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  • เผยแพร่เมื่อ 28 มี.ค. 2024
  • 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
    If you want to support the channel, please use the links below to start your shopping. No additional charges for you, but I get a commission (of your purchases the next 24 hours) to buy new stuff for the channel
    My Amazon.com shop: www.amazon.com/shop/andreassp...
    For Banggood bit.ly/2jAQEf4
    For AliExpress: bit.ly/2B0yTLL
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    For Amazon UK: amzn.to/2mxBaJf
    For ebay.com: ebay.to/2DuYXBp
    profile.php?...
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    www.instructables.com/member/...
    Please do not try to Email me or invite me on LinkedIn. These communication channels are reserved for my primary job
    As an Amazon Associate, I earn from qualifying purchases
  • วิทยาศาสตร์และเทคโนโลยี

ความคิดเห็น • 432

  • @bm830810
    @bm830810 4 ปีที่แล้ว +20

    Hi, the text at 4:00 is too small,
    and thanks for the great content

    • @AndreasSpiess
      @AndreasSpiess  4 ปีที่แล้ว +13

      Thanks for the feedback. I started to use OBS and did not get everything right. Next time I will change it.

    • @TheHellis
      @TheHellis 4 ปีที่แล้ว

      @@AndreasSpiess you can just crop the view in your video editing software.

    • @gg-gn3re
      @gg-gn3re 4 ปีที่แล้ว +1

      @@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 ปีที่แล้ว

      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 ปีที่แล้ว +48

    I like your videos, Andreas. They have a good "signal/noise ratio"

  • @benmeadors6799
    @benmeadors6799 4 ปีที่แล้ว +15

    These sensor / board comparison videos are my favorite. They're always informative and help me out in my projects.

  • @martinsauerteig4882
    @martinsauerteig4882 4 ปีที่แล้ว +30

    Congrats: You hit the 200.000!! And again a great Video. Thanks for that and stay healthy. Have great easter holidays.

    • @AndreasSpiess
      @AndreasSpiess  4 ปีที่แล้ว +13

      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 ปีที่แล้ว +1

      Yes he deserve for it

  • @zrxav
    @zrxav ปีที่แล้ว

    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  ปีที่แล้ว

      You are welcome. Glad my channel is helpful for you!

  • @NullPointer
    @NullPointer 4 ปีที่แล้ว +4

    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 ปีที่แล้ว +1

      Thank you! And good luck with your project.

  • @ramoncomellas4245
    @ramoncomellas4245 4 ปีที่แล้ว +9

    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 ปีที่แล้ว +1

      Glad you enjoyed it! These compilations help me too ;-)

  • @mrmx2k
    @mrmx2k 4 ปีที่แล้ว +2

    Congrats Andreas!! Your videos should be within a Public Electronic Wikipedia as a reference! Greetings from Spain!

    • @AndreasSpiess
      @AndreasSpiess  4 ปีที่แล้ว +1

      Maybe one day ;-) Thank you

  • @acpck
    @acpck 4 ปีที่แล้ว +2

    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.

  • @marcdraco2189
    @marcdraco2189 3 ปีที่แล้ว

    I love the way Andreas shares his own mistakes and that self-deprecating humour is wonderful!

    • @AndreasSpiess
      @AndreasSpiess  3 ปีที่แล้ว

      Thank you. We all make mistakes. The difference is how we deal with it...

    • @marcdraco2189
      @marcdraco2189 3 ปีที่แล้ว

      ​@@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 TH-cam instructors (and teachers in general) like you out there. Humanity would be far less self-destructive if there were.

  • @AjinkyaMahajan
    @AjinkyaMahajan 4 ปีที่แล้ว +4

    You have covered all sensors in my treasure. Nice explanation. Thanks !!! ✨✨✌

  • @MIsam-fv9kb
    @MIsam-fv9kb 4 ปีที่แล้ว +1

    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

  • @andrewbeasley
    @andrewbeasley 4 ปีที่แล้ว

    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 ปีที่แล้ว

      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 :-(

  • @dirk-janfaber
    @dirk-janfaber 4 ปีที่แล้ว +2

    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 ปีที่แล้ว

      I looked at the sensor in the past, but was driven away by the high price. Now I ordered one. Thanks for the tip!

  • @juanrivera4938
    @juanrivera4938 4 ปีที่แล้ว +1

    Worked so hard trying to fix the APDS9960 with no luck, thank you!!!

  • @erikschatz348
    @erikschatz348 4 ปีที่แล้ว +2

    Thanks, Andreas! That will help me for an advanced line following modul. See you next UKW conference hopefully!

    • @AndreasSpiess
      @AndreasSpiess  4 ปีที่แล้ว

      We will see if hte borders are open till then ;-)

  • @christosmoutevelis4896
    @christosmoutevelis4896 4 ปีที่แล้ว +1

    Happy Easter, Andreas!
    Thanks for another great video!

  • @sbmuthuraman
    @sbmuthuraman 2 ปีที่แล้ว

    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 ปีที่แล้ว +1

      Thank you for your nice words!

  • @yoginiprabhu8048
    @yoginiprabhu8048 3 ปีที่แล้ว

    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!!

  • @darrick.S
    @darrick.S 4 ปีที่แล้ว

    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 ปีที่แล้ว

      Maybe you look also at the TOF and Lidar sensors.

  • @klassichd10
    @klassichd10 4 ปีที่แล้ว +1

    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 ปีที่แล้ว +1

      This is a very interesting concept! Maybe I add a few additional sensors to my Lux meter and compare their readings...

    • @lohikarhu734
      @lohikarhu734 4 ปีที่แล้ว

      @@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 3 ปีที่แล้ว

      I would love to see a Video on different sensor types and comparing the usefulness for this scenario.

  • @aruns349
    @aruns349 4 ปีที่แล้ว

    Thanks for a lovely video on light sensors! Really appreciate your work and dedication.

  • @daves3819
    @daves3819 4 ปีที่แล้ว +4

    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.

  • @asiw
    @asiw 4 ปีที่แล้ว

    Very comprehensive as usual and a superb reference for the future.

  • @juancarlossoto3748
    @juancarlossoto3748 2 ปีที่แล้ว

    Sure, Maaaaan. I like your form to explaint the sensors that I use, thank you very much

  • @3xAudio
    @3xAudio 4 ปีที่แล้ว +1

    Always interesting ideas to get inspiration in the Arduino community thanks for sharing.

  • @PALTUBABY
    @PALTUBABY 4 ปีที่แล้ว +2

    As always very informative and useful. Thank you Andreas :)

  • @avejst
    @avejst 4 ปีที่แล้ว +1

    Great test as always
    Thanks for sharing 👍😁

  • @bf945
    @bf945 2 ปีที่แล้ว

    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 ปีที่แล้ว

      You can find other UV sensors. Just make sure that the protection does not block UV (e.g. Glas blocks UV)

  • @gustavoenriquejimenez8098
    @gustavoenriquejimenez8098 2 ปีที่แล้ว

    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 ปีที่แล้ว

      Thank you for the tip. I ordered one.

  • @r1273m
    @r1273m 4 ปีที่แล้ว +1

    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 ปีที่แล้ว

      Yea, the world became simpler and better in this respect.

  • @dave_dennis
    @dave_dennis 4 ปีที่แล้ว

    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 ปีที่แล้ว +1

      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.

  • @BerndFelsche
    @BerndFelsche 4 ปีที่แล้ว +2

    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 ปีที่แล้ว

      I assume they use the same effect as the phototransistors. But I di not know that they are very sensitive.

  • @mr.anonymous298
    @mr.anonymous298 3 ปีที่แล้ว

    Thanks for such a nice sensors comparison video.

  • @molitovv
    @molitovv 4 ปีที่แล้ว +1

    This video is right up my alley

  • @niklasjohansson6195
    @niklasjohansson6195 4 ปีที่แล้ว

    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.

  • @McTroyd
    @McTroyd 4 ปีที่แล้ว +8

    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 ปีที่แล้ว +1

      No hurry. Logistics anyway does not work properly for the moment. I am waiting and waiting...

  • @JohanSchmidt85
    @JohanSchmidt85 4 ปีที่แล้ว

    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 ปีที่แล้ว

      Here is a link wiki.analog.com/university/courses/electronics/electronics-lab-led-sensor

    • @AndreasSpiess
      @AndreasSpiess  4 ปีที่แล้ว

      Thank you for the link!

  • @matneu27
    @matneu27 4 ปีที่แล้ว +1

    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 😁

  • @Beeblzaphod
    @Beeblzaphod 4 ปีที่แล้ว +1

    Bloody hell, what a great video :-) Thanks a 1 000 000 for the content, very interesting and illuminating informations.

  • @PhG1961
    @PhG1961 4 ปีที่แล้ว +13

    Nice video. Btw, don't worry, my wife also laughs with my experiments quite often.... so you're not alone ;-)

    • @AndreasSpiess
      @AndreasSpiess  4 ปีที่แล้ว +1

      Good to hear! Not really dangerous for usi, I think ;-)

  • @et752
    @et752 4 ปีที่แล้ว

    Very comprehensive review.. .quite helpful to have for future reference

  • @meinsda5983
    @meinsda5983 4 ปีที่แล้ว +1

    Great Work Andreas!

  • @AkosLukacs42
    @AkosLukacs42 4 ปีที่แล้ว

    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 ปีที่แล้ว +1

      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.

  • @electronic7979
    @electronic7979 4 ปีที่แล้ว +1

    a useful and educational video. liked it very much. The information you provided useful very well for me.

    • @AndreasSpiess
      @AndreasSpiess  4 ปีที่แล้ว +1

      Glad to hear that! Have a nice Sunday!

  • @paulbunyanvideo
    @paulbunyanvideo หลายเดือนก่อน

    what wavelength laser and what detector would you recommend for an outdoor laser wire during daylight hours?

    • @AndreasSpiess
      @AndreasSpiess  หลายเดือนก่อน

      They usually use IR lasers with filters.

  • @awaagrikh8331
    @awaagrikh8331 2 ปีที่แล้ว

    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  2 ปีที่แล้ว

      I cannot answer you question. It is too specific, and I do not have a lot of experience with such sensors. Maybe google knows?

  • @visperaschristopheremmanuel513
    @visperaschristopheremmanuel513 2 ปีที่แล้ว

    It is helpful for my quantum photonics research.

  • @andresbenitez77
    @andresbenitez77 4 ปีที่แล้ว +1

    I really like the last sensor

  • @rajeshbharadwaj6418
    @rajeshbharadwaj6418 4 ปีที่แล้ว

    Hi Andreas, could you please recommend if any of the sensors that you showed will work for sun insolation in lux for solar panel application. I need to create a correlation of amount of sunlight vs solar panel power output. I am not sure what kind of sensor will work. Should it be RGB +IR+UV or just RGB. Anybody is welcome to answer. Thanks

    • @AndreasSpiess
      @AndreasSpiess  4 ปีที่แล้ว

      I also do not know. Maybe you consult the datasheets of your solar panels to find out which part of the spectrum fits your needs best?

    • @PranavSharma2504
      @PranavSharma2504 4 ปีที่แล้ว

      I think a lux sensor would be more applicable to your setup.

    • @NiHaoMike64
      @NiHaoMike64 4 ปีที่แล้ว

      Just glue a small solar cell to a heatsink (to negate the effects of self heating) and measure the current output.

  • @arshaver
    @arshaver 3 ปีที่แล้ว

    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  3 ปีที่แล้ว

      I just read the content of this website. It is more for professional use in products

  • @1_HighDuke
    @1_HighDuke 3 ปีที่แล้ว

    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 ปีที่แล้ว

      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

  • @PranavSharma2504
    @PranavSharma2504 4 ปีที่แล้ว

    @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 ปีที่แล้ว +1

      node red should be able to do some simple if-then-else to avoid wrong extractions...

  • @BenjaminEggerstedt
    @BenjaminEggerstedt 4 ปีที่แล้ว +3

    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 ปีที่แล้ว +1

      Ich bin etwas spät für Osterwünsche. Dankeschön! Betreffend 200'000: Da denke ich in 10 dB und konzentriere mich auf die Million ;-)

  • @zakarikous1
    @zakarikous1 3 ปีที่แล้ว +1

    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  3 ปีที่แล้ว

      I do not know, but a quick goolge search showed that microphones or piezo elements are used for this purpose.

