Questions tagged [display]

A visual output device typically capable of displaying text and/or graphics. Can include various technologies, such as LCD, OLED, and TFT.

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35 views

Need to turn on project twice in order for screen to work!

This problem is really stumping me. I made a simple printed circuit board with an ATtiny85, a 128x64 I2C OLED display, and a Sharp IR analog distance sensor. You can view the circuit here: circuits.io....
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Cannot move TM1637 from Uno to Pro Mini

I have a very simple setup which works fine with an Uno. #include <SevenSegmentTM1637.h> #include <SevenSegmentExtended.h> const byte PIN_CLK = 2; const byte PIN_DIO = 3; ...
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1answer
357 views

Where can I get high-quality LCD's for projects [closed]

So I've recently started learning about LCD communication with arduino but I have one question: Devices like PC's and smartphones use very high quality LCD's and if I wanted to use one (not ...
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2answers
953 views

Need help with 2X3 matrix for braille

I'm an intermediate Arduino progammer, and I'm making an electronic braille display for my friend. You can think of this display as an array of 28x3 LEDs(one braille character contains a maximum of ...
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1answer
2k views

7-segment display code

What is the meaning of BitSet = bitRead(numeral[number], segment);? const byte numeral[10] = { //ABCDEFG /dp B11111100, // 0 B01100000, // 1 B11011010, // 2 B11110010, // 3 B01100110, ...
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980 views

Controlling a capacitive touch screen that doesn't have I2C/SPI

I have been searching for cheap slim 3" 16:9 capacitive touch screens for a while now. But I couldn't find any that had an I2C or SPI interface. The cheap displays always have these ribbon cables with ...
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1answer
65 views

How do you change the state of an image on a TFT display when the associated pin changes state?

I just recently resolved my problem on getting images to load on to my TFT display via the SD card. Thanks to UTFT_SdRaw!!! it's by far the easiest to use. For a novice like me, its been a real feat. ...
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1answer
81 views

Is Sparkfun's MicroView OLED Arduino module a shield?

I'm getting confused by the Arduino terminologies: shield, breakout, module. Is this MicroView an Arduino compatible shield that will plug into Arduino's or Adafruit's Uno?
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2answers
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Making two points on a tm1637 display blink [ Solved ]

Hello! In my project, using a display controlled by a TM1637, I want to make the two points on the middle of the screen blink (as every clock does). The following example, provided by the library I'm ...
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1answer
1k views

Using two digits to display a number using TM1637 and a 4-digit display

I decided to build a digital clock using a 4-Digit Display (TM1637) from Grove. For that, I have been using the DigitalTube library by Grove for the TM1637 controller. My idea is to use the two ...
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2answers
892 views

Driving single-character alphanumeric (16-segment) displays

I would like to drive three sixteen-segment displays (https://www.sparkfun.com/products/retired/9934) using an Arduino Micro. These displays would output an alphabetic character that a user would ...
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1answer
101 views

Code runs different on USB vs Battery

I have two Arduino, one is to handle the Bluetooth communication and send a signal to the other Arduino, and the other to interpret the signal and display or hide an image on the E-ink display. It ...
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3answers
52 views

LCD readout is odd

I want it to display the current temperature in the middle of the screen, fade out for two seconds, display new temperature, rinse repeat. This is current (see images)]2 /* * File: ...
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Why doesn't my 7 segment update every second like in the program?

I used sevseg.h library to write numbers to my 4 digit seven segment. The display should update every second with the current time since program started running. This is my code so far: #include <...
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How to use a common anode 7-segment, 4-digit display?

Please take this question as an example to (my own) answer below. I've got an 7 segment, 4 digit LED display, but I don't have any idea on how to wire it. I don't understand the difference between ...
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3answers
539 views

ILI9163C screen not working properly

I've just tried out my new TFT_ILI9163C display with TFT_ILI9163C library but I'm having an issue with it. The graphics has moved down (the "hello world" should be in the top left) and the leftover ...
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616 views

Serial Monitor not displaying anything

I have a very basic script that is supposed to display something to the serial monitor but no matter what I try the serial monitor won't display anything...I;ve watched about 5 tutorials now and each ...
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1answer
193 views

RePaper 2.7" eInk Display with Arduino Due

I got a RePaper 2.7' eInk display that unfortunately doesn't support Arduino Mega because of its limited SRAM capacity (8k bytes). I am porting the library to Arduino Due because of its sufficient RAM ...
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71 views

Looking for hardware - 3.5" TFT with capacitive touch

I'm looking for a 3.5" display (480x320) with a capacitive touch attached. Anyone have some experiences? I want to drive the display with 8bit. If there are existing libraries that would be highly ...
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1answer
474 views

How to display information from a web API on an LCD (2x16) in real time?

How can I display information from a web API on an LCD (2x16)? This is an example of the data returned by the API for train times. The information that I want to display on the LCD is time ...
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1answer
144 views

How to drive a 4bit GLCD?

i've got a huge (about 6 x 23 cm) graphics LCD. I used my multimeter and the datasheet the LCD driver chips (6 x KS0104 and 2 x KS0103) to get the pinout. It has the following pins: GND, M, FCS (not ...
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2answers
482 views

Using more than 8 digits using the sevseg library

I am using sevseg and i can't get more than 8 digits to work. I really need 15. Does somebody know what I can do to get this? Shown is the original example This is using Gabriel Staples example in ...
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2answers
65 views

Connect Digital monitor to Arduino?

