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Questions tagged [lcd]

Liquid Crystal Display. For questions regarding connection and control of small LCD displays.

2
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2answers
32 views

HELP, undo code that was for another touch LCD screen. Now it won't boot all the way

How can I undo the sudo code that was run with the wrong type of LCD "...-show" The system boots to a certain point and then just does not continue. Ive tried mounting the micro sd and see if I can ...
3
votes
1answer
208 views

LCD TFT screen 2.8" ILI9341 SPI connect

It is possible to connect this LCD TFT screen to the raspberry 3 model B please ? I don't understand the schematic for SPI connection. Any help is welcome thank you. I have follow this answer but it ...
2
votes
1answer
200 views

Is it possible to connect a Nintendo DS screen to a Raspberry Pi?

Is it possible to connect a Nintendo DS screen to a Raspberry Pi without the touch capability, or should I just buy another TFT?
1
vote
1answer
91 views

HDMI + GPIO Dual Screen

I am running Raspbian 4.19.34 with HDMI monitor (FullHD). I bought 5" LCD which connects to Raspberry using GPIO pins (by rpi rgb lcd and vga board). I am trying to get it to work like 2 screens. ...
1
vote
1answer
27 views

Earliest place in boot for output to I2C LCD (not HDMI)

We're using an embedded Raspberry Pi that uses a (I2C) 4x20 LCD (character) instead of HDMI. Since the boot process can take some time I'd like to get something on the LCD as soon as possible to say ...
1
vote
1answer
36 views

Connect touch screen 3.5" LCD and MCP3008 at the same time

Reposting this question asked by someone else a few years ago because it was unanswered and I am facing the same problem. I want to use a touchscreen LCD (3.5" TFT) and a MPC3008 ADC at the same time ...
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0answers
30 views

Raspberry pi3 TFT screen setup

EDIT: This is the the screen I bought This is my first post here so I hope I do not screw up too much... I have a raspberry pi3 with 3.5inch tft resistive touchscreen display (720x480) connected via ...
0
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0answers
19 views

Can I set up a Raspberry Pi 3 to use kedei lcd 3.5 with Android?

I have seen versions of Raspbian and Ubuntu which can be loaded on a Pi3 that support the KeDei LCD 3.5. I am hoping that I would be able to find a version of drivers and instructions if not an image ...
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0answers
32 views

Connecting Raspberry Pi to old found TFT display

I have an old car DVD player sitting around that has a fairly decent secondary TFT LCD screen (hannstar 721h440b19-a1) that I thought I could use with my Raspberry Pi 3 Model B. I opened up the unit,...
0
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0answers
50 views

LCD Display with I2C gives garbage when called by interrupt

I have problems with a 2x16 LCD Display controlled via I2C. I use python 2.7 and have a Raspberry Pi Zero W. When called from the main loop everything works fine and I can access the display with ...
0
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0answers
31 views

Converting C driver to NodeJS

I am looking for a bit of guidance. I am attempting to convert a Arduino LCD driver to nodejs. LCD:https://www.dfrobot.com/product-1737.html - spec PDF after bottom. I have researched I2C protocol, ...
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0answers
11 views

How can I make my touch lcd screen to work like a laptops touch pad

How can I make my touch lcd screen to work like a laptops touch pad? Is it possible because I am not able to access the corners of the lcd and I can't use the Pi correctly. Is it possible to make it ...
1
vote
1answer
131 views

Change back from LCD driver

I've successfully installed this 3.5" LCD display, which uses this LCD driver: https://github.com/goodtft/LCD-show. My problem is, that when I use VNC to remotely access the PI, (I assume) because of ...
2
votes
1answer
138 views

SPI access via C# .NET Core console app

I do not have much experience with C# or Linux/Raspbian so would like some advice/guidance please. Basically I need to write a C# .NET Core console app which will run on a Raspberry Pi Compute 3 ...
1
vote
1answer
95 views

How to connect 6 LCD 16x2 to a Raspberry Pi 3?

I need help with this project. I want to connect SIX LCD 16x2 screens to my Pi and send different messages between the screens. I was wondering if I could use I2C but there is a problem with the ...
0
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0answers
155 views

Touch screen functionality not working on raspberry pi zero w and 5 inch lcd screen

I have a raspberry pi zero w and a 5 inch lcd touch screen with hdmi. I have the raspberry pi connected to the screen by HDMI. I am running the latest raspian OS on it. It boots up and starts just ...
1
vote
1answer
126 views

Will either of these displays work on the Raspberry Pi DSI connector?

