
@AndreasSpiess 4 года назад
Danke. Ebenfalls!
@daves3819
@daves3819 4 года назад
Thanks for the video. I've been using the GY-49 / MAX44009 module for measuring lux in my greenhouse (to calculate the total moles of light the plants receive). It claims to have a range up to 188,000 lux.
@AndreasSpiess
@AndreasSpiess 4 года назад
Thanks for the tip!
@BerndFelsche
@BerndFelsche 4 года назад
An LED will also work as an ambient light detection sensor. First used IIRC by HP in calculators, measuring the voltage of 7-segment displays where the LED segment was off, to determine the current to drive the display segments, according to ambient light. So you wouldn't suffer retinal damage in the lab from a display readable in outdoor daylight.
@AndreasSpiess
@AndreasSpiess 4 года назад
I assume they use the same effect as the phototransistors. But I di not know that they are very sensitive.
@BenjaminEggerstedt
@BenjaminEggerstedt 4 года назад
Frohe Ostern, Andreas und vielen Dank für die tollen Videos. Ich freue mich, dass du die 200.000 Abonnenten erreicht hast - ein großartiger Meilenstein: Gratulation! Bleib gesund in dieser schwierigen Zeit! Vielleicht brauchen wir jetzt eine Definition von dBs(ubscriber), dann wünsche ich alsbald +3dBs ;)
@AndreasSpiess
@AndreasSpiess 4 года назад
Ich bin etwas spät für Osterwünsche. Dankeschön! Betreffend 200'000: Da denke ich in 10 dB und konzentriere mich auf die Million ;-)
@PhG1961
@PhG1961 4 года назад
Nice video. Btw, don't worry, my wife also laughs with my experiments quite often.... so you're not alone ;-)
@AndreasSpiess
@AndreasSpiess 4 года назад
Good to hear! Not really dangerous for usi, I think ;-)
@visperaschristopheremmanuel513
@visperaschristopheremmanuel513 3 года назад
It is helpful for my quantum photonics research.
@AndreasSpiess
@AndreasSpiess 3 года назад
Glad to help!
@visperaschristopheremmanuel513
@visperaschristopheremmanuel513 3 года назад
@@AndreasSpiess. God bless Sir.
@andresbenitez77
@andresbenitez77 4 года назад
I really like the last sensor
@AndreasSpiess
@AndreasSpiess 4 года назад
Me too ;-)
@JohanSchmidt85
@JohanSchmidt85 4 года назад
Hi Andreas, thanks for another great video. I just want to mention that LEDs can also be used as light sensor for some applications. I am using an array of 3 LEDs for an ultra low cost 3-channel spectrometer.
@JohanSchmidt85
@JohanSchmidt85 4 года назад
Here is a link wiki.analog.com/university/courses/electronics/electronics-lab-led-sensor
@AndreasSpiess
@AndreasSpiess 4 года назад
Thank you for the link!
@gustavoenriquejimenez8098
@gustavoenriquejimenez8098 2 года назад
I worked in lighting for 10 years. The best light sensor in lux, in my humble opinion, is the Texas Instrument OPT3001. I scanned across the entire visible spectrum, from 380nm to 780nm in 20nm steps, and the sensor actually fits almost perfectly the CIE-defined eye sensitivity curve. It is the best light sensor I could measure. In addition to adjusting to the sensitivity of the human eye, it can measure from 0.1 lux to 100,000 lux. This dynamic range of measurement is amazing.
@AndreasSpiess
@AndreasSpiess 2 года назад
Thank you for the tip. I ordered one.
@abelsorolla5321
@abelsorolla5321 4 года назад
great video, very usefull
@AndreasSpiess
@AndreasSpiess 4 года назад
Glad it was helpful!
