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Questions tagged [lcd]

LCD is an abbreviation for Liquid Crystal Display.

LCD is an abbreviation for Liquid Crystal Display. Liquid crystal is one of several technologies used in monitors today.

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Generating nanosecond delay in C on STM32

I am using STM32F2 controller and I am interfacing with an ST7036 LCD display via 8 bit parallel interface. The datasheet says there should be a 20 nano second delay between address hold and setup time. How do I generate a 20 nanosecond delay in C?
pranathi
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Using iPhone LCD with Arduino

Is it possible to use any LCD with Arduino or do I need to stick to some for which the libraries are available? I'm just starting out with Arduino and know nothing about interfacing LCDs with Arduino. I'm planing to buy an old iPhone LCD as they…
nik
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Javascript for preventing "burn-in" problem on lcd screen

I'm building a non-public web app that will be used as info-monitor. As such, it will be running 24/7 on one LCD TV display. Since this could produce a "burn-in color" error on the LCD I'm looking for a Javascript that will prevent/reduce this…
Spiro Krasic
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Arduino LCD not working

I am getting crazy on my first LCD example. I use an Arduino Uno and I'd like to try the LCD screen with the easiest example: the Hello World LiquidCrystal example. I connected the pins in the same way as the example above but the LCD first shows…
Rowandish
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Are CSS Variable changes possible upon a radio button's checked selector being triggered?

I have the following CodePen: Test LCD with CSS Variables, in which upon clicking labels with specific digits, results in the appropriate LCD segments to be "lit" based on algebraic equations I've determined to mimic a BCD to 7-Segment Display…
Eliseo D'Annunzio
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Change baudrate in pySerial while connected to device?

I'm trying to write a script for a LCD device called the uLCD32-pt and the issue is that you are required to connect to it with a baudrate of 9600 and in order to get a higher baud rate you have to connect to it, send a change baudrate command, then…
Xenland
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How do I dim the backlight on an 20x4 LCD Display with the i2c connected on an arduino uno

How to dim the backlight on an 20x4 LCD Display with the i2c connected to an Arduino uno? I use the LiquidCrystal_I2C.h library and I can turn on and of the light with lcd.backlight(); and lcd.noBacklight(); But I don't want to turn off completely…
Xasevu
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MQTT/Python Subscribe to multiple topics and write payloads on Raspberry LCD

I'm new on Python and also on MQTT. I was able to write some Python working code to publish connected sensors data to a broker, now I'd like to subscribe to more than one topic and write all the payloads on an LCD 20x4 connected to a raspberry.…
Marco
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Issue with itoa() and char array in regards to C (interfacing an LCD)

Doing my best to be brief; I am trying to program an LCD to print out an integer variable (of more than 1 digit). I'm trying to do this using the itoa function as the LCD takes ASCII characters. The below code compiles and prints "Set Temp: " when I…
James
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QLCDNumber numbers can't be centered

Why QLCDNumber numbers can't be centered when the number of digits is lower than the number of digits allowed in the parameters of QLCDNumber ? Can I bypass this ?
user4473281
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5 answers

How can I clear an LCD from my Arduino?

I'm using serial communication to display the the data to my 4x20 lcd display. When I filled up all the lines of course I need to clear it. I've search over the net and found something like: Serial.write(27); // ESC command Serial.print("[2J"); //…
NewInJava
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5.7" 640x480 LCD GUI Design Android

I want to develop an application specific to an Android device. The device has a 5.7" 640x480 LCD touchscreen. I'm using Eclipse for development environment. I'm trying to edit "activity_main.xml" to design a GUI. There are devices which can be…
MilesDyson
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Embedded linux framebuffer rotate

I have to integrate an LCD screen to my embedded linux (ARM9) system. The LCD is portrait 320x480 and I need to run the screen in landscape orientation 480x320. Using the LCD config register I can rotate it in hardware, so that (x,y)(0,0) is rotated…
user1937525
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What is JB used for here?

I'm trying to understand some example asm that came with a development board (XL400), with a view to converting it to C. The asm code is included below, unfortunately the documentation, such as it is, is translated very badly from Chinese, which…
Toby
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How can I get the real size of the (lcd) display diagonal, i.e. if a it is a 17 inch or 19 inch or other?

This is useful for me because I have to map objects with a correct dimension on screen; if I'm using a 19" lcd with 1280x1024 resolution and a normal 96dpi setting then in order to map a correct 1-inch square I have to write a xaml like…
Titianus
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