I came across two different DSI LCD touchscreens (1, 2), but I'm not clear if they will work on the Raspberry Pi, but more importantly, I'm not clear on what specs i should be looking at the check if ...
0
votes
1answer
73 views

Is splitting a wire off of a single 5V pin the same as using two 5V pins? [duplicate]

In other words, is two 5V pins plugged into two pins on another device (say a 16x2 LCD display) different or the same as using one 5V pin on the pi and splitting it to two pins on the LCD? For more ...
1
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0answers
65 views

Using LCD from tablet

I have a broken tablet with a good LCD screen. The LCD has a 40 pin socket, like this Original 10.1" LCD screen YDS101 WR02-16 YLMB-01490B-28W-A1 for the Mediatek k107. I can't understand, what is ...
0
votes
2answers
69 views

16x2 lcd display to raspberry pi black text instead of white [closed]

I just connected a lcd 16x2 display to the raspberry pi (directly, no breadboard). I can display text and send command to it without problem. The only problem is that the text is black while it should ...
0
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0answers
191 views

3,5" LCD display not work in raspberry pi

I have bought a 3,5" display from ebay, and I installed it onto my raspberry pi 3. I installed the LCDshow drivers, but when it restarts the display is white. I tried to start the gui, but it gives: ...
0
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1answer
61 views

Unable to show string on 2x16 LCD display

connected 2x16 LCD display to raspberry pi 3.I followed above tutorial https://www.rototron.info/lcd-display-tutorial-for-raspberry-pi/ I made connections as shown in the tutorial.Install adafruit ...
0
votes
1answer
39 views

Help in understanding how to use Raspberry Pi's “official” 7 in. LCD from Python script [closed]

Let's say I have a Python script that receives an IR signal and lights up an LED. We'll call it a "hit" indicator. In the IR transmission, let's say a person's name was embedded in the signal. How ...
2
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0answers
187 views

PI4J + Adafruit LCD with MCP23017

Got this device. Python example char_lcd_plate.py is working perfect. But I would like to manage it with Pi4J. I copied bits from python example LCD_PLATE_RS = 15 LCD_PLATE_RW ...
0
votes
1answer
367 views

qtdesign-UI using PyQt5 is not showing images on raspberry

My ui created in qtdesign is not showing the images on raspberry pi 3B+ with LCD-screen. I added them to the ui via the resource and in qtDesign5 they do show up. I have tried to add the image as ...
0
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0answers
193 views

Cheap 128x64 OLED

I purchased two cheap OLED modules, one is 0.96" 128x32 I2C at the following link: https://www.amazon.it/gp/product/B06XRBTBTB/ and the other is a 2.4" 128x64 at the following link: https://www....
3
votes
2answers
598 views

Upside down screen on Pi with Kumantech 3.5"

On a pi B with raspbian-stretch, I have tried every tip I could find to get the touch screen to rotate 180 degrees: commands in config.txt, new drivers, using ./LCD-show 180, and more. Nothing works ...
1
vote
1answer
252 views

Waveshare 4.3inch HDMI LCD shows blank white screen

I have a Raspberry Pi 3 model B running the latest version of Rasbian Stretch. Yesterday I've received my Waveshare 4,3 inch display. First thing I did was build it in my project, due to save height ...
0
votes
1answer
806 views

Pygame run on external screen using ssh

I have a raspberry pi with a lcd screen attached witch is mirroring the raspberry pi's display. I want to show a pygame window on it. When I run: python main1.py on the ripi terminal the pygame window ...
0
votes
1answer
99 views

TFT screen not working on Rpi A+

I have an old TFT LCD SPI screen, which I believe uses ILI9341 and would like to use it on my (old) RPi A+. Unfortunately, it just stays blank. I am not even sure it is working... My RPiA+ has a fresh ...
0
votes
2answers
299 views

LCD showing garbage sometimes using RPLCD

I am trying to use a 4x20 LCD display with RPLCD module. Its working. But if I run the program ten times every four or five times LCD shows these three garbage values(See below images). Here is my ...
0
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2answers
284 views

Can I use an Arduino LCD with my Raspberry Pi? [closed]

I have a 16x2 Arduino LCD and I want to make a bitcoin price tracker with it and my Raspberry Pi, can I do it?
0
votes
1answer
223 views

Python - 16X2 LCD display error loading driver without sudo

I'm using Pi Zero/ Pi ZeroW with StrechLite to display an output on a 16X2 LCD display. drivers was installed as instructed on PiGuy official site. while running a sample code after installing - an ...
0
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2answers
1k views

Potentiometer on 16x2 LCD, does it need to be connected to VCC?

