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https://github.com/carlosefr/pcd8544

Minimal footprint library for Philips PCD8544 LCDs on the Arduino.
https://github.com/carlosefr/pcd8544

arduino attiny driver lcd library

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Minimal footprint library for Philips PCD8544 LCDs on the Arduino.

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README 

        
What is it?

===========



**PCD8544** is a library for the [Arduino](http://arduino.cc/) to interface with LCDs based on the

Philips PCD8544 controller ([datasheet](https://github.com/carlosefr/pcd8544/blob/docs/docs/pcd8544.pdf?raw=true))

or compatibles. These displays are commonly found on older monochrome mobile phones, such as the

[Nokia 3310](http://en.wikipedia.org/wiki/Nokia_3310) or [5110](http://en.wikipedia.org/wiki/Nokia_5110),

so if you have one of these stuck in a drawer, take it out and start hacking away! :)



This library is meant to have a minimal memory footprint, small enough to be usable in an [ATtiny85](https://www.microchip.com/wwwproducts/en/ATtiny85) with enough room left for your code. If you need graphics and other features and can spare the resources, check out the [library](https://github.com/adafruit/Adafruit-PCD8544-Nokia-5110-LCD-library) from Adafruit.



![PCD8544.png](https://raw.githubusercontent.com/carlosefr/pcd8544/gh-pages/PCD8544.jpg)



Installation

============



Download the latest zip file from the [releases](https://github.com/carlosefr/pcd8544/releases) section. Then open it from the `Sketch > Include Library > Add .ZIP Library...` menu inside the Arduino IDE and a new "PCD8544" entry should appear in the `Sketch > Include Library` and `File > Examples` menus.



![Arduino IDE](https://raw.githubusercontent.com/carlosefr/pcd8544/gh-pages/screenshot-01.png)



How it Works

============



To use this library, you must first connect your LCD to the proper pins on the Arduino.

For a Nokia 3310 display the connections would be the following:



Display Pin       | Arduino Pin

------------------|------------

Pin 1             | +3.3V Pin

Pin 2 (SCLK)      | Digital Pin 3

Pin 3 (SDIN/MOSI) | