thanks. here is the latest video with high accuracy sensor kzfaq.info/get/bejne/oLRoabOEpq6xkqs.html

@MUNKAZA TIP, you are welcome. Thank you for your comments.

مرحبا بك. إن شاء الله سأفعل ذلك.

Thank you.

you are very welcome.

Please search my channel for the word “multiple “ and apply the same principle to your project even though it might be a different module.

I am glad you found it useful.

You are welcome. Good luck.

you are welcome. Good day.

Thanks. I don't understand this software which I can't even pronounce, is not only it is available for free but it is insanely expensive, why I got comment about it? $6000 is the cheapest version. I am in favor of Open Source or at least reasonably priced software. They don't have a free version with limited capability. Trail is just spying software to collect information on you.

you are welcome.

you are welcome. See related videos on MLX90614 here kzfaq.infosearch?query=MLX90614

Yes it can but not just like this. you will need to use for very short distance or use some lens to make angle of view narrow. I have provided the datasheet, perhaps you need to have a look at it.

Hi, with a simple search I found this github.com/sparkfun/SparkFun_MLX90614_Arduino_Library/blob/master/examples/Example4_Change_i2c_Address/Example4_Change_i2c_Address.ino which was mentioned in here learn.sparkfun.com/tutorials/mlx90614-ir-thermometer-hookup-guide

Hello, please watch this latest video with more details kzfaq.info/get/bejne/oLRoabOEpq6xkqs.html

After making this long range MLX90614 video kzfaq.info/get/bejne/oLRoabOEpq6xkqs.html I learned that this sensor (short range) is like or direct contact or 1 to 2cm. So get the better version if you want longer range and accuracey.

​@@robojax I am using a plastic lens to reduce the FOV of sensor, but there is considerable decline in object temperature proportionately with distance. is thera any chance to calibrate the sensor output with lens? www.probots.co.in/lens-for-infrared-temperature-sensor-mlx90614.html

You are welcome.

Hi, this is digital and we can’t read it like that.

The demonstration is shown and you have to come to conclusion. also I have mentioned the accuracy in demonstration and by showing the datasheet.

@@robojax 0.5°C error , emissivity of polished aluminium (at 100°C ) is 0.095 you will get error more than 10°C here. If I have to see data sheet every time then what is use of this coding and sensor.

It has field of view (FOV) of 90°. so you have to keep is very close 10mm. Here is precise and long rage with 5° FOV kzfaq.info/get/bejne/oLRoabOEpq6xkqs.html

Wiring problem

I have checked wiring numerous times and i just connected one sensor so wiring is not complex to miss errors. I am still getting this error.

this needs library and lots of work, perhaps week or 10 days. very costly. unless it is a paid project, I don't think worth it. but you are doing a commercial or school project, look at documentation and this library, it would be very easy.

@@robojax thanks ,working for commercial project . Suggest some guiding examples or documents which are helpful Thanks

Hi, please watch the latest video kzfaq.info/get/bejne/oLRoabOEpq6xkqs.html

Hello, you need to create object like the one shown in this video kzfaq.info/get/bejne/gpyVns9jpqjHpY0.html just apply the same principle

Hello, in this line Adafruit_MLX90614 mlx = Adafruit_MLX90614(); change it to Adafruit_MLX90614 mlx1 = Adafruit_MLX90614(0x5A); and for the 2nd sensor use Adafruit_MLX90614 mlx2 = Adafruit_MLX90614(0x5B); now in the code every where you saw mlx, change them to mlx1 and mlx 2 see this example and learn from it kzfaq.info/get/bejne/gpyVns9jpqjHpY0.html

Hi, I have included the link to the latest video in the description. please see it here kzfaq.info/get/bejne/oLRoabOEpq6xkqs.html and you will get your answer.

Hi, have you watched the video? fully? I have explained in side the code how do something with temperature as it is equal, lower or higher than desired value. From this video you will learn how to turn on a buzzer kzfaq.info/get/bejne/apyKYJl-u96vnpc.html and from this video you will learn how to turn ON/OFF a relay which then you can turn ON or OFF any AC or DC load like motor, fan, speaker whatever you want. Good luck.

It means wiring has problem. Check it and please reply

@@robojax sometimes when i push the wires to the sensor a little i get readings or the readings/program stops completely.

Yea so they is wiring problem may be pcb has problem or loosen pin . Check it under magnifier

I have got the RDA5807/ Si4730 FM receiver for over 2 years and hesitant to make a video because I believe very few people will watch it or need it. It is due to mu personal interest. I will make video if time permits. But AM has very few listeners and Short wave should be dead because you can't even get the receiver for it.

