How to use LCD LCD1602 with I2C module for Arduino - Robojax
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- เผยแพร่เมื่อ 3 พ.ค. 2024
- In this video you will learn How to use LCD1602 with I2C module for Arduino
You will see cursor blinking, cursor not blinking and also you will see how to display special characters on the screen.
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Download the code for LCD1602 with I2C : robojax.com/L/?id=85
Chapters of this video:
00:00 Start
00:35 LCD1602 and I2C Module explained
04:37 Wiring Explained
05:35 Downloading LCD1602-I2C library
07:13 Code explained for LCD1602
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#robojax #robojaxLCD1602 - วิทยาศาสตร์และเทคโนโลยี
Three thumbs up for pointing out the address values for A0 A1 and A2! I couldn't get my LCD working until I saw that I was using the wrong address from the tutorial example. Cheers!!
Excellent tutorial. No BS, and the right amount of technical detail. And no music! Subscribed.
Awesome, thank you!
I was searching different tutorials to ascertain what code was being used to define pin placement and couldn't find anything with a credible explanation until I found your video.
Thank you again for being a great teacher.
Jizak Allah.
I am glad you fund it useful. Shukan. Wa Eyakum.
Thanks for pointing out the trim pot for the back display. I was about to send two displays back because I thought they were faulty, they were only turned down so nothing could be seen. Also the address map might come in handy too, thanks for sharing.
You are welcome. I am glad you resolved the issue.
This explanation on LCDs with Aduino is the best I have come across.
I love this channel so much. Thank you, Robojax
TYSM Sir
Code explained very well
The best part is you also commented each statement
May GBU 💖😘✌
You are welcome. May GBU too.
thank you i am an arduino beginner and your videos always help me
Thanks for a great video! Very clear explanations and pleasantly helpful!
Hello Robojax :)… I have just watched your tutorial and found it very informative. Thank you very much, John 👍😊
Hell John, you are welcome. I am pleased you found it useful.
Hello John I found your tutorial very informative. I am doing a project for level controller.
I am doing a project on level controller. I have written the coding. The problem arises when the pump comes on or goes off. There is jumbled worlds. Should I send the coding to you?
Well Done! Comprehensive tutorial on how to use this inexpensive device.
Thank you. Good to hear that.
This was so helpful for my project, thank you!
honestly i watch a lot tutorial this is one of the best ! keep it up bro !
Thanks, will do!
Well done!
Everything is clear and easy to recreate.
Thank you.
Thanks...Just what I needed to for 1602 LCD I2C Display module.
You are welcome.
Outstanding explanation 👌
Your videos must surely be of the best on the net👍
Great video! Followed along and it worked perfectly. Thanks!
You are welcome. Good to hear that.
Changing the address just by soldering... For this technique i searched a lot before seeing ur vedio....ur vedio helped me a lot ....tq
You are welcome. Good to know. Please share and subscribe.
Thank you for the lcd library
Thanks, been around, finally got it working
You are welcome. I am glad you did.
@@robojax hey my lcd is just lighting up but no text :(
@@fps3689 Same here
Great explanation. Thanks for your lesson. One question...can you control the backlight and/ or contrast of the I2C LCD using just the code?
One absolute essential when soldering is to KEEP YOUR SOLDERING IRON TIP CLEAN TO ENABLE EFFECTIVE HEAT TRANSFER!!!
It helps a lot.. You are so Great my friend :)
I am glad it did. Thank you
Thank you very much for this tutorial.
You are welcome. If you watched with other than English subtitle, please let me know. Thanks
Thank you a lot for your excellent video. You helped me to resolve a problem in a project I'm actually working. ( An emulator of an hydronic heating system ) Thanks again, I'm from Montreal. Miguel
My pleasure. You may continue learning Arduino with my course . Link is in description
I did just that but I had problems with error code. I coppied and pasted your sketch and still error message. Iused library manager and found a library LiquidCrystalI12C and it now works. You have a different IDE version than mine also. Love your video's thou. Keep it up.
I always watch here. I just want to clarify how can easily code using lcd i2c in a different sensors thank you btw you have always nice content🥰
I have used this display on may be over 50 or more sensors. just search my channel.
thank you! worked perfectly
You are welcome.
Thank you so much!!!!👍
Robojax, you are the best!