  • @lottery248
    @lottery248 4 ปีที่แล้ว

    congrats on 200k

  • @hummingbird2520
    @hummingbird2520 2 ปีที่แล้ว

    For analysis of food & fruit contents like fat carbohydrates etc which sensor is good for getting the wavelength of 700- 2300nm

    • @AndreasSpiess
      @AndreasSpiess  2 ปีที่แล้ว

      I do not know these NIR sensors. I only used IR transistors which work on 900nM. The AS7263 covers 600-900nm for example.

  • @jwracingteam
    @jwracingteam 4 ปีที่แล้ว +1

    which would be best sensitivity to detect light in bedroom when sleeping from curtain leakage?

    • @jwracingteam
      @jwracingteam 4 ปีที่แล้ว

      ive gone for the Adafruit TSL2591 High Dynamic Range Digital Light Sensor as the Lux range is
      from 0.000118 to 88,000

  • @tonmommers7942
    @tonmommers7942 4 ปีที่แล้ว

    Very usefull these overviews of sensors.

  • @bx8700
    @bx8700 ปีที่แล้ว

    Hi, thanks for the video! Do you know where I can get an IR filter for the TCS3200?

  • @juancarlosnarvaez3875
    @juancarlosnarvaez3875 4 ปีที่แล้ว

    Good video Andreas. Greetings from Ensenada Mexico

  • @ManishMoorjmalani
    @ManishMoorjmalani 3 ปีที่แล้ว

    great work Andres

  • @tablatronix
    @tablatronix 4 ปีที่แล้ว +1

    wow , I thought I had alot of light sensor modules to test, wow Some of these I have never seen.

    • @AndreasSpiess
      @AndreasSpiess  4 ปีที่แล้ว

      And during cleanup I found two additional ones ;-)

  • @paede81
    @paede81 4 ปีที่แล้ว

    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 ปีที่แล้ว

      Another viewer in the comments below reported that this one maxes out quite early. Do you have a trick?

    • @paede81
      @paede81 4 ปีที่แล้ว

      @@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

  • @MultiPowerLoRd
    @MultiPowerLoRd 3 ปีที่แล้ว

    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 ปีที่แล้ว

      Thank you for sharing your experience!

  • @EwertonMoreira80
    @EwertonMoreira80 3 ปีที่แล้ว

    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 ปีที่แล้ว

      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.

  • @christopherlawes9286
    @christopherlawes9286 3 ปีที่แล้ว

    Great vid Andreas!
    I would really love instructional on how to make a colorimeter with ESP32.

    • @AndreasSpiess
      @AndreasSpiess  3 ปีที่แล้ว

      This is a very special area, so the chance I will cover it is small.

    • @christopherlawes9286
      @christopherlawes9286 3 ปีที่แล้ว

      @@AndreasSpiess Sad to hear but, thanks for the reply and thanks for your great videos.

  • @typxxilps
    @typxxilps 3 ปีที่แล้ว

    really great and extraordinary content ... but have just a view sensors you already mentioned.

  • @eniregnat
    @eniregnat 3 ปีที่แล้ว

    What sensor would you use to detect color or brightness change on a little area (i.e. 1 cm2) on an LCD screen? Sensing speed is important. The faster the better. Color is unimportant, I need to detect if anything changed on the little area being watched or not.
    Sensor size is the smaller the better.

    • @AndreasSpiess
      @AndreasSpiess  3 ปีที่แล้ว

      I do not know. Maybe you need a lens in addition

    • @eniregnat
      @eniregnat 3 ปีที่แล้ว

      @@AndreasSpiess Thank you!

  • @Pixel_K
    @Pixel_K 4 ปีที่แล้ว +2

    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 ปีที่แล้ว

      Thanks for the info!

    • @SimonCoates
      @SimonCoates 4 ปีที่แล้ว +1

      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 ปีที่แล้ว

      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 ปีที่แล้ว

      // 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)

  • @GhVost
    @GhVost 4 ปีที่แล้ว

    Frohe Ostern, Andreas!

  • @theScottishAlien
    @theScottishAlien 4 ปีที่แล้ว

    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 ปีที่แล้ว +1

      Good project. A lot to learn, I think.

    • @theScottishAlien
      @theScottishAlien 4 ปีที่แล้ว

      @@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!

  • @josephreyes1743
    @josephreyes1743 3 ปีที่แล้ว

    Hi we are trying to build an indoor lux meter. What sensor should we use?

