This is one of my all time favorite tutorials. Thank you for doing this. I was searching on how to READ data back from the LCD and found this video. By doing it manually, it made it crystal clear what I needed to do via a PCF8574 I2C interface chip. Very impressive work.
I myself are the happy owner of an LCD with only a humble two lines of sixteen characters. For more then a year now I an looking at it, and nothing happens while and because I don't do anything, but this is a great inspiration. You ought to become a motivational speaker, not the one that is hanging on the wall but the well paid one, the one that goes without the wires.
I really liked seeing this. Got my first 1602 (I2C) and it's working with a M5Stack StampS3/ESP32 on the next day. In Arduino IDE, the library doesn't allow the pins to change, so it's done from "Wire.h" and we can't use lcd.begin(), but lcd.begin(16,2) goes through and lcd.init() works. The worst is something like M5.begin(), (needed sometimes in my case) will block pins and create something I don't know for sure. My next attempt is more attempts with a 1637 that isn't I2C, but almost. In between, I get another module going. A GPS module was quite mind blowing to dig into. ESP-Now is also new to me.
Thank you Ian for posting this and other videos. I have followed this tutorial and finished it on breadboard. Now I am working on making the 20x2 lcd display project in a project box.
finally... I bought 5 az delivery hd44780 lcd 16x2 and they dont come with microcontroller, but since they have the pin connections I was looking for a tutorial to see how they work and how to make then function without the controller I have an arduino uno and an elego that is a copy of the arduino uno, so I wanted to know if it was possible to make it work without the controller, and seing this tutorial makes me believe I can... yes I know this is a different screen, but I have to try it even if I burn one of the screens I dont care cause they were cheap and I can always buy more, but I got to learn somehow so I will try to make it display stuff and look for the datasheet to see all the functions they have and try to make it work without the controllers :) Every other video talking about this cheap lcds all talk about the I2C controller, but I dont have any, and meanwhile, while Im waiting for it to arrive I have to try and make it work and learn how they work mechanically before going into easy made code cause if I learn it the manual way, it will be easier when I get to the programable way ;) Thank you a lot for this video I wish more people would explain stuff like this instead of just showing other products and copy paste code from others to make it work the easy way... I also know that if you are just looking for a fast way to make things work for diy projects, the other videos are great, but I like to know how things work before making any kind of project so when I get stuck, if I go the easy way, I can debug it better knowing how it works. Once again, thank you very much for sharing this...
Nice info, I have for lines activated but can not go to line 4 ? any ideas ? Init Code lcd_send_cmd (0x28); // Function set --> DL=0 (4 bit mode), N = 1 (2 line display) F = 0 (5x8 characters)
That's awesome. Let me know how it goes! I'm using an IC socket for the DIP switches because the pins aren't long enough to go into the breadboard otherwise
@@IanWard1 my ic sockets are like the many red switches I have and they don't stick in either. I may finagle a better way to use it by hotglueing it to female headers that resemble your dip sockets. I'm going to do it tomorrow
@@IanWard1 hey man. I figured since we spoke before I'd bounce this idea off you. I think we spoke about an in box vic20 (unfaded) with the original manual and a floppy drive. I run a personal charity where I anonymously donate electronic engineering related arduino kits to people who can't afford it or who want to learn and I include a nice dmm and an arduino kit based on the 100cad elegoo most complete arduino kit. I used to advertise the kits but I've decided to just go all out for a school or a makerspace where elderly and disabled people attend and they can take the stuff home or have it to use at the space or school. I plan on having 15 kits which I already pretty much have, a new 2 channel dso with a function gen and a new 3d printer(with 20 rolls of pla I already have) along with a bunch of supplies like wire and stepper motors, big servos and bldc ones for building robotics or anything really even a large number of ics for logic, voltage, opamps. No soldering irons though. I don't want someone to burn themselves because of me haha. I'm doing this as a one time thing as part of my therapy for ptsd from being a first responder for my whole working career despite having a software engineering degree I never used haha. Sorry for rambling, there's a reason because I want to come off as sincere and I can prove who I am and all this. Anyway, I'm looking to sell the 8 bit computer to help fund this endeavor. I'm not looking to get a fortune for it and the problem is I don't know where to sell it. I checked ebay and all that and I only want barely half the going rate for what it's worth. Like 150cad plus shipping. That will get me 8 more digital multimeters. Sorry if I seem weird but you seem like someone who would be able to know someone or something. If not that's cool. I haven't even tested it yet but I'm sure it works. It is as if it were bought and used for a few weeks and put back in the box haha. There's a joystick and some generic game carts. I'm going to test it on an analog TV I have in our basement lol. Anyway. I appreciate you reading this diatribe. I'm sending out feelers to everyone I know of. Haha anyone in Canada or north America preferably. I can prove who I am and all that to anyone who is interested by letting police dispatch know someone might call asking if I'm a real person and where I live haha. Peace man
Trying to read them from this screenshot excess.org/lcd2004-tutorial/ it looks like I used 10k for the debounce, pull-up and pull-downs; 390 for the blue LED and 220 for the other LEDs
Trying to read them from a screenshot it looks like I used 10k for the debounce, pull-up and pull-downs; 390 for the blue LED and 220 for the other LEDs
Is there any way you could upload hi-res photos of all your breadboards I’m going to build them all. I have binge watched everything you have uploaded to RUclips.
