LCD stands for "Liquid Crystal Display" and is commonly known as a screen. They are found in all flat-screen monitors and televisions. They can make many colors and shapes, but are hard to control. (Note: LED displays still are LCDs with LEDs as a backlight.)
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1answer
34 views
Output to LCD is sometimes shifted to the side
I have an Arduino Uno connected to a LCD. When I try to write to it using the LCD library and the following sketch, it will keep shifting the output around, sometimes drastically.
The sketch:
...
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1answer
27 views
How would i capture and split serial data?
How would i capture the following serial data, and split it into parts?
<Alarm,MPos:0.000,0.000,0.000,WPos:0.000,0.000,0.000>
the parts i need from this is
Alarm - This is a state. i.e Alarm, ...
1
vote
1answer
40 views
Cheap LCD with Few Pins
I am working on a project with an Arduino Nano that includes a keypad, screen, and the NRF4001 transceiver. The keypad requires 7 digital pins to operate, the wireless transceiver uses pins D9 - D13 ...
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1answer
26 views
Arduino, lcd 16x2 and UTP cable shows gibberish text?
I'm using an arduino uno, and an 16x2 LCD that is connected to the arduino uno with a 1m long UTP cable to transmit data and as well power the LCD screen.
I used to test my code and my wiring with ...
0
votes
2answers
28 views
Split a string as 2x16 for lcd
How do I split a string into two based on it's length to display on a 2x16 lcd?
I have seen a function called length() to get the length of a string. But, any ideas how to split it in to 2x16 and ...
1
vote
1answer
25 views
Powering arduino and sensors and motor damaging 16x2 LCD?
I have an application that requires reading sensors and moving a stepper motor.
The sensors draw about 200mA between them, and need 5V to work. (Too much to draw through the Arduino, I thought) The ...
1
vote
1answer
50 views
Help with LCD's menu and seeing values continuously
I want to see the voltage data using void volt();, when I go to the "Item2SubItem3" within void menuChanged. Now I can only see the data at that time: how can I refresh the value every second?
void ...
2
votes
1answer
42 views
Arduino LCD Simple Problem
Hi my lcd doesnt display that i was expected. Can anyone help me???
RS-->22
RW-->GROUND
E-->23
D4-->24
D5-->25
D6-->26
D7-->27
#include <LiquidCrystal.h>
LiquidCrystal lcd(22, 23, 24, 25, ...
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votes
3answers
42 views
Solutions for displays?
I am trying to find cheap options for displays about 3 x 6 inches to display time, weather, simple clip-art type images, and other marquee messages. What are my best options to work with arduino if ...
0
votes
2answers
62 views
Delay workaround needed for RTC and LCD-shield buttons
Following configuration:
Arduino UNO R3
Real Time Clock DS1307RTC
LCD1602 Shield with buttons
Photo resistor
DHT11 (Temp & Humidity Sensor)
I need the function delay(1000) to display the ...
1
vote
1answer
17 views
LCD Display Flicker When Arduino Main Board Supply Voltage to GSM Shield Board
I have a 16x2 LCD display that is connected to an Arduino microcontroller.
It is working fine but the LCD display flickers when I connect the Vin and GND of the main board to its slave GSM Shield.
I ...
0
votes
1answer
49 views
Porting SH1106 Oled Driver - 128 x 64 / 128 x 32 Screen is garbled but partially responsive
I'm porting the SH1106 driver to netmf and have found several libraries that more or less accomplish the same thing. A few were much easier to understand and had less abstraction so I followed those.
...
0
votes
1answer
53 views
MCP23017: 16x2 LCD showing black boxes
I've researched a lot but I couldn't find a solution to my problem, which is that after properly following all steps from this Website: ...
2
votes
1answer
84 views
Printing SD card file contents on LCD
This is a part of my program which reads data from file stored in SD card and displays that on an LCD screen.
File dataFile = SD.open("1165.txt");
if (dataFile) {
Serial.println("File ...
0
votes
2answers
41 views
Can I connect TFT LCD screen to Arduino Leonardo same way as it's recommanded for Arduino Uno?
I want to connect the Arduino TFT LCD 1.77" screen to an Arduino Leonardo. Acording to this tutorial I should connect some pins on LCD screen to ICSP pins on Leonardo but I don't have equipment to do ...
-1
votes
2answers
64 views
coding problems
I'm working on a Arduino controlled solenoid motor project that I found on Instructables. I have been able to piece together what I think is most of the code but I'm getting some syntax errors and was ...