So you are. thanks. There is the better video with wiring diagram th-cam.com/video/pxUjEsJQW2M/w-d-xo.html which is part of my Arduino course
Hello Sir, firstly thank you for the great video. Secondly, I would like to know that if it is possible to use RTC3231 which uses I2C, and the LCD1602 that uses the I2C too along with a keypad. For example, if I press a key on the keypad I would like to see it on the LCD. Will the two devices on the I2C bus make a problem?
Just search my channel and you will be surprised. Here is the code and video th-cam.com/video/qB0drI56zGE/w-d-xo.html
@@robojax Thank you very much, sir. I follow your channel regularly for the amazing stuff you have made. Actually, I have integrated the RTC and Keypad but now I want to integrate the I2C display. I wanted to know that will it possible to see the pressed key on the keypad on the display without any problem with the display or RTC? But you have discussed the address on the I2C bus. Do I need to specify the address of the LCD when I need to communicate with the display?
Well done RJ, I'm expecting soon in the mail a 20x4 LCD, just wondering if you will intend upload another wiring, instructions, and code links abut that popular LCD sometime soon? Regards
there is 20X4 and I will upload the video in coming days. But have not heard 20x5.
Oops ;) you have right, I mistyped the actual size is 20x4 exactly what you say is correct. Regards and thanks very much.
thanks man
omg i finally found it
man thanks
Glad I could help
@@robojax can you subscribe to this channel = th-cam.com/channels/-z6vzILUoG3FVtW5mWl1ww.html
Thanks ......... it really helped
Very nice tutorial ! Thanks
You are welcome!
thank you sir great explanation sir from srilanka
Ur channel is awesome.
Thank you.
we are original manufactory for LCD display, if you need 1602A pls let me know. mail to maoshengelectronics@gmail.com
සුපිරි මචන්, ගොඩක් උදව් උනා මෙ ව්ඩියෝ එක
ස්තුතියි
ඔබව සාදරයෙන් පිලිගන්නවා. ඔබ එය ප්රයෝජනවත් යැයි සිතීම ගැන මම සතුටු වෙමි.
Your explanation is very good. Did you have project Arduino control pressure in compressor with wiring and Arduino code explanation. Please give the link. Your videos are very helpful. You should have long life.
Questions:
1. how to customize the Pins for connecting SDA and SCL in the Arduino? I would like to use A5 and A4 for another purpose.
2. Will this library works for a 20x4 LCD display??
Thanks!
1-See this video which I have explained the I2C address: th-cam.com/video/bqMMIbmYJS0/w-d-xo.html
2-Yes I works. I have another video for LCD2004 display: th-cam.com/video/DKmNSCMPDjE/w-d-xo.html
Should we female header pin to solder??
Hello. Thanks for the video. I used it on 8/28/22 and I had to make one small change, maybe the L C library has been updated and changed a bit. My Arduino IDE wouldn't accept "lcd.begin():" so I had to change it to "lcd.init();" Otherwise it works great. This is my first time trying to use an LCD.
I don't know if your interested in this but I found the "lcd.init();" in the Liquid Crystal I2C example "Serial Display".
you have not installed the correct library. I made another tutorial with the same library here th-cam.com/video/NXAswOc_2zg/w-d-xo.html and used lcd.begin() and it works fine. you are using wrong library.
If u use the SDA and SCL pins instead (I have to since I'm also using something that takes the pins u used) do you have to change the code? Is there a line I missed where you declare which pins transfer clock and data?
NO. That is what you should use. A4 and A5 are the same pins.
Thanks very much !!
You are very welcome.
Very nice Tutorials
Glad you like them!
thanks bro it helped a lot
you are welcome. Few weeks back I published my Arduino course worth $200 on Udemy. Arduino Step by Step Course (over 100 lectures) Starts here robojax.com/L/?id=338
Thank you
Good Tutorial, Well explained :):):)
Glad you liked it!
Can we do this without soldering
Yes if you can hold the module with your hand pressed on the display
Possible to explain the analog part? what if I wan other analog pin, rather than analog A05 / A04?
SDA and SCL are used for I2C communications and ONLY those pings are using or just use the pins on other side of the board labeled as SDA and SCL. See this video which is part of my Arduino course that might help which has wiring diagram. th-cam.com/video/pxUjEsJQW2M/w-d-xo.html the full course is Here is $200 Arduino course for free Arduino Step by Step Course (over 100 video lectures) Starts here robojax.com/L/?id=338
Thank You Ayak
Ayak?