hello friend, nice project and good explanation. I'm started in embedded system, I already have some sub-routine work for controller lcd 40x02, with atmega 328p with ST7066 driver. but I have a problem with the "function set" I can't choice the fonte size 5*11, only can work with 5x8 dots font size. can you help me please try understund with can´t put the function set work correctly? thanks for your time
This is one of my all time favorite tutorials. Thank you for doing this. I was searching on how to READ data back from the LCD and found this video. By doing it manually, it made it crystal clear what I needed to do via a PCF8574 I2C interface chip. Very impressive work.
Too underrated video. Very useful to avoid Arduino shitlibraries
The most comprehensive and easy to follow-along RUclipss ever made....Sir u have my respect...
RUclips Videos*
Wtf is "a" youtube tho
WAIT A MINUTE, IVE BEEN HERE BEFORE?!?!?
@@HashirEasaAlzheimercore
@@RizzMonster69 i would like to apologize as i havw no idea when i said any of that so yes very alzheimercore 💀
Another great video. Wish I had found this before the CPU project. It clarifies so much that was intially obscure to me in the CPU series. Thanks!
I myself are the happy owner of an LCD with only a humble two lines of sixteen characters. For more then a year now I an looking at it, and nothing happens while and because I don't do anything, but this is a great inspiration. You ought to become a motivational speaker, not the one that is hanging on the wall but the well paid one, the one that goes without the wires.
sounds like a good next career idea
@@IanWard1 epic
I really liked seeing this.
Got my first 1602 (I2C) and it's working with a M5Stack StampS3/ESP32 on the next day. In Arduino IDE, the library doesn't allow the pins to change, so it's done from "Wire.h" and we can't use lcd.begin(), but lcd.begin(16,2) goes through and lcd.init() works. The worst is something like M5.begin(), (needed sometimes in my case) will block pins and create something I don't know for sure.
My next attempt is more attempts with a 1637 that isn't I2C, but almost. In between, I get another module going. A GPS module was quite mind blowing to dig into. ESP-Now is also new to me.
This is incredible. Of all the mini screens I have I do not have a 2004. I just ordered one. I have everything else.
nice
Thank you Ian for posting this and other videos. I have followed this tutorial and finished it on breadboard. Now I am working on making the 20x2 lcd display project in a project box.
Awesome tute, thank you. I learned a lot and it was very helpful.
Thank you for your surprise, it was a great help
finally... I bought 5 az delivery hd44780 lcd 16x2 and they dont come with microcontroller, but since they have the pin connections I was looking for a tutorial to see how they work and how to make then function without the controller
I have an arduino uno and an elego that is a copy of the arduino uno, so I wanted to know if it was possible to make it work without the controller, and seing this tutorial makes me believe I can...
yes I know this is a different screen, but I have to try it even if I burn one of the screens I dont care cause they were cheap and I can always buy more, but I got to learn somehow so I will try to make it display stuff and look for the datasheet to see all the functions they have and try to make it work without the controllers :)
Every other video talking about this cheap lcds all talk about the I2C controller, but I dont have any, and meanwhile, while Im waiting for it to arrive I have to try and make it work and learn how they work mechanically before going into easy made code cause if I learn it the manual way, it will be easier when I get to the programable way ;)
Thank you a lot for this video I wish more people would explain stuff like this instead of just showing other products and copy paste code from others to make it work the easy way...
I also know that if you are just looking for a fast way to make things work for diy projects, the other videos are great, but I like to know how things work before making any kind of project so when I get stuck, if I go the easy way, I can debug it better knowing how it works.