0
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2answers
46 views
How to interface with a mobile phone LCD?
I have a LG mobile phone LCD (model:KG 285). How could I interface with this LCD with an AVR microcontroller? Also, why are there articles on websites showing only interfacing of Nokia LCD?
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votes
1answer
33 views
Scroll lcd display connected to an Arduino UNO
I want to make some characters scroll left without affecting the first positions in each row of my LCD 16x2 screen. I have this code inside the loop so far:
lcd .clear();
lcd.setCursor(17, 0);
...
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0answers
15 views
Unable to determine why the LCD shield does not initialize
I have an Arduino UNO and a 16x2 LCD Shield that have been lying unused for one year, or perhaps more. Yesterday I connected the Arduino via USB, uploaded a couple of simple sketches, played around ...
0
votes
1answer
48 views
LCD-Display showing wrong numbers
Hy guys,
I am having an issue with my new LCD16x2 display. I connected a potentiometer and read the values. The values are properly read and send to Serial. I also display the values on the display. ...
0
votes
0answers
24 views
Servo + LCD + Ultrasound sensor works on USB, doesn't work on external 9V/1Amp
I have a basic Arduino ("Funduino") Mega circuit set up that moves one of those small blue microservos according to the distance an ultrasound sensor reports.
The distance is also shown on a ...
0
votes
2answers
97 views
LiquidCrystal_i2c and Pin 2
I'm trying to read temperature and humidity from a DHT11 sensor and write values to a 20x4 LCD.
I hit a behaviour I don't understand. When I use the DHT tester program that come with the DHT library, ...
1
vote
1answer
57 views
Adafruit_GFX setRotation not working when called from within a class
Using an ILI9341. I'm trying to set the rotation from within a class, but it's not working. The code is very straight forward.
If I rotate in the class, the setRotation code does not work but the ...
1
vote
0answers
47 views
Connecting LCD with ST7541 to the Arduino
I'm trying to talk with a LCD screen that has a ST7541 IC. I found glcd and similar libraries but none claim to support this model.
I know it can be done because I saw a picture of it in a forum, but ...
0
votes
1answer
61 views
Change code so motion sensor prints time instead of a button
I have the code below. At the moment there is a proximity sensor that makes a speaker play happy birthday when it is set off. I also have an LCD shield attached and when one of the buttons on LCD ...
0
votes
0answers
60 views
Merging two codes, one for speaker one for LCD clock (Arduino Uno)
I have two different codes. The first one makes a LCD screen count the time and print it, then when one of the buttons on the LCD shield itself is pressed, it prints the time on the top line that it ...
0
votes
1answer
57 views
How do I connect this SPI serial display to an Arduino?
I've recently purchased a screen on DX without really thinking about it, because I have no idea how to connect it to my Arduino.
It is this screen:
The description says that it uses the SPI serial ...
-1
votes
1answer
38 views
How to program LCD shield?
So I'm using the DFRobot LCD Keypad shield to make a text-based game. Can someone give me an example? Let's just say i want to make the LCD display "text1" and then press up then select, it displays ...
0
votes
1answer
44 views
Wiring DFRobot LCD shield
I need help wiring the DFRobot LCD keypad shield to my Arduino Uno. I plan on making a text-based adventure played on Arduino if that helps.
1
vote
2answers
64 views
How do I use two I2C LCDs with 4 pins?
I have two I2C LCD screens:
one with 2 lines
one with 4 lines.
Both have 4 pins each: GND, VCC, SDA, SDL. I connect SDA and SDL to A4 and A5 respectively, and I display text on each one of them ...
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0answers
159 views
iPhone 3g Screen with Arduino Uno
Probably a simple question, but my Googling has been fruitless so far, but would it be possible to use the LCD from an old iPhone 3g as a display in an Arduino Uno? I don't need the touch digitizer to ...
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0answers
20 views
arduino leonardo stops transmitting once hdmi cable is connected to a screen
I am using arduino leonardo for moving mouse pointer with head tracking using MPU6050. It works fine in general. But as soon as I connect an external lcd screen to my laptop via hdmi cable, it stops ...
2
votes
1answer
116 views
How do I scroll through the LCD vertically with joystick?
I have a device I'm working on and the only issue I'm running into is I can't manage to figure out how to get my LCD display to move around vertically with the joystick I have attached to it. I have a ...
0
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0answers
55 views
How do I connect a micro display to an Arduino?