Thank u sir
You are welcome.
did we need to solder at A0,A1 and A2 if we use address 0x27 ?
Please see the link in the description for separate video which I2C module is fully explained
3:37 A0 A1 A2... good but what are they used for? :)
Your questions seems very baisc . You need to take a course. Please watch this video th-cam.com/video/X8OJjMIHCrw/w-d-xo.htmlsi=p0SVWoynWuSD16t2 this video is Larry of 30 lessons cours
thanks you
The solution for the blue LCD problem is the potentiometer guys. That is the blue box behind your LCD. Screw the grey thing on it tighter and voila.. your there..
I solved my issue. It was the address. I was able to find the correct address using the scanner code. 0x3F is my address. I think this is what most people are experiencing, as the method in video is misleading about the addressing.
Thanks Nick. That was all it took to display the characters.
thanks , i was about to smash the thing on the floor
Thanks 😊
thx🙂
Can I connect "VCC" to the +/positive side of a 5V battery, and the GND to the -/negative side of the same battery? (I am going to connect some equipment to my Uno, and I've heard it is easy to burn the card if you try to take too much power from it)
Yes you can if your battery is 5V. We don't have 5V battery as for as I know unless there is something else that regulates it to 5V.
Robojax I was thinking about getting a 5v battery eliminator / power supply, instead of a battery. Not sure if it will work
Why didn't you use simple LiquidCrystal library? Does the driver change the way of using library or something?
I tried many libraries and this was the best of all without any issue. In every video I made on LCD, I used it.
May i know What is SCL line Frequency here?
The baseline is 100kHz but you can change it. here is the page where you can read further www.arduino.cc/en/Reference/WireSetClock
Thank you very much!
You're welcome!
Very good video. You've helped me! =) Thank you! =)))
You are welcome. Good to hear it helped you.
Hi there, is it possible to use your code with arduino nano? I'm cannot find out how to get your code to work with a nano
Hi, all the codes work with all Arduino board and that's why I did not mention which board.
Hi thank you for great video.
Mine is not working at all. I am using UNO with an OLED display, did everything A4 and 5, dedicated SDA and SCX, different libraries, even followed advice to change to lcd(0x3f, 16, 2), it is all dead and showing nothing. I am using an OLED without a shield but it has the four required connections. Any idea where am I going wrong?
you gott install the library mention and shown. over 100,000 people have used this library
Do you need to use the i2c bored or can you just use the lcd on its own
No you don’t. Get the lcd without the I2C module and use. But you need to connect 8 or 10 wires instead of 4 . Here is my video on that th-cam.com/video/S4ya3Q7uhJs/w-d-xo.html
شكرا لك متابعك من العراق
مرحبًا بكم في Robojax. أحمد من كندا. أصله من خراسان الكبير.
Thanks a lot.
you are welcome. Thank you for not skipping the ads and keep watching them. This will help me a lot.
is it important to solder a0 a1 and a2 pin for 0x27 address
Once you receive it, do not touch it. it will work. unless you want use another address.
If in doubt use the ic2 scanner sketch to find the address of the ic2 device you are using. Also as mentioned in the vid, a lot of the modern revision [r3] boards use SDA & SCL instead of pins A4 & A5. You'll find a lot of the older sketches showing pins connected to A4 & A5.
When I went to upload the code, I got an error on this point "lcd.begin()" .After this change it works great("lcd.begin(16,2)".Thanks for sharing and good luck with your projects.
how??
@@Omsharmaji30 explain what you don’t know how to do 🙄
Thankyou bro it really help me
How could I use this display for home theatre monitor?
Search my channel for thermostat
Please help
I am getting, compilation error: no matching function for call to "Liquid Crystal_I2C::begin()"
Okay I figured it out had to remove the other LCD libraries and restart the IDE
hi i can't find the library so can you give me the link of it please
Hi, 1000s of people have downloaded it. Under the video we have description and I have links there. see this image snipboard.io/EG4O2l.jpg
I found out information, into the datasheet to LCD 1602 is indicated, that backlight consumption is about 100 mA. As I know, DC current per I/O board's pin is 40 mA. So, using this LCD on maximum output current limit is harmful, is not it?