@dave_dennis
@dave_dennis 4 года назад
Hello Andreas, I have worked for TAOs since long before we were purchased by AMS. You are correct the TCS3200 is outdated. Also the TCS3414 as well. Neither of these have IR filters because when they were designed the technology to deposit the filter directly on the chip was new and very expensive. You are right the TCS34725 is the only AMS part you had that is not obsolete. BTW the Avago part is really an AMS part. TCS3223 I believe. AMS now has a TIme of Flight device you should try. This is very interesting part. Oh, and that TSL2561 was used as the Ambient Light Sensor by Apple in the very first iPhone. Those have a very wide dynamic range because you have an analog gain setting and you can also set the integration time from 2.7ms all the way up to 65535 x 2.7ms. Great video! DE N5BOC
@AndreasSpiess
@AndreasSpiess 4 года назад
Thankl oyu for the info. I still struggle with both sensors out in the sunlight. As far as I see TCS34725 is saturated and the TSL 2561 sometimes provides strange values. I have to investigate further and also ordered some ND filters to reduce the light energy.
@jonnyenglisch1026
@jonnyenglisch1026 4 года назад
Frohe Ostern Andreas!
@AndreasSpiess
@AndreasSpiess 4 года назад
Danke. Leider bin ich für ein "Ebenfalls" zu spät :-(
@redstone51
@redstone51 4 месяца назад
EXCELLENT POST!!!🙏👌
@AndreasSpiess
@AndreasSpiess 4 месяца назад
Thank you!
@McTroyd
@McTroyd 4 года назад
You know the wife is paying attention when she starts mocking your engineering choices. :D Thanks for the comparison -- I hadn't even heard of half of these. Time for another shopping round...
@AndreasSpiess
@AndreasSpiess 4 года назад
No hurry. Logistics anyway does not work properly for the moment. I am waiting and waiting...
@morpheusde
@morpheusde 4 года назад
Danke für das wieder sehr informative Video, Andreas es sind die Sätze wie, meine Frau machte Witze über meine Fähigkeiten die mich jedes mal schmunzeln lassen und ich sozusagen eine tiefe Verbundenheit verspüre, mir geht es ja genauso. Oder so Sätze wie in deinem LoRaWAN Video als es darum ging die Pins vom Draginoboard einzutragen "Otherwise you scratch your head an nothing goes" (Video 117) soooooo genial :-) Hey schöne Ostern und bleibt gesund!
@AndreasSpiess
@AndreasSpiess 4 года назад
Ich bin leider etwas spät für Osterwünsche. Danke! Ja, auf diesem Kanal sind viele ähnlich Interessierte Leute anzutreffen. Ich finde das sehr schön. RU-vid sei dank können wir uns so finden und etwas vernünftiges unternehmen...
@daromee
@daromee 4 года назад
Thanks in advance for your comments
@tablatronix
@tablatronix 4 года назад
wow , I thought I had alot of light sensor modules to test, wow Some of these I have never seen.
@AndreasSpiess
@AndreasSpiess 4 года назад
And during cleanup I found two additional ones ;-)
@typxxilps
@typxxilps 4 года назад
really great and extraordinary content ... but have just a view sensors you already mentioned.
@AndreasSpiess
@AndreasSpiess 4 года назад
Thank you!
@MultiPowerLoRd
@MultiPowerLoRd 4 года назад
Andreas thank you for your vídeo. Excelent. I used APDS 9960 for a project wich needs to get light colour temperature (Kelvin) it is an excelent sensor.
@AndreasSpiess
@AndreasSpiess 3 года назад
Thank you for sharing your experience!
@g.s.3389
@g.s.3389 4 года назад
very interesting video ;)
@AndreasSpiess
@AndreasSpiess 4 года назад
Thanks for the visit
@PranavSharma2504
@PranavSharma2504 4 года назад
@andreas If you use a lux sensor for your awning you'll need to keep adjusting it every winter for when you want to sit out in the sun. It might be better to use a temperature sensor instead. Or maybe mix both (lux and temperature) and make some Node-RED flow for it! Sounds like a project! 😉
@AndreasSpiess
@AndreasSpiess 4 года назад
node red should be able to do some simple if-then-else to avoid wrong extractions...
@paede81
@paede81 4 года назад
Yes there is another one which I prefer: The TEMT6000. I also use it to measure sunlight and control my sun roof
@AndreasSpiess
@AndreasSpiess 4 года назад
Another viewer in the comments below reported that this one maxes out quite early. Do you have a trick?
