ILI9341 TFT LCD to ESP32 - Full HOW TO for display, SD card and Touch. Using TFT_eSPI driver

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XTronical

XTronical

4 роки тому

IMPORTANT: There is an omission in the video, for the touch screen to work you must un-comment the line below (remove the hash at the beginning) in the "User_Setup.h" file.
#define TOUCH_CS 21 // Chip select pin (T_CS) of touch screen
How to wire up and use a ILI9341 TFT LCD Display with an ESP32, uses the TFT_eSPI library. Covers all aspects - The display, SD card and touch screen with examples for all. Apologies for the varying sound levels. Video was shot over about 10 days and I must have positioned the Mic differently on some occasions and for some shots I used a different mic.
Affiliate links for the items shown: Clicking these costs you the same price but gives me a small commission, please consider supporting this channel by using them :)
ILI9341 TFT Display : amzn.to/2PWDcVG
ESP32 : amzn.to/3cTaH1i
8GB SD Card : amzn.to/3aIdF7g
Dev Boards : amzn.to/2KFHCue
Project Page : www.xtronical.com/esp32ili9341
For other projects and ideas see :
Web : www.xtronical.com
Link to the TFT_eSPI GitHub page : github.com/Bodmer/TFT_eSPI/
If you'd like to support me via Patreon then the link is below and that would be just amazing. Patreons have access to all videos early plus can view all the posts on Patreon. There are other rewards if you're interested. If you just want to watch videos then that's also fantastic because without people viewing I wouldn't even do half of what I do. So thanks very much :)
Patreon at : / xtronical
I also do Kofi (Coffee) if you want to tip me for a brew! : ko-fi.com/xtronical
Intro/Outro Music by Creo Music : www.creo-music.com
"Bamboo Swing, B8.wav" by InspectorJ (www.jshaw.co.uk) of Freesound.org

КОМЕНТАРІ: 401
@queenidog1
@queenidog1 3 роки тому
This is a great video! Informative, slow enough to follow, quick enough to keep me awake! I DETEST videos that don't have commentary. This guy does it very well, he is very clear. Saving this video!
@philipschoeman2434
@philipschoeman2434 9 місяців тому
I struggled getting my screen to work, and did not know that SPI is a share bus. Thanks! You saved me allot of time, you got my like.
@haljones8028
@haljones8028 3 роки тому
Great demo and clear explanation. Ordered my screen today - thanks for taking the time to put this together!
@XTronical
@XTronical 3 роки тому
Fantastic, thanks for the feedback. Glad it helped
@tkpnp
@tkpnp 3 роки тому
Thanks so much. I have used tft_espi many times but haven't used it lately. I drew a complete blank...until I found your video! Great Job.
@XTronical
@XTronical 3 роки тому
Thank you for the positive comments
@fireheartedtimemanagemente5678
@fireheartedtimemanagemente5678 Рік тому
I used this video to better understand the wiring of the display and how to use TFT _eESP library to get my touchscreen working with my Wemos D5 mini and it finally works, thanks a lot!
@clemensgruber6213
@clemensgruber6213 3 роки тому
One of the best ILI9341 tutorials with TFT_eSPI and touch functionality! Many thanks!!
@XTronical
@XTronical 3 роки тому
Thank you
@RTOHIO
@RTOHIO 3 роки тому
ThaTFT SPI ILI9341 Display working and after fixing the omission inn the setup file for touch_CS, touch screen with buttons is working. Such a thrill to finally get access to all the examples and to see it all compile. I will now work on filling a SD card with pictures and scrolling through them . You are one of the best ESP32 teachers on UKposts and have helped me immensely. I agree, a superb video.
@XTronical
@XTronical 3 роки тому
That's great, glad it helped.
@gegentan
@gegentan 3 місяці тому
This is the only video that made my tft display and touchscreen work! THANK YOU!
@XPERIA80
@XPERIA80 Рік тому
I have searched 1 day long till i can make working my ILI9488 tft with nodemcu, but thats was the only one tutorial what worked, thjank you for the tutorial.