You should have searched my channel and not waited. But here is one and you can search for others as well kzfaq.info/get/bejne/i9OJnKuFtOCRZZ8.html

Hi, watch the better version of this kzfaq.info/get/bejne/oLRoabOEpq6xkqs.html

Hi, it says "forbids converting a string constant to char" so it means you have modified the code and done something. Please do not change it and it will read. You may watch the updated video and other related videos here kzfaq.infosearch?query=MLX90614

@@robojax hello sir i just paste your code i did not change anything

I have already put the in the first comment that you have to watch this new video kzfaq.info/get/bejne/oLRoabOEpq6xkqs.html

I believe I explained it two or three times in the video. You must have skipped the video.

Assalamu alaikum Mahmoud, here I wrote code for you but I have not tested it. you have to watch the video fully to learn how the old code works and learn. then you have to study the code below and find the pattern for 3 sensors. once you learned, you can make it for as many sensor as you like. robojax.com/learn/arduino/?vid=robojax_MLX90614_multiple Please read the article. I've provided enough information so you can keep going. good luck and stay safe I am sorry I can't help further as I don't have the time spare on this.

Puede contactar al fabricante del sensor para obtener el sensor www.melexis.com/en/product/MLX90614/Digital-Plug-Play-Infrared-Thermometer-TO-Can Puede encontrar el distribuidor del producto en esta página. diswww.melexis.com/en/contact/distributors Para cada producto proporciono todos los detalles y documentación donde pongo el código.

No. All objects emit infrared energy, known as a heat signature. An infrared sensor detects and measures the infrared energy of objects. learn more here www.fluke.com/en-ca/learn/best-practices/measurement-basics/thermography/how-infrared-cameras-work

Robojax I know all objects emit infrared energy. But I want to know if all of the non-contact thermometers emit one wavelength of red light or infrared. I know that ihealth thermometer does and that the ones that have a red light standard diode do. But I’m wondering about the ones that only have one hole on the face and no light beam.

no this will not emit anything.

Hi, on page 22 of datasheet www.sparkfun.com/datasheets/Sensors/Temperature/MLX90614_rev001.pdf it says it has been fully calibrated at factory. But for your own application you make implement certain parameters and calibrate it.

Saya sedang mengerjakan versi jangka panjang ini. video akan segera hadir.

@@robojax kapan tayang videonya?

You can connect 128 devices in parallel

@@robojax Hi, thank you for your reaction, I've already attached an (I2C) 14x2 LCD Screen to pin A4 and A5. Can I now just add the MLX90614 also on these pins? I assumed that this wouldn't work because the Arduino wouldn't know if it should write the LCD or read the MLX. But so I don't need extra hardware to make this work? Thanks in advance, I'll test it tomorrow. kind regards, Joost

Did you understand the meaning of parallel? If not google it or Bing it please because I have answered your question already

Yes I just didn't know how it would work, but now I found that the SCL and SDA pins are using adresses it does. Thanks for your help

I believe I've shown you in the video. it depends how you use it. Watch the video fully without skipping.

@@robojax I did watched the whole video but what i am trying to know is that can you use it for human temp like when you applied your hand it was about 86-87 degree F . Now that's not even the normal body temp of human so do you consider it to be an accuracte temp measurement unit for human measurement

Hi, please post your question under the relevant video and I will replay. this way people learn. this video is on infrared thermometer. Don't worry all comments from all videos are shown on single page and I never miss them.

Ok dear, thank u And sorry for this

no problem. I just tried to inform you. 😊 .

it means you did not watch the video fully and skipped. You even did not watch the first 45 second of the video.

@@robojax it gave me the correct value for 2 minutes and no it is not giving any value in serial moniter. sir what to do with this now

Hi, have you watched the video? I have even shown the store and the prices.

www.adafruit.com/product/1747

it seems you have bad wiring. Try using I2C scanner (just get the code ) robojax.com/learn/arduino/?vid=robojax-I2C-scanner and see if get the I2C address.

I did search for you and if you can configure the library github.com/adafruit/Adafruit-MLX90614-Library/blob/master/Adafruit_MLX90614.h line 25 sets the address. . you should know the meaning of object.

@@robojax thank you sir, I'll try

you are welcome.

I have shown the page in the video.

Thanks

Sir I am making a robot that record and send information to database of patients in hospital

I want to make for people can you please help me

you want something that is full year of research and work. Start from scratch or use ESP32 module instead of Arduino UNO, it has WiFi and you can do it very easily.

@@robojax sir I am making it using blynk app and nodemcu but in blynk app how I can save data

If you skip the video that is what happens. I have explained all pins at the beginning. Then I just mention to connect which wire to where.

Here is the video which is part of the Arduino course with wiring diagram kzfaq.info/get/bejne/a5pog695zMDPn4U.html

@@robojax ok thank you i will look into it

@@robojax thank you