Questions tagged [lcd]

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

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LCD external power and touch over same USB interface

I have the following 7inch HDMI LCD display: As you can see it has an HDMI and a micro usb connector. So far for pure rendering I have connected HDMI to my R-PI and micro USB via an adapter to 5V/GND ...
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1answer
59 views

how do I use an raspberry pi 3 A+ with 3.5 inch touch gpio display(MPI3501)(ILI9486 based) [duplicate]

I have a 3.5-inch display(MPI3501)(ILI9486 based) and a Raspberry Pi 3A+. The Datasheet- https://www.jameco.com/Jameco/Products/ProdDS/2278271.pdf Here are the specifications. The library link- github....
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i2c /IIC 20x04 lcd not displaying text

I have an 20x4 LCD and an i2c /IIC interface. If connected to the raspberry pi zero w, it looks the following: And from the back it looks like this: Interestingly, the power led of the icc/i2c ...
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51 views

Show boot info on character LCD

Is it possible to show boot log or info on a character LCD that the Raspberry Pi is still booting? I'm using a generic 16x2 character LCD
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1answer
39 views

How do I connect my 24 pin fpc to dip breakout board to my rpi zero w?

So I am working on a type of headset and I bought the adafruit 1.3 ips with 24 pin fpc connector and st7789 driver and I'm thinking of using a breakout board to do it. What I don't know is the pin out ...
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1answer
39 views

3.5" LCD driver conflicts with UART

I'm using RPi Zero W with 3.5" LCD driver ( here ). Everything works well except the UART. Linux console is disabled and UART is enabled. When video output is on HDMI port, I can send and receive ...
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I have Problem where the Ip Cam video is Lagging when RPi 3.5" inch (SPI) LCD is usedwith RPi 4

I have interfaced and IP camera with resolution 1280720 to Raspberry Pi 4 4GB and 3.5 " TFT LCD chinese version with xpt2046 controller (touch ..which is disabled)(resol 480320). I have ...
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2answers
77 views

I2C not detecting PCF8574 [closed]

What is the issue here? LCD has backpack. Connected following schematic to Pi: I2C is not detecting adress of PCF8574: Things I have already tried: Reinstalling I2Ctools, ensuring I2C is turned on ...
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1answer
39 views

Raspberry Pi DPI Colour issues

I have a DPI screen with an interface, I have setup DPI on the pi following this guide: https://www.raspberrypi.org/documentation/hardware/raspberrypi/dpi/README.md I am getting an image but the ...
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40 views

How to connect the LCD screen to the RaspBerry Pi 4B

Good morning, I have recently started my adventure with raspberry Pi, I am currently using raspberry pi 4B and I bought a DPI screen - LCD IPS 7 '' 1024x600px Waveshare 12885 and I do not know how to ...
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Use Sony LCD screen with Raspberry Pi

I have a Sony Bravia model KDL-43W800D. The motherboard has gone faulty and does not even startup. The TV is dead. Can I use the screen with an external video and power controller and connect it with ...
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2answers
46 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-...
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89 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&...
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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 ...
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1answer
98 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 ...
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58 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 ...
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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 ...
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1answer
54 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: ...
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34 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 ...
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38 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 ...
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77 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 ...
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38 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 ...
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1answer
60 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 ...
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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 ...
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1answer
155 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 ...
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25 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 ...
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1answer
42 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 ...
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41 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 ...
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1answer
183 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 ...
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2answers
536 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 ...
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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 ...
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1answer
72 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 ...
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1answer
71 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 ...
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2answers
542 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 ...
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73 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....
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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 ...
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1answer
322 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 ...
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169 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 ...
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1answer
79 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 ...
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71 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 ...
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1answer
42 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 ...
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1answer
60 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 ...
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1answer
82 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 ...
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1answer
103 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 ...
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1answer
63 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 ...
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0answers
433 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 ...
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0answers
53 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 ? ...
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1answer
198 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 ...
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26 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 ...
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41 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 ...