@gordsh1
@gordsh1 Рік тому
Awesome instructional video. This was the best esp32 / eSPI video by far. Loved how you went through the steps very clearly with visuals. Thank you very much.
@asifmahmud2708
@asifmahmud2708 Рік тому
hey did you get any output on display? I am getting only white display. please help
@mb106429
@mb106429 11 місяців тому
Me too, but I'm getting an image using a different adafruit example with exactly the same pins defined and wiring. The example in this video compikes, uploads and runs, but the display is solid white. The output from the touch is also just pegged at z 4000 odd and x&y stuck at zero.... They move a bit when I touch it but y stays at zero
@briancampbell5685
@briancampbell5685 3 роки тому
Such a clear and concise video tutorial. Followed it precisely and all worked first time opening up my understanding of how to configure these displays for all sorts of projects I've now in mind. Thank you so much to taking the time and trouble to produce this excellent video. Brian Campbell (Bsc)
@XTronical
@XTronical 3 роки тому
Great stuff, glad it all worked.
@davidburke52
@davidburke52 4 роки тому
I've had a collection of the screens for a couple of years!! Finally get to use them 💪
@XTronical
@XTronical 4 роки тому
Brilliant
@queenidog1
@queenidog1 3 роки тому
I saw this video just at the point where I was moving my TFT display from Arduino UNO, to a faster, more memory MCU, since I wanted to add an SD card. Good timing!
@gideonmugo1465
@gideonmugo1465 3 роки тому
Man, what can I say about this video. Hmm..great is an understatement. What a superb video. Thanks a lot. You have just answered all the questions that I had about this type of LCD and its connections to esp32. Thanks a lot.
@XTronical
@XTronical 3 роки тому
Your welcome, glad it helped.
@michealmorrow1481
@michealmorrow1481 2 роки тому
This helped me wire up and ILI9486 and get touch working using TFT_eSPI. Thanks for the jump start.
@mr.meticulous1241
@mr.meticulous1241 4 роки тому
Dude thanks so much, this is the exact vid I was waiting for! There aren’t enough display tutorials for non-Arduino boards
@XTronical
@XTronical 4 роки тому
Great, it's fantastic when things are actually useful ☺️
@Parahooners
@Parahooners 2 роки тому
Great guide ! thank you for taking the time to talk through the SD JPEG - I had to remap the SPI to get it to work
@Parahooners
@Parahooners 2 роки тому
SPIClass spi = SPIClass(HSPI); spi.begin(SD_SCK, SD_MISO, SD_MOSI, SD_CS); if (!SD.begin(SD_CS, spi, 80000000)) { Serial.println("Card Mount Failed"); return; } uint8_t cardType = SD.cardType(); if (cardType == CARD_NONE) { Serial.println("No SD card attached"); return; }
@AnthonyHortin
@AnthonyHortin 2 роки тому
Thanks for this great vid. It was super easy to follow and you explained things really well 👍
@andrewkieran8942
@andrewkieran8942 4 роки тому
I love most of your videos but this one is a stand-out. A few other videos have tackled these boards, but none that I recall tackled all three functions; display, touch, and SD. Useful content, clearly presented!
@XTronical
@XTronical 4 роки тому
Thanks very much, comments like this make things worth while.
@albrody8861
@albrody8861 3 роки тому
Outstanding tutorial. Thank you for your hard work and I look forward to following you.
@wjn777
@wjn777 3 роки тому
I love your clear explanations. Thank you for sharing this video
@samunemeth
@samunemeth 2 роки тому
Best video explaining this! Been searching for this for ages! Thx!
@johnblack6134
@johnblack6134 2 роки тому
Thank you for an excellent video. Yes for work with the ESP32 it is all in the TFT_eSPI library and not the Adafruit_ILI9341 library. As for the ILI9488 - forget that one for the moment, but it works well with the Seeeduino Xiao.
@moeburn
@moeburn Місяць тому
Thank you very much for your video! All the guides for similar displays assume the touchscreen's SPI is connected to the display's SPI, and so the only wire you need is the T_CS wire. It wasn't working. I needed your video to understand that with this particular board, I have to manually short their SPI wires myself!
