Questions tagged [lcd]

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

Filter by
Sorted by
Tagged with
0
votes
2answers
13 views

I2C Device Registered on CLI but not in Python

I have a JANSANE 16x2 1602 LCD I2C that i purchased and am trying to run on a raspberry pi 3 b+. Following this tutorial https://learn.adafruit.com/adafruit-16x2-character-lcd-plus-keypad-for-...
1
vote
0answers
76 views

Rpi ILI9341 2.8" 240 x 320 5110 SPI TFT LCD Screen Setup Problem

I ordered a cheap 2.8 inch ILI9341 screen from Amazon (https://www.amazon.co.uk/240x320-Screen-Serial-Module-ILI9341/dp/B07MXH92RL/ref=sr_1_12?dchild=1&keywords=spi+screen&qid=1589230039&...
0
votes
0answers
14 views

How can I put the official 7" touchscreen in portrait mode?

I've been told to put lcd_rotate=1 in the config.txt but that doesn't do anything. lcd_rotate=2 correctly flips the screen 180 degrees. And display_lcd_rotate=1 rotates the screen how I want but the ...
1
vote
1answer
83 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
42 views

I2C interface not detected

I have a Raspberry Pi 4B and I'm trying to hook it up with a 4x20 character LCD using a PCF8574T-based I2C interface. The interface operates at 5V so I'm also using a logic level converter. It would ...
0
votes
0answers
12 views

4.3inch-dsi-lcd jamming RPI4 wifi signal

I just bought RPI4 and 4.3 display (https://www.waveshare.com/4.3inch-dsi-lcd.htm). I attached display as required but wasn't able to get wifi connected. I noticed that sudo iwlist wlan0 scan shows ...
1
vote
2answers
689 views

Raspberry pi model b waveshare spotpear 3.2 inch lcd touchscreen is not working

I'm working on a Raspberry Pi portable system and I'm using a waveshare spotpear 3.2 inch TFT LCD touch screen; I have followed the instructions on that page. I get the screen to work but not the ...
1
vote
0answers
41 views

Is my PI broken or the LCD screen?

So I have an LCD screen which plugs into the pi. The pi works fine, but when I do the whole LCD-show in the terminal and it restarts it stops at either “starting login service” or “starting message ...
0
votes
1answer
56 views

NOVA USB touch panel is working with raspberry

I need to use one touch panel for my LCD monitor 32 inch, so i found this kind of NOVA USB touch panel : in the description it said it is working with Linux OS and working without needing to any ...
1
vote
1answer
49 views

How to use an lcd panel as keyboard?

I'm quite new to raspberry pi and custom Projects but I'd like to use an lcd touch panel like this (https://bit.ly/39HZpe4) as a keyboard for my raspberry pi 3 model b. I saw this in this video: ...
1
vote
0answers
33 views

Which are the SPI Interface Connection PINS on this LCD?

I've found an 480x480 rgb/spi interface screen, but I don't know which pins are used for SPI. There's some crazy CTP stuff and there are some I²C or SPI connection pins (SDA, SCL, Reset). But where ...
2
votes
0answers
31 views

Error in printing message to LCD via Raspberry Pi

from RPLCD import CharLCD lcd = CharLCD(cols=16, rows=2, pin_rs=37, pin_e=35, pins_data=[33, 31, 29, 23]) lcd.write_string('Hello world!') I've wired my raspberry pi and LCD exactly as the picture ...
0
votes
0answers
74 views

Trying to create a clock with an LCD

Today I bought an LCD and connected it to my Rasberry pi in order to make a clock and then an alarm. I have programmed the clock and when I run it there are no issues. The problem is that nothing is ...
0
votes
0answers
26 views

how can i connect a Non-invasive AC Current Sensor Split Core Transformer 100A or 30A to Raspberry-pi 4,

were you able to make it work ? I'm looking to display Current, voltage and Power through an LCD 16x2 screen using Raspberry Pi 4.I'm looking into what kind of current sensor i should use to measure ...
0
votes
1answer
40 views

4 inch LCD / touchscreen not working correctly

I have been trying to get a 4" LCD touchscreen (allegedly a waveshare 4inch HDMI LCD device, 800x480 + XPT2046 controller, but no branding, so who knows) working with a pi 3b to no avail. The problem ...
1
vote
1answer
88 views

Is it safe to power 5V display from 3.3V line from GPIO?

