MAX6675 K-Thermocouple 3 Example with relay and display with code

[@tedsykora1858]

thanks for your help getting me up and running with my max6675 and a K type sensor. I will be using in a real world retrofit/repair soon.

[@robojax]

You are welcome.

[@hexure9663]

Love your channel! It's full of parts of useful things that can be used to make cool stuff

[@robojax]

Thank you. I appreciate your comments and your 👍

[@adamelkoumy5141]

Thank you Jax for all your videos. I hope to see more .

[@robojax]

You are welcome. God willing, I got projects on my list to do. So keep watching.

[@jmtholmbo]

just what i was looking for

[@robojax]

good to hear that.

[@usmanumer9871]

slam . today i did learn something new. thanks

[@robojax]

Glad to hear that

[@blueskyredkite]

Thank you. This is very useful for me.

[@robojax]

You are welcome.

[@kmalnasef1512]

very good you make it easy to understand. thank you

[@robojax]

you are welcome. I am glad you learned something. Salam

[@freddycasilimas7130]

excellent channel I like the explanation that they always give thanks for teaching

[@robojax]

Thanks for watching!

[@theonlymudgel]

Excellent video. Just what I need to help with building my “toaster” reflow oven.

[@robojax]

Thank you and good luck.

[@عبداللهالحمدلله-ي7ف]

very good job, thanks

[@robojax]

You are welcome.

[@AbhishekKr1902]

Excellent tutorial!

[@robojax]

Thank you. 👍

[@chamimsttw2290]

@Robojax, can the max7765 be added with an optocoupler?

[@robojax]

depends on how many input/output you need, get optocoupler with the same number of in/out.

[@secaimi]

awesome! thanks bro

[@robojax]

You are welcome.

[@raticalinc_restore_garage]

Awesome work! Your tutorials really help. Do you have any tutorials using TM1637 with vacuum sensors as well as pressure sensors?

[@robojax]

Hi, I have not come across vacuum sensor yet.

[@linksmith1057]

Very nice, thank you. Any way to change the setpoint temp?

[@robojax]

What is set point?

[@jetski9659]

Very good! Is there a way to stop the flickering and not have a delay in reading the sensor? Thank you!

[@robojax]

You are welcome. Yes. Play with number. The temperature sensor needs some time to read but yes you can change it.

[@Dr.MDShouquatHossain]

Nice video. Thanks for sharing. Its really helpful. I have one request, can you make an another tutorial with your last tutorial (MAX6675 Thermocouple k type sensor with LCD1602 I2C and Arduino), using a maximum and minimum temperature difference controlled by using a keypad and an output can control a relay?

[@robojax]

this projects requires LCD, Keypad and MAX6675 and Relay. needs some work and if it was popular, I would make it.

[@sermadreda399]

very good video,thank you for sharing , max6675 with lcd/relay and setting fixed temp. would be most complete

[@robojax]

you are welcome.

[@Kntryhart]

Excellent presentation! Could you do the same thing only modulate the output to provide a variable speed fan? Thanks!

[@robojax]

Sorry didn't understand what you want to achieve. do you want increase the speed of fan to be controlled directly with increase of temperature?

[@Kntryhart]

This is for a heating unit. When the device is first started it will be at ambient temperature and the fan output would be 100%. As the temperature approaches 400 degrees F, the fan output needs to decrease. When the temperature reaches 450 degrees F, the fan needs to stop. When the temperature drops to 400 degrees, the fan would need to restart. The start/stop cycles would repeat based on the temperature measured at the thermocouple. I hope I could change the selected temperature values. I really appreciate you getting back to me!

[@robojax]

Then you need to have DC fan (DC motor) with speed controller. so use DC motor controller with potentiometer and you can use temperature instead of potentiometer to control it.

[@davidfade7538]

Can you make this project again but with change componen oled 0,96 and dht11 sensor. I need the code from my project

[@robojax]

Hi, then you need to watch the MAX6675 with k-type without display. here is my video on OLED. You can use kzbin.info/www/bejne/i568mnuKhN9ga80 you can combine both very easily.

[@Presso99]

Hi, can we connect 2 thermocouple with Arduino and read the data simultaneously?