Once again, thank you very much for sharing this...
Nice info, I have for lines activated but can not go to line 4 ? any ideas ?
Init Code lcd_send_cmd (0x28); // Function set --> DL=0 (4 bit mode), N = 1 (2 line display) F = 0 (5x8 characters)
Excellent video!
amigo eu te amo
muito obrigado você é abençoado
Excelente, 1000 gracias!
Fabuleuse and interesting cours
How did you mount the dip switch like that? My screen arrived already. I'm going to go at it alone and use this great video as a reference
That's awesome. Let me know how it goes! I'm using an IC socket for the DIP switches because the pins aren't long enough to go into the breadboard otherwise
@@IanWard1 my ic sockets are like the many red switches I have and they don't stick in either. I may finagle a better way to use it by hotglueing it to female headers that resemble your dip sockets. I'm going to do it tomorrow
@@IanWard1 hey man. I figured since we spoke before I'd bounce this idea off you. I think we spoke about an in box vic20 (unfaded) with the original manual and a floppy drive. I run a personal charity where I anonymously donate electronic engineering related arduino kits to people who can't afford it or who want to learn and I include a nice dmm and an arduino kit based on the 100cad elegoo most complete arduino kit. I used to advertise the kits but I've decided to just go all out for a school or a makerspace where elderly and disabled people attend and they can take the stuff home or have it to use at the space or school. I plan on having 15 kits which I already pretty much have, a new 2 channel dso with a function gen and a new 3d printer(with 20 rolls of pla I already have) along with a bunch of supplies like wire and stepper motors, big servos and bldc ones for building robotics or anything really even a large number of ics for logic, voltage, opamps. No soldering irons though. I don't want someone to burn themselves because of me haha. I'm doing this as a one time thing as part of my therapy for ptsd from being a first responder for my whole working career despite having a software engineering degree I never used haha. Sorry for rambling, there's a reason because I want to come off as sincere and I can prove who I am and all this.
Anyway, I'm looking to sell the 8 bit computer to help fund this endeavor. I'm not looking to get a fortune for it and the problem is I don't know where to sell it. I checked ebay and all that and I only want barely half the going rate for what it's worth. Like 150cad plus shipping. That will get me 8 more digital multimeters. Sorry if I seem weird but you seem like someone who would be able to know someone or something. If not that's cool. I haven't even tested it yet but I'm sure it works. It is as if it were bought and used for a few weeks and put back in the box haha. There's a joystick and some generic game carts. I'm going to test it on an analog TV I have in our basement lol. Anyway. I appreciate you reading this diatribe. I'm sending out feelers to everyone I know of. Haha anyone in Canada or north America preferably. I can prove who I am and all that to anyone who is interested by letting police dispatch know someone might call asking if I'm a real person and where I live haha. Peace man
Great demonstration, what are the value of resistors?
Trying to read them from this screenshot excess.org/lcd2004-tutorial/ it looks like I used 10k for the debounce, pull-up and pull-downs; 390 for the blue LED and 220 for the other LEDs
Trying to read them from a screenshot it looks like I used 10k for the debounce, pull-up and pull-downs; 390 for the blue LED and 220 for the other LEDs
Thanks for the video . Really Helpful. Liked and Subbed
Fantastic
Nice way to use my 16×2 lec module i bought because it looked interesting but sits on my desk collecting dust ever since
Did it work?
@@IanWard1 yes :)
Awesome work! Liked and subbed 👍
Is there any way you could upload hi-res photos of all your breadboards
I’m going to build them all. I have binge watched everything you have uploaded to RUclips.
There are some images on excess.org/cpu/ do they work for you?
@@IanWard1 thanks
could we save this to pc ?
hello friend, nice project and good explanation. I'm started in embedded system, I already have some sub-routine work for controller lcd 40x02, with atmega 328p with ST7066 driver. but I have a problem with the "function set" I can't choice the fonte size 5*11, only can work with 5x8 dots font size. can you help me please try understund with can´t put the function set work correctly?
thanks for your time
IIUC the HD44780 controller is capable of using 5x11 fonts but your LCD 40x02 only supports 5x8 fonts, so setting this option won't work.
Is it possible to display hundreds of English words sequentially?
Omg crack at this gameee
How many volts power supply are you using;
I'm using a bench power supply set to 5v in this video but it also works with the 5v power lines from a regular cheap USB charger.
Liked and subbed :D
:D