@paede81
@paede81 4 года назад
@@AndreasSpiess yes you are right, I checked my setup (weather station) again and it's an SI1145 which I use outdoor. I use the TEMT6000 as indoor sensor
@meteor8076
@meteor8076 4 года назад
very interesting !
@AndreasSpiess
@AndreasSpiess 4 года назад
Glad you think so!
@vadimzhdan3293
@vadimzhdan3293 4 года назад
Very good!)
@AndreasSpiess
@AndreasSpiess 4 года назад
Thank you!
@DuongST
@DuongST 4 года назад
Thanks !
@AndreasSpiess
@AndreasSpiess 4 года назад
Welcome!
@maxtester8824
@maxtester8824 4 года назад
Happy Easter, Andreas! Great video! I wonder wether one of the proximity sensors would be accurate enough to use in a 3D printer for auto bed leveling?
@111chicane
@111chicane 4 года назад
Those are nowhere near accurate enough. You may look at some TOF sensors
@maxtester8824
@maxtester8824 4 года назад
D Stanoev thanks for the feedback!
@111chicane
@111chicane 4 года назад
@@maxtester8824 Welcome!
@raymondtwm
@raymondtwm 4 года назад
Thanks! This video useful for me.I wonder how to create a strobe lux meter
@AndreasSpiess
@AndreasSpiess 4 года назад
I assume you need a sample and hold circuit used in ADCs to hold the maximum voltage of a sensor.
@raymondtwm
@raymondtwm 4 года назад
@@AndreasSpiess Thx
@hoegge
@hoegge 2 года назад
Great video. What can one use to detect rapidly changing / digital light signals?
@AndreasSpiess
@AndreasSpiess 2 года назад
I assume phototransistors would be ok. Depends on the frequency, of course. The datasheets are your friends.
3 года назад
Do you know any sensor for direct reading sunlight in watts?
@AndreasSpiess
@AndreasSpiess 3 года назад
No. Most only measure intensity and you have to calculate the watt produced by your solar cell. I would measure the watts produced by your solar cell for that purpose
@christopherlawes9286
@christopherlawes9286 4 года назад
Great vid Andreas! I would really love instructional on how to make a colorimeter with ESP32.
@AndreasSpiess
@AndreasSpiess 4 года назад
This is a very special area, so the chance I will cover it is small.
@christopherlawes9286
@christopherlawes9286 4 года назад
@@AndreasSpiess Sad to hear but, thanks for the reply and thanks for your great videos.
@nonicnik
@nonicnik 4 года назад
For proximity and lux sensors there also is the SI114X series. I'm waiting for an SI1145 which can even approximate the UV Index by combining the IR and Visible Light sensors. Frohe Ostern
@AndreasSpiess
@AndreasSpiess 4 года назад
Interesting sensor! Ordered ;-) Thank you
@awaagrikh8331
@awaagrikh8331 3 года назад
Hi Andreas, I want to use the RGB sensor to detect the color of the water in a transparent tube, will it work? My idea is to read the PH/Alkalinity level of water of water test kit. If it works, which is the best RGB sensor choice?
@AndreasSpiess
@AndreasSpiess 3 года назад
I cannot answer you question. It is too specific, and I do not have a lot of experience with such sensors. Maybe google knows?
@renatodioses3680
@renatodioses3680 10 месяцев назад
excellent video, what would be the best sensor to measure the color of a liquid inside a test tube?
@AndreasSpiess
@AndreasSpiess 10 месяцев назад
I do not know :-(
@billxby
@billxby Год назад
Hi, thanks for the video! Do you know where I can get an IR filter for the TCS3200?
@AndreasSpiess
@AndreasSpiess Год назад
No, I never had to buy one.
@1_HighDuke
@1_HighDuke 3 года назад
Has anyone found a good way to calculate W/m2 or umol/m2/s from an affordable light sensor? I'm asking because these are the main units used in agriculture for light intensity and I'm working on a greenhouse project.
@AndreasSpiess
@AndreasSpiess 3 года назад
I think the only way to get results with these sensors is by comparing it with a calibrated sensor. I only use it to measure relative, not absolute values
@jwracingteam
@jwracingteam 4 года назад
which would be best sensitivity to detect light in bedroom when sleeping from curtain leakage?