@paulhoshovsky877
@paulhoshovsky877 Місяць тому
Thanks for a complete detailed video. I discovered that I needed to supply +5VDC to the VIN pin. I was not getting enough current from the USB cable.
@XTronical
@XTronical Місяць тому
I've had similar issues with ultrasound sensors
@Nordic_Goon
@Nordic_Goon Рік тому
Thank you for this. Very clear and I'll be referencing this for a project.
@hera86468
@hera86468 10 місяців тому
Awesome tutorial. You should get more views my friend! I will be sharing this with my buddies!
@XTronical
@XTronical 10 місяців тому
Thank you very much for your kind words
@hazypugfluffgaming99
@hazypugfluffgaming99 8 місяців тому
Awesome video! Its my goto video for the wiring connections!
@donjackson3520
@donjackson3520 2 роки тому
Hi XTronical, fantastic video, Very Very helpful, thanks for posting this.
@TheDefpom
@TheDefpom 3 роки тому
I now have my 3.5” TFT touch screen working, I created a menu system as well to change settings on my ESP32 based 2 channel LoRa to wifi gateway, which I designed late last year, I did a video on it at the time but that was with a 2.4” OLED, before I added the TFT.
@TheBustyOnion
@TheBustyOnion 2 місяці тому
Awesome video with great explanations, thank you very much!!
@neilbarnett3046
@neilbarnett3046 3 роки тому
All very helpful. I wired everything up as all the diagrams that I found, modified my TFT_eSPI setup file with the right settings, turned on and nothing. After a while, I tried following your instructions to the letter, wire colours and all and it worked, even though everything I had done was exactly what you did, though I used an orange wire for CLK and a green for data, so maybe that was it. (Only kidding, I suspect that I've got a duff wire or a duff connection on my breadboard), but hey, thanks. Forget TFT_Meters, the TFT_Matrix example is super!
@XTronical
@XTronical 3 роки тому
Brilliant, ha ha deffo colours matter lol. Thanks for the tip.
@Hienix
@Hienix 2 роки тому
This is awesome!!! THere is just one detail, pins 21 and 22 are default for I2C on ESP32, and since I'm using SPI and I2C, I need to change CS pin, but all good, just would like to warn oter person when developing projects to take this in consideration.
@cooljackwi
@cooljackwi Рік тому
How to change these ports? i would like to connect an ADS1115 to the ESP throu I2C.
@XTronical
@XTronical Рік тому
Unfortunately this video will only work for I2S on this type of screen.
@cooljackwi
@cooljackwi Рік тому
I got it by my self (: but thx for Response. Just changed the Touch cs pin to 13 i think...
@jumbo999614
@jumbo999614 2 місяці тому
How to change to different pin if I need to keep it available for I2C connection? Which pin should I use? Do I need to modify user.setup.h?
@jumbo999614
@jumbo999614 2 місяці тому
@@cooljackwi If I change t_cs to 13, do I need to edit user.setup.h?
@marcelomacedo1022
@marcelomacedo1022 2 роки тому
Congratulations on the excellent tutorial.
@eogoneill
@eogoneill Місяць тому
Top Quality Video keep up the good work Bro...
@abhilashpatel1809
@abhilashpatel1809 2 місяці тому
thanks lot, I was so much in need of such video.
@daveb7999
@daveb7999 Рік тому
I have a lot to learn, this video is very helpful, Thank You! 👍❗
@anthonyvandenhondel865
@anthonyvandenhondel865 2 роки тому
Very nice explanation! Many thanks from a beginner maker
@Iskelderon
@Iskelderon 3 роки тому
Thanks! I'm currently working on my first project that will use an ESP32 instead of an Arduino and this is just what I was hoping for! It''s gonna be a WIFI-enabled clock that uses NTP and JSON over HTTP to retrieve the time and weather forecast and displays the information on an 60 LED ring and TFT screen.
@XTronical
@XTronical 3 роки тому
Cool, I did a weather forecast with esp32 and a paper display if that helps ukposts.info/have/v-deo/oqN7oaOkkKqYxKs.html
@NicholasRadina
@NicholasRadina Рік тому
Thank you! very helpful introduction!