I have a micro display that I bought for a project and to my knowledge there is no driver(?).
Would I need some component to be able to control the LCD?
Which would it be?
Specifications
Datasheet
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1answer
46 views
How can i use a TFT Screen shield along with other sensors and transmitters
I want to use Arduino as described in this instructable:
http://www.instructables.com/id/Uber-Home-Automation-w-Arduino-Pi/
But i thought i would give it a little twist by adding a TFT monitor to ...
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0answers
29 views
Arduino Robot - LCD display blank
I'm currently playing around with an Arduino Robot, and can't seem to get the LCD display it came with to work.
I am using code that I found here
I did, however, have to get rid of the 4th parameter ...
2
votes
6answers
568 views
Program Arduino Uno as a digital clock
I have an arduino Uno board with a screen attached on top (http://www.freetronics.com.au/pages/16x2-lcd-shield-quickstart-guide#.VUf0tMWN0iT This is the screen).
I'm trying to get it so that the ...
0
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0answers
152 views
Arduino LCD 2x16 and PCF8574AP works well for limited time
I have got a problem with operating my typical 2x16 LCD with PCF8574AP. I have read the entire internet about that, other topics etc. but none of them can relate to my problem. The thing is that my ...
0
votes
0answers
105 views
Can't get LCD(1602A v2) to communicate with AVR ATMEGA2560
I have written the following code to communicate with an LCD display yet I can not get data to appear on the screen. All I get is white boxes on the display. I am properly controlling the RW, RS and ...
0
votes
1answer
73 views
LCD Display hangs the computer
I'm trying to connect 16x2 LCD screen to clone Arduino UNO via PF8574T backpack. 4 cables are connected to +5V, GND, SDA and SDL pins.
When I tried this I2C scanner code from arduino.cc. It returned ...
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3answers
98 views
need help for saving the millis function when arduino was rebooted
I have two questions want to ask
I'm using Arduino Uno with 16*2 LCD Blue ( also I have temp. sensor and two motors also 3 limit switches) ,, my code is working good, but sometimes my lcd stop ...
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votes
0answers
68 views
Arduino 16x2 LCD Black Boxes
I hooked up a 16x2 arduino compatible LCD yesterday and made sure all the connections were according to the program and the schematics provided all over the web. My contrast is adjusted perfectly but ...
0
votes
1answer
84 views
How To Make LCD Shield Button Code Work with Pot
I am trying to convert this code into something useable with a potentiometer and push button because I don't have a lcd shield and dont feel like wiring that many buttons. I want the pot to have ...
0
votes
1answer
44 views
Converting Arduino LCD Programs to Serial I2C LCD code
I just got a Serial LCD and wanted to test it out with a game. I found this site with game conversions and wanted to use this game. However since my serial LCD use the LiquidCrystalic2 library the ...
1
vote
2answers
301 views
Operating Sharp memory LCD with Arduino
I am trying to write to Sharp memory LCD "LS027B7DH01" which isn't going well for me. I didn't find any useful information for beginners. I just want to display any character on the LCD. Here's my ...
1
vote
1answer
159 views
Arduino Uno - combined LCD and keypad interfacing problem
I have a problem with the Arduino Uno.
I need to use a 4x3 keypad and 16x2 LCD together with an Arduino Uno. As 4x3 keypad requires 7 pins, I have defined pins 2, 3, 4, 5, 6, 7 and 8 to it. A 16x2 ...
1
vote
1answer
321 views
How can I drive this LCD TFT with an Arduino?
As I understand it, the Arduino comes with a TFT library which uses SPI to drive LCD TFTs. I recently bought a TFT labelled "HY-32.TFT" on the front and "HY-TFT320_262k heyaodz111211" on the back.
It ...
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votes
0answers
44 views
Flickering LCD when using > 5v power supply on a Pro Mini
I have a Pro Mini wired up to an LCD via an I2C board. At http://www.arduino.cc/en/Main/ArduinoBoardProMini it says the pro mini can accept up to 12v on the RAW pin as it has a voltage regulator on ...
1
vote
1answer
194 views
Use object of other class within class
I am writing a class for a project which will take care of handling any LCD updates for my project. The way I want to handle this is to initialize the LCD object in my main file, and then pass the LCD ...
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1answer
52 views
Powering LCD Displays without a Breadboard
I hope that this is not a silly question. I may be hoplelessly optimistic in asking, but is there any way to power & display information onto a LCD Display from an Arduino Uno.... Without the ...