@jwracingteam
@jwracingteam 4 года назад
ive gone for the Adafruit TSL2591 High Dynamic Range Digital Light Sensor as the Lux range is from 0.000118 to 88,000
@theScottishAlien
@theScottishAlien 4 года назад
Grüezi from Zurich! I have a project currently based heavily on home sensors for monitoring house plants. Light is obviously an important variable to monitor so have been prototyping with lots of different breakout boards. Currently developing the design on a PCB and I've found that a lot of the lux sensors are hard to source when building yourself. Currently, I'm working with the BH1715 (poor results), VEML6030 (excellent I2C), and the TEMT6000 (analog, quite primitive). Would love to experiment with the UV as this is also an important aspect of plant health so will try to integrate a few extra sensors into the next version!
@AndreasSpiess
@AndreasSpiess 4 года назад
Good project. A lot to learn, I think.
@theScottishAlien
@theScottishAlien 4 года назад
@@AndreasSpiess So much, always. Just finished up the design this weekend and have the VEML6075 UV sensor onboard :D. Once i'm at a point where it's worth seeing, I'll send you one for your mailbag!
@paulbunyanvideo
@paulbunyanvideo 4 месяца назад
what wavelength laser and what detector would you recommend for an outdoor laser wire during daylight hours?
@AndreasSpiess
@AndreasSpiess 4 месяца назад
They usually use IR lasers with filters.
@arshaver
@arshaver 4 года назад
At 10:19 you're talking about the TSL2591 as not recommended, but the red box on the left doesn't include that sensor. Looking at the AMS website, it actually says "Industry leading dynamic range which drives both ultra low light sensitivity and bright sunlight operation" about that sensor.
@AndreasSpiess
@AndreasSpiess 4 года назад
I just read the content of this website. It is more for professional use in products
@ligius3
@ligius3 4 года назад
Clear 10mm LED, two digital pins = very good detection of sunlight levels. In a nutshell, the LED is capacitively charged by feeding a reverse voltage into it (pins set to OUTPUT), then the decay of that voltage is measured as it slowly leaks into the (now) INPUT pins of the MCU. The more light there is, the faster it discharges. I've used it successfully for quite a few projects, no ADC needed.
@AndreasSpiess
@AndreasSpiess 4 года назад
Good idea. Thanks!
@marcelachternaam9249
@marcelachternaam9249 4 года назад
Do you have an example of this?
@ligius3
@ligius3 4 года назад
@@marcelachternaam9249 Search for "LED as light sensor". The sparkfun article explains how it works, the instructable article shows a sketch, the stackoverflow describes the principle, pasting the text here: Set Port A output high set Port B output low // this makes sure the led is discharged wait 1mS set Port A output low set Port B output high // reverse bias and charge wait 1mS set Port B as input // Port B is high impedance input time how long for Port B to read low
@hummingbird2520
@hummingbird2520 3 года назад
For analysis of food & fruit contents like fat carbohydrates etc which sensor is good for getting the wavelength of 700- 2300nm
@AndreasSpiess
@AndreasSpiess 3 года назад
I do not know these NIR sensors. I only used IR transistors which work on 900nM. The AS7263 covers 600-900nm for example.
@AkosLukacs42
@AkosLukacs42 4 года назад
Hi Andreas, can you recommend a material, or maybe a ready product for outdoor UV sensor housing? AFAIK even regular glass blocks some of UV radiation. So just gluing together some glass may not be the best idea. Or could just measure the decrease of measured values behind the cover, and try to compensate for that?
@AndreasSpiess
@AndreasSpiess 4 года назад
Even glas blocks some UV the readings still should be ok if the attenuation is constant. I have no calibrated UV meter, so calibration will anyway not be possible for teh moment.
@Pixel_K
@Pixel_K 4 года назад
Hello, I use the MAX44009 lux sensor from Maxim integrated, widely available from Aliexpress. I use it to adapt the brightness of my displays
@AndreasSpiess
@AndreasSpiess 4 года назад
Thanks for the info!