    • @AndreasSpiess
      @AndreasSpiess  3 ปีที่แล้ว

      I never thought about that. Just measure the range you need and check the different datasheets.

  • @renatodioses3680
    @renatodioses3680 7 หลายเดือนก่อน

    excellent video, what would be the best sensor to measure the color of a liquid inside a test tube?

    • @AndreasSpiess
      @AndreasSpiess  7 หลายเดือนก่อน

      I do not know :-(

  • @olaoluwaraji2335
    @olaoluwaraji2335 3 ปีที่แล้ว

    Can the TCS34725 detect the colour of liquids in transparent containers accurately?

    • @AndreasSpiess
      @AndreasSpiess  3 ปีที่แล้ว

      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.

  • @flibustieros
    @flibustieros 4 ปีที่แล้ว

    Gz with 200k subscribers. Go to 500k!

    • @AndreasSpiess
      @AndreasSpiess  4 ปีที่แล้ว

      1 million is my next goal ;-)

  • @kanapkazpasztetem
    @kanapkazpasztetem 4 ปีที่แล้ว

    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 ปีที่แล้ว

      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 :-(

  • @mallampalliprasad4019
    @mallampalliprasad4019 3 ปีที่แล้ว

    hi i am using a GUVA-S12SD an UV analaog sensor with a cubecell, i tried few steps of my own and connected to it and able see data in serial monitor of arduino, but even if i remove the sensor connection it its still showing some data in serial monitor

    • @AndreasSpiess
      @AndreasSpiess  3 ปีที่แล้ว

      Maybe you divide your system into two parts: First test the sensor and the Cubecell separately to find where the error happens.

    • @mallampalliprasad4019
      @mallampalliprasad4019 3 ปีที่แล้ว

      @@AndreasSpiess thanks that really helped and i am able to see sensor data in arduino, if u know any program where i can see this data in ttn. or any relative

  • @maxtester8824
    @maxtester8824 4 ปีที่แล้ว +2

    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 ปีที่แล้ว +1

      Those are nowhere near accurate enough. You may look at some TOF sensors

    • @maxtester8824
      @maxtester8824 4 ปีที่แล้ว

      D Stanoev thanks for the feedback!

    • @111chicane
      @111chicane 4 ปีที่แล้ว

      @@maxtester8824 Welcome!

  • @hoegge
    @hoegge 2 ปีที่แล้ว

    Great video. What can one use to detect rapidly changing / digital light signals?

    • @AndreasSpiess
      @AndreasSpiess  2 ปีที่แล้ว

      I assume phototransistors would be ok. Depends on the frequency, of course. The datasheets are your friends.

  • @albertox0404
    @albertox0404 4 ปีที่แล้ว +3

    Hi Andreas, nice video like always.
    I have a question for you :)
    On the ESP32, if someone creates a wifi Network with the same SSID and the ESP32 tries to connect to it, the password that it sends to the router is Encripted? Or the fake Router can know your password in plain text with this kind of attack?
    Thank you for your amazing videos.
    Thx from Spain ;)

    • @AndreasSpiess
      @AndreasSpiess  4 ปีที่แล้ว +1

      This has nothing to do with ESP32. This is a Wi-Fi security question. ESP32 uses the same technology as your Smarphone etc. So it should be save if your your router setup is ok

    • @RobertShaverOfAustin
      @RobertShaverOfAustin 4 ปีที่แล้ว

      It would be very vulnerable if your password were sent in plain text over WiFi so I'm very sure it is encrypted.

    • @benni5541
      @benni5541 4 ปีที่แล้ว +2

      The current network encryption (wpa2) is still holding strong and works with your shared network key. If your esp want acess to the network through the access point is requests a random number as a challange and then the esp computes a couple of computaions where the random number the network key and his own mac adress is needed. The esp will send his encrypted random number back to the access point for evaluation and voila if the key was right you are in. Be carful in reality its even more complicated with more numbers and a 4way handshake but you get the point.

    • @Mr.Leeroy
      @Mr.Leeroy 4 ปีที่แล้ว

      average WiFi network is probably more susceptible to bruteforce attacks since people don't bother with long shared keys with enough entropy. Not sure about preventative mechanisms in common standards, though.

  • @jonnyenglisch1026
    @jonnyenglisch1026 4 ปีที่แล้ว +1

    Frohe Ostern Andreas!