[@robojax]

Hi, just search for MAX6675 in my channel. learn how to Search for a Particular video in a channel here kzbin.info/www/bejne/hZnOhpabd7yWftU

[@Presso99]

@@robojax Thank you sir, I found the KZbin: kzbin.info/www/bejne/ipyugYh-gqt3n6s

[@iealfian9658]

Hi, if use termocouple + max6675 out put max6675 can activate ssr relay?

[@robojax]

No. The output from the module will always have signal which is digital values and we use Microcontroller like Arduino to read and decode it and take action based some values.

[@zzetterberg]

If a what to use it whit a ac dimmer?

[@robojax]

Your question is not clear. Which part of this project?

[@zzetterberg]

@@robojax If I want to control a heating element with an ac dimmer and use max6675 or ds18b20 to keep the temp at a certain degree as a PID.

[@phild_up]

What a great video!! I purchased all the components to control a nichrome wire. I have a question though. 5 Seconds ON, 7 Seconds OFF On initial warm up, the nichrome wire in on too long until the temperature gets to 80 degrees C. It get's too hot. I need more of a gradual heating. Can you help in editing the code so that when the temperature is under 80 degrees, the relay will turn into the ON position for 5 seconds, then it shuts OFF for 7 seconds. It repeats this loop until the temperature reaches 80 degrees C. When above 80, the relay stays OFF. Then when the temperature goes below 80, it repeats the 5 seconds ON and 7 seconds OFF. The only thing is that I'd like for the temperature to still take a reading every second like your code does right now. Thank you, I look forward to learning more from your channel. Phil

[@robojax]

Here is the solution for the problem you described. codeshare.io/5Q7VYm you did not mentioned which code you used as I have different code for this video, but you can use it anywhere or modify it.

[@phild_up]

Thank you, that's exactly what I needed!

[@robojax]

you are welcome.

[@puriap250]

Does that bulky thing at the end of the probe come off? I need a thin probe for my application but it appears that this bulky screw thing is attached to the probe for some reason.

[@robojax]

No unfortunately it doesn't. It is made for oven or other application .

[@puriap250]

thanks

[@feliperuizjuarez5636]

bien desde mexico

[@robojax]

Gracias de Canadá

[@eloypinto9637]

Great tutorial, I'm learning a lot with your videos. In this I have a doubt The flicker of the display can be canceled?, the display placed on a dashboard of a car is not comfortable to drive with that flicker Thanks from Spain in advance

[@robojax]

I have explained it in the video. the flicker is from the delay in the loop. In my code it is 1000ms, change it lower value.

[@eloypinto9637]

@@robojax I'm sorry I did not see it well. Is already working perfectly, thank you very much !!

[@robojax]

you are welcome.

[@conradocamilon5587]

hi im going to display the temperature in seven segment! and i need it to insert button for setting the temperature can you help me

[@robojax]

Hi, what you want is not simple. it needs some work. If you want to hire me, I will be available in after Feb 25. Contact me via robojax.com contact page. Provide your email there.

[@antomichaelsurajt1564]

What are all the components we need to buy

[@robojax]

they are all shown, one by one explained. Please watch.

[@joshhagen4182]

Great tutorial thanks for providing code i hope to use this on my mega with an lcd shield using 3 buttons to select and set the temp up and down. Any advice? Its for a heater setup

[@robojax]

I have not tested it in this combinations but it should work.

[@yprastyo33]

great tutorial...!!! can we put 2 MAX6675 and 1 more TM1637 ? they reading together for different locations, thanks..

[@robojax]

Thank you. Interesting questions. I haven't done it but doable. If I got a chance, I will look into it.

[@RaitoNg]

Hi. May I know how to change the code accordingly if I wish to connect two of this thermocouple simultaneously in one Arduino board? Eg. One connected to digital I/O port 234 for one, another one connected to port 567.

[@robojax]

Hi, I just updated the code in the page. The last code is for 2 thermocouple robojax.com/learn/arduino/?vid=robojax-max6675-thermo Let me know if you got any issue. I have not tested it but it should work.

[@RaitoNg]

Thanks a lot man!! Although I just figured it out only after hours of trial and error lol.

[@mohammedfadhel1718]

Hi,I need some help in my project ,I have 12 v dc heater similar to 3d printer heater and i need temperature controller ,I try PID and K thermostat but all this is need AC power and my project is just DC .appreciate any help.thanks

[@robojax]

Hi, I believe this video will help you kzbin.info/www/bejne/mofLaGqtiZJnd9E

[@rahulprakash2933]

As all devices are based on 5V supply, do this network work if I use AC 150W heater instead of AC fan?