I want to use I2C 20x4 LCD with my Raspberry Pi. It works when powered from 5V line of GPIO, but works also when powered from 3.3V line. I know that this display in fact is designed to work powered ...
0
votes
0answers
38 views

Connect Raspberry Pi with Official Arduino TFT Screen

I've been owning for a few years now this useful LCD screen from Arduino https://www.arduino.cc/en/Guide/TFT and I wanted to ask if it was possible to connect it to the Raspberry Pi 2. The official ...
3
votes
2answers
4k views

Rpi3B/Rpi4B ILI9341 / XPT2046 SPI 2.8" Touch TFT LCD Connection / Driver Problem

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
483 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 ...
0
votes
1answer
60 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
0answers
20 views

128x64 LCD install to Pi Zero W

This is my first Rasp project, so please be understanding. I have Raspberry Pi Zero W and 128*64 dot china LCD. I do not have any program done for the screen yet. When start my Rasp only backlight ...
0
votes
1answer
73 views

Reporting undervoltage, accidental reverse voltage

I've got a raspberry pi 3b+ mounted in my wall with the official 7″ touchscreen, and after some time i noticed the symbol in the top right corner notifying that it does not get the voltage it's ...
1
vote
1answer
359 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 ...
1
vote
0answers
30 views

Need to display 2 LCDS at 800x480

Im using a Raspberry Pi 4 running the latest version of Raspbian. I need to run 2 separate 5" LCD displays at 800x480. This is the LCD I'm using: https://www.adafruit.com/product/1680, connected ...
2
votes
1answer
38 views

Need Help with Controlling Some LEDs with a Raspberry Pi

I'm mainly trying to follow this guide here in order to connect some LEDs to a Raspberry Pi. I've read other guides as well, but this link is where I got the majority of my setup done. I've never used ...
1
vote
1answer
746 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, ...
3
votes
2answers
296 views

Adjust display brightness to ambient light

Warning: I'm completely new to Raspberry Pi, and not even sure if it's the right solution here. I'm trying to make a better digital picture frame. Got almost all the way there by just buying a nice ...
1
vote
0answers
36 views

“Attribute Error”- How to display data from distance sensor on lcd display?

I am trying to incorporate LCD display features with the codes that are already written for the sensor. "lcddriver.py" is in "lcd". "distance.py" contains codes for my distance sensor. This is the ...
-1
votes
1answer
94 views

Distance sensor with 16x2 lcd display- ImportError: cannot import name lcddriver

Happy new year. I am working on a personal project which involves a distance sensor and a LCD display. The distance sensor's data should ideally be displayed on the 16x2 LCD display. The codes for the ...
0
votes
0answers
21 views

What's the acceptable device for Raspberry Pi's DSI port and camera port?

Raspberry Pi can connect to LCD screen through the on board DSI port. It a 15 pin port with little explanation. Can we control the pin of the DSI port and plug other 15 pin LCD screen? The video ...
0
votes
1answer
38 views

True console output to character LCD or similar?

Is it still possible to have text mode output to achieve real console output? That is, instead of using a virtual console, actually output characters directly to an character LCD screen? I'd like ...
3
votes
2answers
292 views

Raspberry pi 3 - black screen when connected to touch screen 5 inchLCD

I am trying to set display of raspberry pi model B+ to 5 inch touch screen. I have mounted SD card and changed config.txt file in /boot/config/firmware folder and added following entries. hdmi_safe=1 ...
1
vote
1answer
55 views

Display a value on a i2c 20x4 LCD with one decimal point

I am able to display pressure data from a BMP180 sensor in whole numbers but would like it to display to one decimal point. This is the code I am using. mylcd.lcd_display_string(“Pressure: %d%s ...
0
votes
0answers
60 views

Use a 2.5" LCD in a Blaupunkt Dashcam for Raspberry Pi?

and thank you for reading my topic. I recently bought a "2.5" LCD HD Dashcam" from the Blaupunkt brand (BPDV122), although I am aware they have just used this design from another company. https://www....
2
votes
1answer
210 views