@jeandilissen4197
@jeandilissen4197 3 роки тому
Thanks, just what I needed. Touch and SD card very good explained.thanks.
@XTronical
@XTronical 3 роки тому
Thanks for the feedback
@richardphillips1891
@richardphillips1891 11 місяців тому
This is a very helpful video. Thank you!
@unglaubichuberlieber8048
@unglaubichuberlieber8048 Місяць тому
thanks, very detailed, i will try it and enjoy this , again thanks !!!
@cooljackwi
@cooljackwi Рік тому
oh man so many thanks to you. that was straight forward (:
@BIOIV
@BIOIV 3 роки тому
Great Video...you solved my issue and saved me a ton of time!!!!
@krisakers8568
@krisakers8568 Рік тому
Thank you for this tutorial!
@redpillcommando
@redpillcommando 2 роки тому
Just got my screen in the mail today.
@trklclark
@trklclark Рік тому
Magnificent guide - I now have the Display section up. Didn't work first time - tried in Arduino 2.0.0 rc9.4 - lots of critical errors compiling - updated library, boards etc still failed Using ESP32 Wemos Lolin32 and 2.8" ILI9341 TFT LCD. errors like undefined min(_h,_w) etc, got the latest tft_eSPI from GIT hub, same no matter what example I tried. So I deleted all my arduino installations, and folders, Libraries etc. Then installed fresh IDE 2.0.0 Rc9.4, added ESP 32 boards , added tft_eSPI from the IDE 2.4.72, edited the User_Setup.h file as advised, compiled with a few warnings about the Changed pin assignments - but no errors, Uploaded - and I'm a happy man! many happy displays. ( TFT_Meters.ino example)
@XTronical
@XTronical Рік тому
Well done, great determination there 👍
@walterpredari4358
@walterpredari4358 3 роки тому
Thank you! Great library!
@XTronical
@XTronical 3 роки тому
Thank you for the feedback
@halalbach1855
@halalbach1855 3 роки тому
Great presentation! I did run into a minor problem with the Meters script, was getting 6 warnings "ISO C++ forbids converting a string constant to 'char*' " and pointed to 6 lines (44-49) in void setup. Although the script compiled and loaded fine and the meters displayed beautifully on my display, I still did not like having those warnings. Did a little research and learned that Warnings usually mean that your program may or may not work. Those 6 lines called a function (plotLinear() with three parameters, the first of which was "A0" thru "A5". Located the function void plotLinear(char *label, int x, int y) and changed it to void plotLinear(const char *label, int x, int y) and the warnings disappeared. Script compiles and loads and runs just fine.
@LordPhobos6502
@LordPhobos6502 Рік тому
REALLY??? I'm gonna try that, mine refused to compile on that error.
@cornjulio4033
@cornjulio4033 3 роки тому
I like your style, MATE. Subscribed.
@XTronical
@XTronical 3 роки тому
Cheers
@spacprodmyspac833
@spacprodmyspac833 3 роки тому
Thank you very much, it works like a charm, so fast: incredible !!!!
@XTronical
@XTronical 3 роки тому
Brilliant, thanks for the feedback
@parvezalampolash1086
@parvezalampolash1086 3 роки тому
great video! so easy to understand.Thanks!
@Slider2732
@Slider2732 4 роки тому
Perfect timing! Got a non touch ili9341, DFplayer Mini and ESP32 in front of me. Problem has been brown outs. Was going to swap for a Bluepill STM32, but will try the Bodmer library before ripping it apart (probably literally lol).
@XTronical
@XTronical 4 роки тому
If powering from the computer over usb then check the quality of the cable. I've had some drop quite a bit of voltage by the time it gets to the dev board. Gave me a few headaches once when using an ultra sound sensor. Use shortest quality cable you can. Hope this helps.
@Slider2732
@Slider2732 4 роки тому
It does help, thanks, forgot all about daft 40 gauge wires with the oversized sleeving - this will be one! Thanks for your fast reply too :)
@edwardhammock24
@edwardhammock24 Рік тому
A fantastic video. Many thanks.