I have not measured the current, but even if 100mA is the max current of the LCD, it will consume it from the VCC pin. The VCC pin of Arduino uno can supply up to 400mA and you can see it here: playground.arduino.cc/Main/ArduinoPinCurrentLimitations the 40mA is the limit of the IN/OUT pins which in this case we do not use to supply power. The other pins are use to communicate which needs very little current.
Can you please advice! I keep having a persistent issue with this part -
lcd.begin();
This text consistently displays an error when trying to upload which states -
'no matching function for call to 'LiquidCrystal_I2C::begin()'
What is the issue? Thanks
Please download and include the library.
change lcd.begin(); to lcd.init();
for those who are still searching I had exactly this error,
>open the Arduino app;
>click in sketch
>add file
then finally add the file here
or search for the "Arduino" folder - Mac
>command + space to search
>type in "Arduino" without the " "
>select the folder
> Drag & drop the downloaded library into here
or search for the "Arduino" folder - PC
>windows + f to search
>type in "Arduino" without the " "
>select the folder
> Drag & drop the downloaded library into here
*** please correct me if I'm wrong and ill edit accordingly
everything will now run as it should (I wish this was included in the tutorial for us noobs)
on a side note here's more info on how to add libraries moving forwards;
www.arduino.cc/en/Guide/Libraries
if anyone is curious the file extension ending in .h is written in the c language and can be read with Xcode or visual studio
you have not installed the correct library. I made another tutorial with the same library here th-cam.com/video/NXAswOc_2zg/w-d-xo.html and used lcd.begin() and it works fine. you are using wrong library.
Make a video on i2c keypad interfacing with arduino please
no seen or found keypad using i2C.
Please search on it on google
Please search on it on google
Hi, I just followed the video to test my i2c with LCD on Arduino Uno. Though the LED lit up,, I could not adjust the contrast with the Variable, and hence nothing was visible in the LCD. can you suggest a remedy?
That’s that only way.
If lcd(0x27, 16, 2) configuration is not working, It is strongly recommended that you try the lcd(0x3f, 16, 2) configuration before giving up.
This solved my issue. I was sure it wouldn't, as it defies logic lol.
thank you
I keep on getting a error message no liquidcrystal .h file exists. What a I doing wrong in down loading you code and folder?
Just watch the video without skipping it will be resolved. Just install the library.
any pullup resistors required? bought 3 LCD with I2C. all three not displaying any text. the program downloaded without any error. brightness adjusted.
did you set I2C address? use I2C scanner I've provided. then change the contrast. it should work. if you want to change I2C address, to something else, check the link in description for my other video.
@@robojax I2C address correct. used scanner. its not able to find any device. It's stuck up like.. scanning......
If it can’t find , then check wiring. SDA is A4, SCL is A5. And if you still can’t get the address, the your module is bad.
@@robojax connection correct. Tried in another Arduino UNO. Now I2C address displays in scan, but still LCD not display letters. Adjusted contrast too. 🤪
Finally done. Deleted all libraries and installed only one fresh. It's working. Cheers..
I need help please. I have connected a MPU9250 accelerometer to the arduino at pin A4 and pin A5 already.
Where can i connect the SCL and SDA of the LCD screen and how do i change the code?
Hi, you are asking questions which have been all answered in the video. Please watch, have patience as for 15 minuets. I am reading this comment after 7 hours. if you had watched the video, you would have had the answer 6 hours and 45 minuets ago.
the shows error, I need help
that is not enough. what error? it shows something. perhaps you have not installed the library. Please watch the better version of this video which is part of the course series with full details and wiring diagram here th-cam.com/video/pxUjEsJQW2M/w-d-xo.html
Hey, I am new in this, I will shop same for Arduino but instruction says the I2C 0*24 is not possible to be changed , what is this and do I need to get another type? I will use the microcontroller with a encoder on a machine. Best
sorry I did not understand the 0*24 in the "I2C 0*24". what are you referign to 0*24?
Can Arduino be used to produce business goods? What is your opinion on this?
Yes of course. There are so many companies offering industrial Arduino product.
Thanks you sir for reply
do we really need to solder it?
if it is not already soldered, yes you need. the connection will not be established.