[@rahulprakash2933]

one more thing- how to connect relay and display both in same setup.

[@robojax]

Relay is isolating your circuit from AC. So you need AC to DC converter of 5V to power up Arduino and then using Relay you can control the AC load. You can use this module to convert AC to DC kzbin.info/www/bejne/Y3unZHhtmpWFd6c

[@rahulprakash2933]

@@robojax Can this AC-DC converter handle 150W?

[@robojax]

No it is not. it is only 5W as stated in the title.

[@rahulprakash2933]

@@robojax How to control 150W heater?

[@adexjapan6590]

for temperature and time setting parameters using the button

[@drewh7855]

Hello Great Channel! Is there anyway to display temperature with 1 digit past the decimal point? Like: 83.6 93.4 65.2 102.5 132.6 on the seven segment display. This would be a HUGE Help! Thanks! Also anyway to use 2 temperature sensors and 2 displays? I am using DS18B20 OneWire Sensors but I also use MAX6675 K-type sensor for high temp applications.

[@robojax]

You are welcome. With current library, you can't but I will work on it in the future.

[@RaitoNg]

Hi may I ask again? It works fine when I use Arduino board but when tried to use the code on Wemos D1 board, it appeared that it would fail to upload. I checked some sources saying that because the board uses a different mechanism so most of the libraries would not work on, it may need to have some modifications to be done. Do you know what modification needs to be done? Thanks a lot man!!

[@robojax]

You have to select the right board type and programmers. both of them can be selected from the "Tools" menu. so try different options. I am not sure what board and what USB chip you use.

[@RaitoNg]

It is a WeMos D1 ESP8266 WiFi Board with a mirco usb chip. Because I have setup so that it can successfully upload the example sketch of ESP8266 to the board. But when I tried to include the library the error starts to happen. (exit status 1. Error compiling for WeMos D1 R2 & mini.)

[@robojax]

is your question related this video? If so please test this code separately making sure it works without any issue then add something else. I will have separate video for Wifi module in a few months.

[@RaitoNg]

Thanks anyway man! I am currently doing Final Year Project that requires the thermocouples to send signal to my user interface through IoT (Internet). It will be great if could see your video as soon as possible !

[@RusNovgorod]

Наверное будет сложно понять меня на русском) не подскажите как можно произвести подобное подключение с возможностью регулировать срабатывание реле через внешний скажем переменный резистор или с помощью энкодера. То есть что бы не переписывать каждый раз код, а можно было выставить температуру в любой момент.

[@yoviesigit5292]

Sir this sensor can hold hot water more than 100 degree ?

[@robojax]

Yes. this can go 500 or 600 ° C

[@yoviesigit5292]

Thanks sir. I have some boiler project control with PID control Algorithm. I just looking sensor that can hold hot water more than 100 degree. I really thanks for make this tutorial. Keep inspire sir.

[@sonoflocksmith]

If you write the display codes on the setup loop, The display does not blink in every second.

[@christinesonya5993]

Can you make a timer in that code?

[@robojax]

yes you can. I have timer videos where you can use the code from kzbin.infosearch?query=timer

[@christinesonya5993]

@@robojax and also, do you have some code that it can be connected with esp8266?

[@robojax]

I will make video on that God willing.

[@christinesonya5993]

@@robojax ok, i'll wait it! Thank you

[@adexjapan6590]

I want to make an Arduino project, the project I want is as follows setting using the button to a temperature of 150 ° C after the temperature reaches what you want to set a few minutes die. can you help sketch? because I'm still studying at Arduino

[@robojax]

your request is simple and you can use this code. But with push button, it needs a separate project and needs a little work. robojax.com/learn/arduino/?vid=robojax_MAX6675_thermocouple

[@anikimran3403]

Can you please give me the code for 2 thermocouple probe with relay and display. Thank you

[@robojax]

The link to the code is under the description bellow the video snag.gy/9cOUC5.jpg

[@anikimran3403]

Here you use one max6675,if I want to use two max6675 and fix the temperature with the relay,then what will be the code?

[@tankalvin1444]

Mine seems to get crazy values like 500, 1000 sometimes. And it does not seem accurate I can't meausre something cold or even my body temp

[@mdimranbinalam2130]

Can you please give me the code for 8 thermocouple probe?