I am following this Adafruit tutorial on 16x4 LCD, and I managed to make it work. https://learn.adafruit.com/drive-a-16x2-lcd-directly-with-a-raspberry-pi/wiring From this tutorial, the potentiometer ...
0
votes
1answer
48 views

Setting up Raspberry Pi 3 with 7" touchscreen

I recently purchased a 7" touchscreen LCD with a driver board and I'm trying to figure out how to get it hooked up to my Raspberry Pi 3. Here's the driver board and my Pi: My main questions are as ...
1
vote
1answer
409 views

Kuman 7 inch LCD screen not working

I'm new to all things pi and just got a Kuman 7" 800 480 LCD screen. I tested it on my laptop first (windows 8.1) and it looked great. Plugging it into the pi, not so great. The colours are all off, ...
1
vote
1answer
273 views

What's the proper method for connecting a parallel LCD display to an RPi 3?

I'm attempting to interface this display to a Raspberry Pi 3. The data sheet outlines a relatively simple parallel interface in which you can write to the display. For those familiar with the ...
1
vote
1answer
374 views

Adafruit Char LCD not working

I use a normal 2x16 LCD display and it already shows the black boxes along the upper row. But Adafruit_CharLCD is not working. I installed it with pip and I can import it into my Python script and use ...
0
votes
1answer
1k views

Connect old laptop LCD to RPi [duplicate]

I have an old laptop and I was wondering if I could take the LCD from it and use it with my RPi 3, the end goal is to make an RPi laptop complete with a 3D printed case, so would this LCD connection ...
2
votes
2answers
580 views

Pi to Arduino Serial Communication: Repeating character on LCD [closed]

I'm trying to send multiple characters (two digit numbers) from a Raspberry Pi 3 (Python 2.7.9) to an Arduino Uno via USB. The Arduino then prints these numbers to a 16x2 LCD panel. So far, I can ...
2
votes
2answers
829 views

Kuman 7 inch LCD touchscreen compatible with Raspberry Pi Zero?

Does anyone know if this Kuman 7" TFT LCD Capacitive Touch Screen is compatible with the Raspberry Pi Zero? On the website it says Raspberry Pi 3 2 Model B, RPi 1 B+ A but why wouldn't it work with ...
1
vote
0answers
411 views

Using LCD 400x240 with HDMI- LVDS Adapter

I'd like to get RPi working with my display on the car. The display's specs are here: https://file.io/w86H2M Internally it is 6-bit parallel LCD --> 18-bit resolution. The display housing has ...
3
votes
2answers
628 views

rPi3 I2C-LCD, do i need a logic level converter?

I have an I2C adapter for my LCD display i used with my Arduino. Both are 5V logic, and i know that the pi GPIO are 3.3 V. If i only need to "write" to the LCD, do i absolutely need a Logic level ...
3
votes
1answer
900 views

SPI vs 8-bit TFT

I read that 8-bit is faster than SPI, how much faster is 8-bit than SPI? Say, if I wanted to run a video loop of a wheel spinning, would the speed difference between SPI and 8-bit mode be obvious?
1
vote
0answers
131 views

Raspberry Pi Zero LCD + Headphone jack + Volume control

Is it possible to add an LCD screen, a headphone jack, and a Rotary Encoder (for volume control) to a Raspberry Pi Zero W? If so, how could I solder all this? Any useful links/tutorials are greatly ...
0
votes
0answers
416 views

LCD Screen on GPIO

I have recently purchased a small LCD screen to use with my Raspberry Pi, as shown below. I tried attaching it to 16 of the GPIO headers, connected to its 16 (usable) pins. I found this forum post, ...
1
vote
2answers
2k views

Displaying IP On LCD Display

I am trying to get my raspberry Pi to display it's IP to my LCD display. I need to execute this command 'hostname -I' using python in a python script I have almost successfully made , grab the result ...
1
vote
0answers
32 views

use 7inch raspberry pi lcd board for tv lcd

i have a board like this http://banlinhkien.vn/images/201701/goods_img/5375_P_1483585464340.jpgI also have an 30 pins lvds lcd tv panel(its main board is broken).So my plan is use that raspberry pi ...
0
votes
1answer
147 views

How can any cellphone LCD be used as a portable monitor? [duplicate]

In simple, I just want to build some thing like : CC TV with small monitor and small camera (the smaller the both, the better). . For example, I need it to connect a camera so I can watch real time ...
1
vote
1answer
976 views

How to check if 16x2 LCD is 5 volts or 3.3 volts?

I got a 16x2 LCD display but I have no clue if it's 5 volt or 3.3 volt logic. I'd like to use it on a Raspberry Pi but I'm afraid to just plug it into the 3.3 volts if the display is 5 volt. The ...