LCD128x64 using only 3 Arduino pins
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- เผยแพร่เมื่อ 2 ธ.ค. 2017
- LCD128x64 using only 3 Arduino pins
The ST7920 chip supports parallel and synchronized serial interface (SPI) mode. You can choose which mode to use by setting the PSB pin high or low.
Using this mode you need only 3 pins (SCK, MOSI and CS) on the Arduino to control the lcd
::::::::::: SUPPORT CHANNEL ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
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Thanks for uploading this easy to understand video. I couldn't get my display to work, until I found this video and found that PSB was hardwired by soldered link for parallel operation. Works fine now!
A great tutorial, worked perfectly for me. The connections to the Arduino can be further reduced by attaching the LED anode and cathode to the VCC and GND pins with jumper wires.
Great! That worked for me. Thank u so much!!!
Nice. I got it work by following your video. Thanks!!!
It worked for me. Thank you!
Which way did you turn the screw thing on the back? Mine is just lighting up and not showing any words not sure if its broken or just need to adjust it
Класс!!!!! Кратко и понятно автор описал подключение дисплея и работу с ним!!!!!!!
Good video ! thanks much.
thank you so much
Thanks Bro.. This is very useful
This was a great video. You might want to pause a bit longer when typing in the sketch setup. Question : the sketch has pinMode(8, OUTPUT); in it. What was the purpose of that, since pin 8 is not connected? Also, can the letters be scaled? Forgive me if these are dumb, pretty new to all this.
Pin 8 is connected to the lcd's reset.
Warning .
In some model ( my model should be the model "A" ) there are two connectors ( R9 and R 10 ) to accept a resistor of 0 Ohm .
So in model "A" it's unuseful connect the pin PSB ..... the resistor of 0 Ohm will decide how the display will works .
Threfore , when you find the connector for R9 welded with a resistor of 0 Ohm the display can works only on parallel mode , while when you find the connector for R10 welded with a resistor of 0 Ohm the display can works only on SPI mode .
I think that for experiments in different mode ( SPI or parallel ) the better thing could be remove the resistor of 0 Ohm ( in R9 or in R10 ) and set the pin PSB by GND or by Vcc like in this video
Thank you very much Hưng Nguyễn Quốc , and , of course , thank you to Maker Tutor .
Hi! Do you know if is there any pin that acts like an SS pin on the display? Thanks
PSB to GND not needed
I was looking at a way to avoid connecting the PSB pin to GMD on the arduino by finding GND points on the board. I found several the place of note is JP2, next to the row of resistors above the contrast pot.
the centre pad is connected to PSB the top to GND and the bottom to 5V.
All you do is short the 2 pads of your choice to get either SPI or Parallel it is even printed on there S and P.
That's one connection saved
Obrigado pelo otimo video e conhecimento, tem como transformar essa biblioteca para se usar com pic18f, no compilador mickro c?
süper thanks much
The boards I received are missing the C6, C7 and C8 capacitors. I read they are Genuine Samsung capacitors to reduce interference. Will it still work?
Very good!
I like this display
Congratulations. I really like very yours videos . i am from brasil and difficult explications correct arduino. Thanks.
Meus parabens. Gostei do seu video. Sou do brasil é difícil explicações corretas dobre arduino. Obrigado
this video helped me a lot
Nice.
The preset on the back of the PCB adjusts LCD contrast not brightness.
thanks a lot, i was almost about to throw it to bin after i gave 24v to Ramps1.4 and blew up my mega board
It can use egs002 module ?
where i can download the library ? thx
Can you make an egg incubator useing this lcd display
remove " U8G_PIN_NONE" and save 200 bytes of code space.... test with and without for compatibility etc
Plz how can I used Display LC7981 Graphic Monochrome 240x128 Dot Matrix Lcd Module With arduino uno
is this work on nodemcu v3 (esp8266)?
Sorry but you reversed the pins on BLK-5v and BLA-GND you had it backwards watch that part of Video!
should you notice everyone to remove the resistor R9 first! My lcd had been broken ((
with model b it is not necessary
Why arent you telling everyone that once you load the U8G Library and fonts, you have less than 4Kb Memory space for your sketch. The only option is to use a ESP8266 or ESP32 or STM32
8 pins
Sugestão de reaproveitamento de display de sucata para usar com Arduino: th-cam.com/video/eWxXGGslvw8/w-d-xo.html
Writing error...
guess what i can control it with just one chord seriously how smart i am you may ask? i say i need to get off the afghan sweets and the really smart ones out there challenge given, accept it and if you show me a TH-cam vidz of proof just for accepting this ground breaking task ill buy the lucky first person who does prove it online on youtube showing me the one chord connection ill send you a Arduino and Lcd for your hard effort ,,, thoes of you who know dont spoil it for the other smart cookies out there for who i can just see them scratching there head for days weeks months trying to turn it on and completely control it with a single chord how the fuck does it get switched on and off and get controlled by only ONE CHORD , well if you have nothing else to do you may as well im good for it, TRY ME id love to see someone show me they smarter then me challenge. BUT STRAIGHT OUT IT HAS TO BE PROOF ON TH-cam ONE MINUTE MINIMUM OF YOU DOING THE ON OFF AND CONTROL, I WISH YOU ALL THE LUCKS AND THANKS TO THAT ONE SMART COOKIE................................................Competition closes midni8ght 31st December 2021