I need a small display with ~ 5 digits. The display needs to show number of visits to my site in real-time. (Every time someone visits it needs to increase by one). I thought to create an app, that ...
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2answers
30k views

How to display variables on 0.96" OLED with u8glib library?

I have Arduino Uno and 0.96" I2C Oled 4 Pinned display. These are my Arduino codes: #include "U8glib.h" U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_NONE); // VDD=5V SCL=A5 SDA=A4 int a = 10; void ...
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1answer
2k views

Execute Code While Refreshing a 7 Segment LED Display

I'm using the following library to drive a 4 digit, 7 segment LED display: http://playground.arduino.cc/Main/SevenSegmentLibrary The display is showing the temperature which it gets from a DS18B20 ...
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1answer
3k views

4 Digit, 7 Segment Display Wiring (14 pin)

I purchased this 4 digit, 7 segment display from Adafruit: Product: http://www.adafruit.com/products/865 Data Sheet: http://www.adafruit.com/datasheets/865datasheet.pdf Everything I have searched ...
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2answers
169 views

Looking for a game application oriented display for Arduino Mega

I was using displays with serial communication (SPI), but sending bytes to draw a tile-based picture was way too slow so I'd like find one with a parallel port, enough fast bandwidth to receive fast ...
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1answer
220 views

Are there any ePaper modules that are bigger than 2.7 inches for arduino

I am looking for a large ePaper Display for the Arduino. The issue is is that I cannot seem to find one any larger than 4.5 inches in size. That will be compatible with arduino. Even with a controller ...
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2answers
154 views

Can we connect 4 4-digit 7 segment LED Displays to a single Arduino board?

Can we connect 4 4-digit 7 segment LED Displays to a single Arduino board ? Is it possible without another component in between ?
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0answers
134 views

Display unresponsive in one sketch, while working in another

I'm using a DOGM163 Display. It works in a DEMO sketch provided by the manufacturer but not in my sketch. This is strange, because I am using the same library specific commands as in the example. I ...
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2answers
7k views

10k ohm Potentiometer vs 10k ohm Resistor on LCD Display

I'm trying to use a LCD Display with my Arduino, but I don't have a potentiometer and all of the guides I find always require one, usually a 10k ohm potentiometer. The point is that I'm not very good ...
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1answer
2k views

problem with using String()

I'm new to arduino and currently trying to build a small program with multiple screens and buttons and a counter. when I try to convert a int to a chararray it messes up the world. with out it what I ...
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1answer
1k views

Arduino Pro Mini and GDEW0154T1 ePaper (e ink) display

I just got my Arduino Pro Mini and GDEW0154T1 ePaper display (GDEW0154T1 display) and I'm trying to figure out a way to make them "talk". I started reading documentation and multiple sites but I still ...
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4answers
14k views

How to wire up 4-digit 7-segment display?

I have an Arduino Mega and the CL5642BH, a 4-digit 7-segment display. I found very helpful code here, but I don't understand how to wire it up on the breadboard. The display has 12 pins: 6 on the top ...
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0answers
5k views

Making CS (chip select) work in SPI (for and SD card and OLED)

I'm working on a project that will log data to an SD card and display a user interface on an OLED. The SparkFun OLED breakout was super easy to set up. I was also able to get the SD-Card library ...
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3answers
96 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 ...
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1answer
300 views

How do I use an Arduino as a USB output device for a 2x16 display?

Can I make a USB 2x16 display using an Arduino? I want to control a 2x16 character lcd display using USB, not com port/serial. I need it to appear as a HID device when connected to the computer. ...
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3answers
276 views

One free pin. Need to display output for the user?

I'm working with lightblue bean. I have a device that writes data to an SD card on a long button press and switches what will be written (from a list of 5 items) on short button press. The output, ...
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2answers
262 views

Arduino UNO with CD4510 Counter

I am new in Arduino but I have experience in electronics. I was wondering how can I make a countdown timer using a CD4510 and an Arduino UNO. I know you would suggest that I should connect my seven ...
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1answer
4k 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. ...
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1answer
105 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 ...
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2answers
726 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 ...
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0answers
1k views

iPhone 3g Screen with Arduino Uno [closed]

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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1answer
5k views

How to draw a bitmap on a tft display?

I'd like to print a bitmap on my TFT. I setup my screen with this library: http://forum.arduino.cc/index.php?topic=292777.0 It is like the Adafruit_GFX library (only a little bit changed). ...
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3answers
681 views

HIGH and LOW reversed

i've got a seven-segment-display on my arduino-nano and want to write some numbers on it. The problem is that HIGH and LOW seems to be reversed. If the output should be 0 it displays - I could ...
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0answers
192 views

How do I connect a micro display to an Arduino? [closed]

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
1k views

2 digit number to 2x 1 digit

Suppose I have a number with 2 digits, 42. It is an integer, received from my RTC Now for my 7 segment displays, I will need 2 seperate numbers, 4 on display 1. 2 on display 2. How do I slice this ...
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2answers
180 views

Shift registers. What, how and why?

I'm making a project and I'm using multiple 1 digit 7 segment displays. I haven't plugged them all on my arduino because currently I'm just testing. The problem is on the I/O ports. Obviously I need ...
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3answers
1k views

Pixel font resources in byte format

To write text on a dot-matrix or LC display with an Arduino you need to have a pixel font in byte format (i.e. typically 1 bit = 1 pixel). On the Internet I have found surprisingly few resources for ...
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1answer
2k views

7 segment LEDs on wood face

I'm not sure this is right place for this question, but does anyone have any idea how a 7 segment display is projected or embedded in wood for products like this? Full product info at http://www....