@MrHenriqueon
@MrHenriqueon 4 роки тому
Muito Bom! Fiz os testes aqui.
@ArnovSharma
@ArnovSharma Рік тому
super helpful mate. thanks!
@abymohanan9403
@abymohanan9403 2 роки тому
Thank you so much for this video
@stevecheng439
@stevecheng439 3 роки тому
Thanks a lot for your help!
@gredennight
@gredennight 13 днів тому
thank you so much!
@aldinmarchetti
@aldinmarchetti 2 роки тому
Gracias!!! Excelente explicación!
@richardspann6911
@richardspann6911 Рік тому
Great job!!!
@Tony770jr
@Tony770jr 3 роки тому
Nice tutorial!
@sebastiendelcasso
@sebastiendelcasso 2 роки тому
thank you, it was very helpfull to me !
@WahidKhan-rx9jo
@WahidKhan-rx9jo 3 роки тому
Very useful , thnx , got mine working thanks to your video...
@XTronical
@XTronical 3 роки тому
Brilliant
@nikoskalousis3523
@nikoskalousis3523 3 роки тому
Really helpful video, thank you very much!
@XTronical
@XTronical 3 роки тому
Brilliant, glad it helped
@shorelinefilms9661
@shorelinefilms9661 Рік тому
For anyone with touch issues using the most recent version of tft_espi. Make sure to disconnect sdo(miso) it should be connected to nothing. Connect t_clk to pin 18. Fixed my issue.
@XTronical
@XTronical Рік тому
As you can see in the video it all works. And if you look through the comments you will see it's worked for many people. Did you use the exact same version of the library and did you read the pinned comment about the bit I missed about the touch screen? I think it's mentioned in the video description too. Did you read that?
@shorelinefilms9661
@shorelinefilms9661 Рік тому
@@XTronical this was a video from 2 years ago. I'm assuming the version I am using is different. I apologize for coming off blaming you for the issue. Let me edit the comment. Thanks for your content btw!
@andreasbjerreovergaard4641
@andreasbjerreovergaard4641 3 роки тому
I would recommend connecting touch cs to screen cs so you can keep pin 21 for i2c as for instance a bmp pressure sensor will spam the touch with input. Remember to change #define TOUCH_CS. Thanks for the project but i think it needs wiring diagrams.
@JayUnderCover
@JayUnderCover Рік тому
Is this possible because the touch controller is only sending data to the esp32, and the display controller is only receiving data from the ESP32. So they can technically run at the same time anyway? Does this speed things up so the display doesn't lag behind the touch input?
@XTronical
@XTronical Рік тому
I'd have to Check but as long as the touch controller waits until the esp32 is ready to receive data after generating its interrupt then should be OK. But would have to examine library's. As if esp32 half way through sending data to screen and starts servicing the touch then could cause corruption. The potential is there, I just haven't looked how the library's work
@h4mp3l
@h4mp3l 3 роки тому
If you take a look at the sources of Bodmer's lib you can see that in some cases he is pulsing the chip select within a method. But in your code it looks like you are wrapping the chip select enable/disable in front of/after the method calls on the lib. Doesn't this affect operation? Or are the ili displays not dependent on these pulsings? I was thinking about replacing the esp's gpio chip select with a gpio expander for all cs lines but just have an mcp23017 (i2c) at home atm which is ok as i am not relying on high update rates. A mcp23s17 (spi) would speed up operation quite a bit though.
@wei48221
@wei48221 4 роки тому
This is awesome!!
@XTronical
@XTronical 4 роки тому
Thanks
@usmanumer9871
@usmanumer9871 3 роки тому
nice work
@greyluk
@greyluk 10 місяців тому
You saved me! Thank you
@XTronical
@XTronical 10 місяців тому
Glad it helped.
@usmanumer9871
@usmanumer9871 3 роки тому
all in one . fantastic video
@XTronical
@XTronical 3 роки тому
Thank you for the feedback
@lanedj801
@lanedj801 2 роки тому
Well made video. Makes me believe I can do it!
@XTronical
@XTronical 2 роки тому
You can!
