Questions tagged [lcd]

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

Filter by
Sorted by
Tagged with
1
vote
0answers
18 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 ...
-1
votes
0answers
14 views

How to control an Arduino, LCD, and MPU 6050 with Raspberry Pi

Im working on a homework assignment where our professor has asked us to do the following, MPU6050 + LCD: Write a Python program to read the accelerometer and gyroscope readings from the MPU6050 and ...
0
votes
0answers
72 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
22 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
29 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 ...
0
votes
0answers
26 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 ...
1
vote
1answer
51 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 ...
1
vote
0answers
19 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 ...
2
votes
1answer
35 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
0answers
34 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
66 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 ...
3
votes
2answers
173 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 ...
0
votes
0answers
18 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
28 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 ...
1
vote
1answer
50 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 ...
3
votes
2answers
177 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 ...
0
votes
0answers
54 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....
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
158 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 ...
0
votes
0answers
72 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 ...
0
votes
1answer
63 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
0answers
43 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
40 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 ...
-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
45 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 ...
0
votes
1answer
60 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 ...
0
votes
1answer
45 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
0answers
299 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
44 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
133 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
21 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
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 ...
1
vote
0answers
136 views

SPI Display – fbtft connects to wrong frame buffer

Today I installed an SPI display to my pi. I'm using fbtft and follow the wiki. I don't want screen mirroring, but force the SPI display to be a secondary monitor. I discovered, that fbtft connects ...
1
vote
0answers
50 views

Raspberry Zero USB connection Lost and don'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
74 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 ...
2
votes
2answers
117 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
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
577 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
1k 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
68 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
296 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
281 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
votes
0answers
195 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
votes
0answers
95 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
votes
0answers
54 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, ...
1
vote
1answer
2k 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
415 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
261 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
votes
0answers
278 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 ...