Just got the Lcd thing to work but I have a doubt. Suppose you want to change the text After re-uploading the code you have to either adjust the potentiometer in the i2c module or turn the Arduino On/Off to make the new text visible. Is there a simple solution to this?
you can have push buttons like 2 3 or 8 push buttons each with different messages. once pushed you can display them. I have a lot of videos on push buttons. Watch them so you learn how push button works. then if you watched this video fully you would know how to display text. With each push button different text will be displayed. if time permits, I will make a video on that.
can i run a program after uploading it with arduino then removing arduino and using i2c instead
This display is used in this video “for Arduino “ you can connect it to other microcontroller to display text if you know how to program it. Here is introduction 30 minutes course th-cam.com/video/Mbb2xa1WcRM/w-d-xo.html
It didn't work for me with a regular LCD shield, but it worked with DFRobot LCD Keypad shield. Not sure why, nothing showed up on the screen
Perhaps you have not installed the right library.
7:48 I put the exact same code on the IDE and arranged the LCD like in the video but nothing happens on the LCD why is that?
I assume you have downloaded the library. then adjust the contrast while the code is running. make sure you see 16 character frames in each line.
@@robojax yes, but how do we adjust the contrast without the potentiometer since like I'm using the LCD I2C
It has to have potentiometer
Hi, Your video is excellent!, But I downloaded library, I intalled, Connect all and LCD did´t work. I checked the Program,Libraries and circuit several times.
The program ran without error, the LEDs on Arduino blicked, and LCD is on, but message had not show. Is very strange.! I saw other video about issue address 0x27 issue.
Are there any way of check pins 4 and 5?, I check with a LED, and it pins have a behaivor of pulse of clock.
I am using Arduino UNO and LCD 1602 Any idea?
Best Regards
Hi, turn the potentiometer. Most of the times it is the contrast that makes the text disappear. Did you run the I2C scanner? it is in the same page as the code. robojax.com/learn/arduino/?vid=robojax-LCD1602-I2C install i2C scanner, get the address and use it if the issue is with the I2C. Most people don't watch the video and kip. I have left nothing. it should work as it did for over 100k people.
when i installed the library it wasnt as yours, i did not get the DHC library. what should i do?
You must get it from the link I provided.
خیلی عالی دستتون درد نکه
سلامت باشید. این هم نسخۀ فارسی خالص اید ویدیو در مجرای "علم وفن" th-cam.com/video/1-ceRuyDkbQ/w-d-xo.html
Hey sir code is getting uploaded and backlight is also glowing but the text r not visible so please help!
now turn the potentiometer left or right until you see squares on the screen. this video is outdated .there is better version withy wiring diagram here th-cam.com/video/pxUjEsJQW2M/w-d-xo.html which is part of the Arduino step by step course
I had subscribed to a bunch of people and I was trying not to subscribe to more people, but I had to subscribe
sir actually i am not able to found the master library i have checked all the links there is liquid crystal and lcd 1602 download links do u can provide me the master library link
It has been foliage over 100,000 times . Look at the link in the description
Hi Robojax, thanks for the video but i still can't get my lcd to work.
I soldered the I2C backpack on the 16x2 lcd, connected the pins right, checked the adress with the I2C scanner (result was 0x27), installed the right library, tried every angle of the potentiometer of the backpack, closed and opened arduino, resetted the UNO, reinstalled the library,
summarized: I tried everything but the only thing my LCD gives is a very bright blue screen with no boxes, lines or anything on it. Just blue light. What could it be? I am trying this for days now.
Hope you can help me. Thanks in advance.
Never mind. Took my time soldering it again and it worked. Probably didn't solder it right the fist time.
good luck with your project.
eenvoudig
Super goed. Bedankt
Hello, I did everything as instructed in the video. However, my LCD lights up but doesn't show any text. It's totally blank. what can be the reason for that?
Adjust the potentiometer until you see the text
@@robojax I had the same problem with her and when I adjusted th pot, only boxes shows
@@robojax pls help
hello,am using this lcd in my project on an alarm clock,i have difficulties in the code settings and arduino setting.kindly help me out brother.am new in arduino projects.
Hello, if you are new, then you need to start learning. Here is my $200 Arduino course for free th-cam.com/video/-6qSrDUA5a8/w-d-xo.html and in this course we have a full section on LCD display. Good luck
My LCD won't display anything, the back-light LED is on, but I can't see any text on the screen. I checked the soldering and I didn't spot any problems with that process, and my code is also correct. Do you know what might be the problem? Thanks.
Adjust using potentiometer. I have shown in video.
@@robojax I tried, but that's not the problem