Artillery [ ILI9341 ] 3.2" LCD Touch Screen White Display and Driver Problem

I bought this Artillery 3.2 Inch LCD Touch Screen Display Monitor: https://www.aliexpress.com/item/32553185633.html?spm=a2g0s.9042311.0.0.27424c4dFky0Ok But it only shows a white screen, so I ...
1
vote
1answer
3k 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 ...
0
votes
0answers
105 views

How to use KeDei 3.5 inch (480x320) as a custom application display

I successfully installed KeDei 3.5 inch 480x320 TFT LCD on a Raspberry Pi Zero with Raspbian Buster. It works nicely as text console, especially when I use lens to magnify the view. :-) However, I ...
1
vote
0answers
50 views

Why is 800x480 resolution so common?

The official Raspberry Pi LCD is 800x480, and there are many other popular displays that use that same resolution, at various sizes (ie Pimoroni Hyperpixel(Adafruit)). For example, I have a resistive ...
1
vote
1answer
41 views

intermittence in Adresses on a I2C bus when using more than 5

Hello im doing and experiment trying to Expand my raspberry to use 7 I2C devices (MCP23017 E/SP) its my first time using more than 1 MCP Im using SparkFun Solderable Breadboard to conect Pi 5v / GD ...
3
votes
2answers
2k 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 ...
0
votes
1answer
79 views

How can we allow OS to control backlight via a GPIO as PWM

I want to make OS control backlight, that is, use a slider in some DE like lxde or kde. How can I make kernel aware that, to control backlight only thing it needs to do is, produce a PWM signal with ...
-1
votes
1answer
58 views

Newcomer to RPi from web developing (HTML/CSS/Javascript). Do I have any advantages? [closed]

I'm looking to get in to the wonderful world of RPi. I can make a website with HTML/CSS/JavaScript/PHP so does that give me any kind of advantage over a true RPi newbie? For my first project I'd like ...
0
votes
1answer
57 views

How to login throught ssh to my raspberry with a lcd screen

So I just got a 3.5 inch lcd screen for my raspberry 3 b+. I connected it and installed the drivers and is working fine, but when it boots it prompts me with the ssh login (obviously, I just didnt ...
1
vote
0answers
342 views

Is There Support for 8-bit/4-bit parallel i/o bus (8080 or 6800) for LCD drivers?

I'm looking at using a 240x128 LCD with a UC1608 chip. Are there any packages that support parallel i/o with it? The UC1608 has support industry standard 3-wire, 4-wire serial bus (S9, S8, S8uc) and ...
1
vote
0answers
49 views

LCD NOKIA 5110 how to change only part of text/lines

I don't known if it's specially a raspberry oriented question, but it is related to my raspberry project then ... My question is in the title, how to refresh a certain part of the NOKIA 5110 screen ? ...
0
votes
0answers
21 views

stop code via systemd vs termination

i have an 16*2 char LCD connected to PI ,a C++ code is written to display "Date/Time" on LCD. when i execute the compiled code on terminal using sudo ./LCD it stats showing Time and when i terminate ...
1
vote
1answer
153 views

waveshare 7" LCD H : uses & reports wrong HDMI resolution

I recently got a Waveshare 7" LCD (H) with 3B+, running Raspbian updated to buster (uname -a says Linux rpi33 4.19.42-v7+ #1219 SMP Tue May 14 21:20:58 BST 2019 armv7l GNU/Linux) I set config.txt ...
0
votes
0answers
22 views

Which screen size in Pygame for an 3.5 inch LCD?

i try to fill out my whole LCD screen in Pygame with the best sharp resolution possible. So there is a difference between computer screen and the LCD. My LCD has resolution is 480×320. So choosing ...
0
votes
0answers
83 views

Raspberry Zero USB connection Lost and wasn't detected again in Linux OS As USB Devices

I was installing my LCD 5 Inch TFT files in my raspberry Zero which connected to my PC (Linux LMDE), and after a while i have a mistake pressed accidentally some keyboard bottoms and then with this ...
0
votes
0answers
34 views

LCD Installation freeze because of low voltage?

i try to install my LCD 3.5 waveshare, but when extracting the folder and use sudo ./LCD35-show it starts shortly and then freeze. I Got the thunder icon and the freezed screen. Might this be the ...