@ibis3065
@ibis3065 Місяць тому
Creo enjoyer = BASED
@MrBobWareham
@MrBobWareham 6 місяців тому
Very nice video thanks
@colinrcarter
@colinrcarter 3 роки тому
Thanks for the great video but please note the affiliate link for the screen takes me to the non-touch version, I only realised once it arrived!. Otherwsie great work thank you.
@XTronical
@XTronical 3 роки тому
Thanks for your feedback. Sorry about that, Amazon can be not so good as it shows it does touch in the pictures (you can see the connections), have you been sent one that doesn't match the images? You should be able to get it swapped if yours doesn't have the connections as it definitely shows them
@hl293
@hl293 3 роки тому
Thanks so much for this video! I've got a question. These display boards have a jumper "J1" for selecting the voltage. In your case for the ESP32, did you need to short this jumper "J1"? Just want to confirm before I do something stupid with my board...
@XTronical
@XTronical 3 роки тому
Yes, short the jumper if using ESP32, leave alone (how they come by default) if using Arduino. Nothing bad happens either way for ESP32 apart from it may not work if you do not short it. Mine worked and then stopped when I added one more component to the project. For Arduino it may break the screen if you short it so leave un-shorted.
@narsimloobegari5233
@narsimloobegari5233 3 роки тому
Is there a video on 3.5" TFT LCD ILI9486 with ESP32 board?
@finnyfunplace824
@finnyfunplace824 3 роки тому
Amazing .. Many Thanks ..
@XTronical
@XTronical 3 роки тому
Glad it was useful
@MPElectronique
@MPElectronique 11 місяців тому
Hello, nice. Just put this at the beginning of your sketch: #define min_ (a,b) ((a)(b)?(a):(b))
@sirthug1702
@sirthug1702 18 днів тому
hi there is there a big display for esp32 available like the one used in this video but it is not touch screen but a simple diplay?
@bens4446
@bens4446 Місяць тому
I got Compilation error: no matching function for call to 'min(uint16_t&, uint32_t)'. Fixed it by changing min() function to jpg_min().
@Teddyves4488
@Teddyves4488 9 місяців тому
Thank you very much! I was struggling so bad with my ILI9341. Thanks to you I managed to edit the user_setup.h so it works. The SD-Card won't work, but I guess thats due to the lack of connections on my expansionboard. I've ordered this bundle "Esp32 arduino wifi & bluetooth 2.8 "240*320 smart display bildschirm lcd tft modul mit touch ESP-WROOM-32" from aliexpress and was hopping, that all connections on the ILI9341 were lead to one side. One question: How do you delete the touch-calibration? On the first start after uploading the sketch, the touchscreen had quite a delay and so I've touched the same corner twice...🤦 Now "touch corners as indicated" shows again, but neither my finger nor the pen works. Uploading the sketch again didn't help
@Erik-vv5oy
@Erik-vv5oy 7 місяців тому
Thank you very much for this tutorial it helped alot! Unfortunatelly i cant get the screen to work on full screen, there is a 1/4 gap which only shows white. Im using the same components can you help me out?
@XTronical
@XTronical 7 місяців тому
I don't think I've heard of that before. Does that appear before even drawing anything on screen?
@IVAN3DX
@IVAN3DX 4 місяці тому
Is there a similar library for esp-idf?
@danilocarrara7494
@danilocarrara7494 10 днів тому
Hi! Do you kno if is possible to integrate this lib with a 4' inch display? I've tested with a ILI9488 spi display, but like 30% of the display didn't show anything, I mean were blank, just the others 70%. I use a resolution of: 480 × 320. Thanks
@user-wi8ob4bo7h
@user-wi8ob4bo7h 6 місяців тому
Хотя язык и не понимаю, но наглядно просто отлично и понятно. Спасибо.
@BilalKhan-do9il
@BilalKhan-do9il 2 роки тому
Will this connection work on 3.5 in tft arduino uno shield, tft is shield and i want to use it with esp 32! So please tell me how to do that
@impresent3398
@impresent3398 6 місяців тому
Ok good one
@starlingloko
@starlingloko Місяць тому
thansk it help me
@sunpeter8260
@sunpeter8260 Рік тому
A superb tutorial! But is it right you already use D21 for CS of the SD? Should the CS of the touchpad be changed to D5 as in your video?