[@robojax]

The link to the code is under the description bellow the video snag.gy/9cOUC5.jpg

[@mohamedhatem4160]

hi how can use 7 thermocuple at the same time with arduino and display it's reading at serial

[@robojax]

Hi, here is the video showing how to use 2 of the thermocouple bit.ly/max6675-lcd1602-2dis

[@feliperuizjuarez5636]

sera posible cargar el mismo codigo en una placa STM32F103 saludos

[@robojax]

Hola, sí, es posible, pero debes incluir controladores para esta placa para Arduino desde esta dirección. github.com/rogerclarkmelbourne/Arduino_STM32 No he trabajado en eso, pero debería funcionar. Gracias. Ahmad de Canadá

[@feliperuizjuarez5636]

@@robojax si ya le cargue los controladores y le e cargado varios programas desde IDE de arduino como el RFID pero el max6675 marca error en archivo cpp. y lo resolveré trde o temprano en saludo desde queretaro mx.

[@omoivo6525]

Hallo I have one Problem! Serial Show F=nan! No Data. Pleas help. Thanks

[@robojax]

Are you trying this: Serial.print("F = "); Serial.println(thermocouple.readFahrenheit()); It seem the pint connections of Clock and the data is not write. Check the wires.

[@omoivo6525]

Robojax Yes but no successes!

[@taattataattataattata]

I’m trying to find a item that does this all integrated no Adruino . If anyone knows of anything like this let me know. I need it to use k type

[@robojax]

you need processing power which Arduino offer. you may find something on eBay or AliExpress.

[@informativeworld801]

project code and library link is not working 😥😥😥

[@robojax]

Not working is not enough. Please provide error

[@saipulhikary6282]

TM1637 error,,i don't know file.please help me.

[@robojax]

I have explained that you should not start all of them together. 1-First just get the code I have provided to use MAX6675 make sure you can see the temperature on serial monitor 2-Then test TM1637 make sure it displays any value you want 4-Then combine both MAT6675 and TM1637 and for sure it will work. If you don't follow this, you won't be able to know where the problem is.

[@saipulhikary6282]

where can I find the code tm1637 from this video?

[@saipulhikary6282]

File code TM1637?🙏 I am sorry,i am a notive...

[@robojax]

in computer (not in mobile phone) snag.gy/EG4O2l.jpg

[@saipulhikary6282]

I have downloaded both(Max6675 and Test TM1637),.then how to combine both on Arduino? Thanks,.🙏

[@DandSCreations]

my board is reading 0 degrees Celsius at all times!

[@robojax]

is zero on the display or on serial monitor? Try to run the code without relay and display.: goo.gl/Ly5r9o and let me know

[@DandSCreations]

Thank you for the fast reply, apparently my MAX6675 off ebay had a different pin out and I had to change the wire order. The temperature now displays properly on the serial monitor, unless oddly enough. Im holding the thermocouple, then the temperature will stay, even if red hot, unless I put the thermocouple down.

[@robojax]

Then the display has issue. Please try the display alone. Watch this video and get the code kzbin.info/www/bejne/eqbEnp2iqNmCga8 Once it worked, then try it with the thermocouple

[@DandSCreations]

it was staying on the serial monitor as well! I found a different code for the thermocouple that didn't use any library at all, and then wrote my own LCD code and its finally working. Thanks for the replies, now on to the tachometer! I'm making a FADEC for a home built turbojet from a holset HX60 Turbo.

[@robojax]

You are welcome. I am glad you were able to resolve the issue.

[@karsanhusni1484]

I'm sorry. My name is Karsan, Do you have this program like this with Raspberry Pi Sir? If you have it, can you upload or share to me? if you dont have, maybe tou can make for me this program with Raspberry. Thank you so much sir

[@robojax]

Hi Karsan, nice to meet you. I am sorry I have not written any code for Raspberry PI.

[@karsanhusni1484]

@@robojax oh only written code for arduino sir? Is not for raspberry?

[@robojax]

I mentioned in the video where to get the code. Also this is accepted by everyone that related links will be under the video in the description.

[@karsanhusni1484]

@@robojax ok sir, maybe you can try to make like it with raspberry so can help and useful for everyone :)

[@tankalvin1444]

why is the response time of this so slow

[@robojax]

You can try it faster and see at what delay you can get result. The temperature prob makes it slow.