    • @AndreasSpiess
      @AndreasSpiess  4 ปีที่แล้ว

      Danke. Leider bin ich für ein "Ebenfalls" zu spät :-(

  • @nonicnik
    @nonicnik 4 ปีที่แล้ว

    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 ปีที่แล้ว

      Interesting sensor! Ordered ;-) Thank you

  • @juancarlossoto3748
    @juancarlossoto3748 2 ปีที่แล้ว

    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 ปีที่แล้ว +1

      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.

  • @LeifNelandDk
    @LeifNelandDk 4 ปีที่แล้ว

    Have you considered putting sensors in solar garden lights? You get a solar panel, a battery and an enclosure for a relatively cheap price. For instance temperature and moisture measurements in the greenhouse.
    You probably need a buck-converter to get the 3.3v needed from a 1.2NiCd or 3.2LiOn, but still.
    If the ESP went into deep sleep, and only sends occasionally, I guess most lamps could supply the power.

    • @AndreasSpiess
      @AndreasSpiess  4 ปีที่แล้ว

      Good idea. I started to build a combination of a Lux, an UV, and an RGB sensor. In addition it communicates via 2.4GHz LoRa. The MPU is an Arduino Mini which Igels it’s Takt from an RTC Module. Still a lot of LEDs, so I do not know the current consumption. But it needs some space.

  • @bennydmduiken
    @bennydmduiken 2 ปีที่แล้ว

    Hi,
    I wpould like to build something simple but I can't find a clue to do it. I want to know if the light is ON in the garage and another room. Setup: two small ESP8266 boards that I can pot into deep sleep. When the light is on they send data to an Arduino board (eg. D1 WEMOS so that a LED starts blinking(maybe connected to the D1...D9 outputs. I just want to use my personal wifi network. No IOT MQTT etch do display on iPhone etc.What I find on the internet is that they aal use ESP32 and IOT and MQTT...it is to complicated .
    Can you put me on the way??? Maybe a list of your YT-video's I need to watch? Thanks

    • @AndreasSpiess
      @AndreasSpiess  2 ปีที่แล้ว

      I would chop your design in simple blocks and start with one block. An ESP8266 is quite versatile, but these days I would probably start with an ESP32 because it has more possibilities and is a little easier to use.
      For each block you will find examples and tutorials.

  • @dimgwolukze140
    @dimgwolukze140 3 ปีที่แล้ว

    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  3 ปีที่แล้ว

      Thank you for sharing your experience!

  • @morpheusde
    @morpheusde 4 ปีที่แล้ว

    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 ปีที่แล้ว

      Ich bin leider etwas spät für Osterwünsche. Danke! Ja, auf diesem Kanal sind viele ähnlich Interessierte Leute anzutreffen. Ich finde das sehr schön. TH-cam sei dank können wir uns so finden und etwas vernünftiges unternehmen...

  • @keilo88
    @keilo88 4 ปีที่แล้ว

    What are your thoughts on detecting UVC 200-290 nm range?
    With Covid19 there are lots of fake UVC disinfection lambs around, and wondering the cost effective ways to measure UVC range.

    • @AndreasSpiess
      @AndreasSpiess  4 ปีที่แล้ว

      There are quite a few comments about this topic. I did not find cheap sensors.

  • @PetrusJansen7
    @PetrusJansen7 2 ปีที่แล้ว

    Hi Andreas, fantastic video like always!
    Do you have a sensor you can recommend as the best option for measuring LUX and PAR for plants under a grow light?

    • @AndreasSpiess
      @AndreasSpiess  2 ปีที่แล้ว

      There are many Lux meters around. I do not know which is best. All are relative and have to be calibrated...

    • @PetrusJansen7
      @PetrusJansen7 2 ปีที่แล้ว

      @@AndreasSpiess thanks Andreas. Was hoping to find some good information of a comparison test on the internet for lux sensors pair d with Arduino to measure "grow lights" but cannot find a good source. Plants require different light intensity at different stages and it would be great to be able to measure this accurately and automate :)

    • @AndreasSpiess
      @AndreasSpiess  2 ปีที่แล้ว +1

      I once made a video about a spectrometer. Maybe this helps ?