@XTronical
@XTronical 11 місяців тому
Yes, as they both need there own CS
@no.5769
@no.5769 Місяць тому
thank
@GetRealwithMike
@GetRealwithMike 7 місяців тому
I want to make it with the Relative Humidity reader just like you show. Can you show how to make it save data to a data logger? I am doing atmospheric research. I want to create a device that can be worn that will collect data in different environments inside and outside. Because it is wearble, I don't want it bulky or heavy. The data logging is for reviewing at a later date away from the location. Thanks
@XTronical
@XTronical 7 місяців тому
Did you mean this comment to be under the humidity sensor video I did? Anyways, basically you'll need to hook up to a sd card interface (videos on this) and make the Arduino go into deep sleep to save power (as battery powered) and just save to a text file on sd card in comma delimited format. This will load up straight into excel etc. I've done a weather centre project which shows deep sleep and sd card etc.
@randomsporadicprojects8941
@randomsporadicprojects8941 4 роки тому
Very useful - thank you. Spurred on by your demo I've now got a touch screen gui for my home automation :) Are you aware of any way to control the backlight? - all I've seen so far are mentions of cutting traces and soldering a transistor.
@XTronical
@XTronical 4 роки тому
Yes, just connect it to an output pin instead of vcc. Setting pin high will turn it on, low off. You could even use pcm to give varying brightness. Arduino's and esp32 outputs can cope with the current required, although you could measure it first if you wanted to be doubly sure.
@randomsporadicprojects8941
@randomsporadicprojects8941 4 роки тому
@@XTronical Thanks - I'd tried that without success - will give it another go, as I must have done something daft.
@anselmus0219
@anselmus0219 Рік тому
terima ksih bro
@williamellender2695
@williamellender2695 2 роки тому
Thank you so very much for the tutorial! I have built this and it works great! I use it in a cosplay device for our Mandalorian groups and it has been an absolute hit! Im wondering, would it be too difficult to have two screens running on the one ESP32, each running different pictures?
@XTronical
@XTronical 2 роки тому
Thanks. Yes, that sounds possible as each would have it's own chip select wire. Create two screen objects, one set to one chip select and the other to the other chip select. The other connections remain the same.
@williamellender2695
@williamellender2695 2 роки тому
@@XTronical I would really like to have a conversation with you about getting this idea to work! Any chance you can message me directly?
@XTronical
@XTronical 2 роки тому
Hi, sorry I don't have enough time for one to one support etc. But I will consider this as a video for the channel.
@billfield8300
@billfield8300 2 роки тому
Thanks for the tutorial. Great information. These screens come with basically no data so its all about what we can glean from the internet. That said, I have not been able to find anywhere, the power requirements. I am designing a project using this very screen and was wondering if you have any power consumption measurements. Thanks again for the great vid.
@XTronical
@XTronical 2 роки тому
I don't have any figures handy. But one think you can do is pulse the back light to provide differing levels of brightness. This can reduce power requirements.
@billfield8300
@billfield8300 2 роки тому
@@XTronical Thanks for the reply. Im not so worried it will be too high. I just want to know the value so I can choose the appropriate linear regulator. Thanks again.
@billybbob18
@billybbob18 2 роки тому
I'm using my ili9341 with an ESP32 in 8 bit parallel mode. I has no idea that these screens can be so fast. It makes SPI seem sluggish.
@bens4446
@bens4446 Місяць тому
I'm doing this on an ILI9488. I got the meters demo to work, but can't read from the SD card. ("Card Mount Failed.") There is an ominous warning next to the ILI9488 option in the User_Setup.h file about not connecting SDO and MISO to same SPI bus, which is Greek to me, but might be the problem? EDIT: Nevermind, got it to work. Problem was my bad soldering. Works with Bodmer's test script, still can't get your code to automatically detect and display jpegs. I'll figure it out soon enough though. Thanks!
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