Data Firmware

AnyPixel js an open source software and hardware library to create big unusual interactive displays

AnyPixel.js is an open source software and hardware library created here at Google, making it possible to use the web to create big, unusual, interactive displays out of all kinds of things. Anyone can take the code and the schematics to create their own display at any scale or level of expertise.

The first display using this platform is in the 8th Avenue lobby at the Google NYC office. To create this installation, we used 5880 off-the-shelf arcade buttons as our pixels.


Learn more about the project and how to create your own AnyPixel.js display at https://goo.gl/anypixel

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esp8266 OLED esp8266 Arduino library for I2C OLED displays

esp8266-OLED is an esp8266-Arduino library for I2C-OLED displays. This post show how to download and install to Arduino IDE, and test with example.

- Its assumed you are programming NodeMCU on Arduino Software, with ESP8266 core for Arduino installed.

- Connect I2C OLED to NodeMCU.


OLED VCC - NodeMCU 3v3
OLED GND - NodeMCU GND
OLED SCL - NodeMCU D1
OLED SDA - NodeMCU D2

(reamrk: the Fritzing parts of can OLED_SSD1306_I2C_128x64 can be download HERE)


- Add esp8266-OLED library to Arduino Software:
visit https://github.com/klarsys/esp8266-OLED, follow the steps to install the library:

• Click on the Download ZIP button in the top right corner.
• Uncompress it.
• Rename the uncompressed folder to OLED.
• Check that the OLED folder contains OLED.cpp and OLED.h files.
• Place the OLED folder in your <arduinosketchfolder>/libraries/ folder - you may need to create the libraries subfolder if it is your first library.
• Restart the IDE.

Open the example,
File > Examples > ESP8266-OLED Display Library > example

In order to match with our connection, we have to modify it to correct SDA and SCL pins:
change the code:
OLED display(2, 14);

to
OLED display(4, 5);

where 4, 5 correspond to NodeMCU D2 and D1. Refer to the "The pin definition" in NodeMCU - ESP8266/CP2102.

// Example sketch for testing OLED display

// We need to include Wire.h for I2C communication
#include <Wire.h>
#include "OLED.h"

// Declare OLED display
// display(SDA, SCL);
// SDA and SCL are the GPIO pins of ESP8266 that are connected to respective pins of display.
OLED display(4, 5);

void setup() {
 Serial.begin(9600);
 Serial.println("OLED test!");

 // Initialize display
 display.begin();

 // Test message
 display.print("Hello World");
 delay(3*1000);

 // Test long message
 display.print("Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.");
 delay(3*1000);

 // Test display clear
 display.clear();
 delay(3*1000);

 // Test message postioning
 display.print("TOP-LEFT");
 display.print("4th row", 4);
 display.print("RIGHT-BOTTOM", 7, 4);
 delay(3*1000);

 // Test display OFF
 display.off();
 display.print("3rd row", 3, 8);
 delay(3*1000);

 // Test display ON
 display.on();
 delay(3*1000);
}

int r = 0, c = 0;

void loop() {
 r = r % 8;
 c = micros() % 6;

 if (r == 0)
 display.clear();

 display.print("Hello World", r++, c++);

 delay(500);
}

Result:

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Related:
- Another library of I2C OLED for ESP8266 core for Arduino - Adafruit SSD1306 library
- esp8266-oled-ssd1306 library

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