  • @micronetwork
    @micronetwork 4 ปีที่แล้ว

    Andreas. what if you connect some of your sensors with ESP32 and your New LoRa chip from #309 Mailbag Part2? Looking forward for the setup of this chip, as I have ordered it also :-)

    • @AndreasSpiess
      @AndreasSpiess  3 ปีที่แล้ว

      Maybe you watch my today's video?

    • @micronetwork
      @micronetwork 3 ปีที่แล้ว

      @@AndreasSpiess Andreas, this was more than I could ever hope for! Thank you so much.

  • @raymondtwm
    @raymondtwm 4 ปีที่แล้ว +1

    Thanks! This video useful for me.I wonder how to create a strobe lux meter

    • @AndreasSpiess
      @AndreasSpiess  4 ปีที่แล้ว +1

      I assume you need a sample and hold circuit used in ADCs to hold the maximum voltage of a sensor.

    • @raymondtwm
      @raymondtwm 4 ปีที่แล้ว

      @@AndreasSpiess Thx

  • @pankajshah6591
    @pankajshah6591 6 หลายเดือนก่อน

    Hello sir
    Thanks for informative video
    Require your guidance to suggest sensor to detect nearly 100 colours
    Thanks

    • @AndreasSpiess
      @AndreasSpiess  6 หลายเดือนก่อน

      I only show my knowledge in my videos...

  • @nathanielbecker9227
    @nathanielbecker9227 ปีที่แล้ว

    Does anyone know if any of these light sensors are plug and play with displaycal (opensource software)?

    • @AndreasSpiess
      @AndreasSpiess  ปีที่แล้ว

      I do not know :-(

    • @nathanielbecker9227
      @nathanielbecker9227 ปีที่แล้ว

      I'm playing around with the idea of creating my own calibration tools as the do it yourself market seems to be finally maturing... it'd be nice to work with the open source computer side, but it might be more feasible to just hook up a display to an arduino or raspberry Pi and have a completely discrete unit...

  • @pawel753
    @pawel753 4 ปีที่แล้ว

    I watch all your videos but don't remember covering VL53L0X. When was it? Tried to find it but unsuccessful. Thanks

  • @alanmcrae8594
    @alanmcrae8594 3 ปีที่แล้ว

    Can I ask you a question about UV-C sensors?
    I built a germicidal UV-C sterilizer from an old microwave oven and a UV-C mercury vapor water sterilization bulb, but I am wondering about the actual 254nm irradiance level at the disinfection target distance. The manufacturer has ignored my requests for irradiance specs on their bulb, and reviewers like BigClive have found that many UV-C bulbs from China are fake and give off little or no UV-C light. I'd like to get a reasonably accurate UV-C irradiance reading without investing in a UV-C laboratory photometer.
    I did a little research and I found the 1918 ANALOG UV SENSOR BREAKOUT Board and that looked promising except that it has very poor sensitivity in the germicidal UV-C wavelength range. But then I saw that the GUVC-S10GD photodiode has a spectral range of 220nm - 280nm, which is ideal!
    Do you think the GUVA-S12SD photodiode on the 1918 ANALOG UV SENSOR BREAKOUT Board could be de-soldered and replaced with the GUVC-S10GD photodiode (or the GUVC-S40GD, or something similar) to get a better UV-C sensor breakout for germicidal UV-C measurement projects?
    NOTE: I don’t have enough electronics experience yet to understand what sorts of modifications to breakout boards are possible, so I’m reaching out to engineers & makers who have more expertise. It would be great to open source a diy project for building a UV-C photometer around an Arduino and some inexpensive off-the-shelf components.

    • @AndreasSpiess
      @AndreasSpiess  3 ปีที่แล้ว

      I have no experience with such sensors, so I am no help

  • @daromee
    @daromee 4 ปีที่แล้ว

    Thanks in advance for your comments

  • @goofycker
    @goofycker 4 ปีที่แล้ว +1

    Welcome to the game of sensors...

  • @willytepes27
    @willytepes27 3 ปีที่แล้ว

    You can get filters for most wavelengths which is handy in some projects to filter out other types of light you are not interested in measuring and which can interfere with your results.

    • @AndreasSpiess
      @AndreasSpiess  3 ปีที่แล้ว +1

      You are right. We live in a very good time.

  • @matmay
    @matmay 3 ปีที่แล้ว

    do you have recommendations for light barriers?