@SimonCoates
@SimonCoates 4 года назад
I use the same sensor on a GY-49.breakout board. However every Arduino library for the MAX44009 I downloaded had the same mistake in reading lux levels correctly. Looks like everyone copied the same error from the original library 😁 It's an excellent lux level sensor with a huge 22 bit dynamic range, ultra low current and IR/UV blocking filters.
@Pixel_K
@Pixel_K 4 года назад
here is the code I use, is it okay ? #define DATA_LUX_HIGH 0x03 #define DATA_LUX_LOW 0x04 float MAX44009::getLux(void) { int luxHigh = readI2CAddr(DATA_LUX_HIGH); int luxLow = readI2CAddr(DATA_LUX_LOW); int exponent = ( luxHigh & 0xf0 ) >>4; int mant = ( luxHigh & 0x0f )
@SimonCoates
@SimonCoates 4 года назад
// Request 2 bytes of data Wire.requestFrom(0x4A, 1); // Read 2 bytes of data luminance msb, luminance lsb if (Wire.available() == 1) { data[1] = Wire.read(); } // Convert the data to lux int exponent = (data[0] & 0xF0) >> 4; int mantissa = ((data[0] & 0x0F)
@kanapkazpasztetem
@kanapkazpasztetem 4 года назад
The uni-t lux sensor has a white plastic lens, I wonder if it does affect readings in any significant way? Since if we were "to deploy" a device with a light sensor it should be covered with something to protect it imho. Btw. I'm running like 2 years now a LDR to do stuff on sunset/sunrise and after fine tuning of sensitivity levels in software it works fine. The program also checks the time so the trigger runs only these 2 times a day.
@AndreasSpiess
@AndreasSpiess 4 года назад
I assume they took the color of the plastic into account when they built the device. So far I do not yet know how to protect the sensors. I tend to use glas, but currently all shops are loched down :-(
@zakarikous1
@zakarikous1 4 года назад
Hello sir, thank you very much for this video, I need advice from you, I need to build a sonometer with decibel and i need a sensor that can give me analog values of sound, can you recommend me a sensors ?? thanks
@AndreasSpiess
@AndreasSpiess 4 года назад
I do not know, but a quick goolge search showed that microphones or piezo elements are used for this purpose.
@pankajshah6591
@pankajshah6591 9 месяцев назад
Hello sir Thanks for informative video Require your guidance to suggest sensor to detect nearly 100 colours Thanks
@AndreasSpiess
@AndreasSpiess 9 месяцев назад
I only show my knowledge in my videos...
@juancarlossoto3748
@juancarlossoto3748 2 года назад
Hello Andreas, how are you? Your video is excellent, but I need to make a question and it is, how I do to calibrate the sensor of light TSL2561? Thank you for making this video, Greeting
@AndreasSpiess
@AndreasSpiess 2 года назад
As always with calibrating you need a precise instrument and compare the results. I do not know such instruments, but I am sure they exist.
@dimgwolukze140
@dimgwolukze140 4 года назад
I recently use VEML6030/VEML7700 ALS sensor with perfect human eye response. Also have a look about VEML6040 RGB sensor. All from Vishay. Nice packaging, but a little bad interface
@AndreasSpiess
@AndreasSpiess 4 года назад
Thank you for sharing your experience!
@EwertonMoreira80
@EwertonMoreira80 3 года назад
Do you think these RGB sensors would work well to read liquids? if this is the case, do you think we should add extra ilumination?
@AndreasSpiess
@AndreasSpiess 3 года назад
I am no specialist in this matter. I think you have to try your particular scenario and also if you want to use reflected light or shine through the liquid.
@olaoluwaraji2335
@olaoluwaraji2335 3 года назад
Can the TCS34725 detect the colour of liquids in transparent containers accurately?
@AndreasSpiess
@AndreasSpiess 3 года назад
I never tried. But if you shine light through it I assume it would work. But it only has 4 filters. Read the datasheet first.
@josephreyes1743
@josephreyes1743 3 года назад
Hi we are trying to build an indoor lux meter. What sensor should we use?
@AndreasSpiess
@AndreasSpiess 3 года назад
I never thought about that. Just measure the range you need and check the different datasheets.
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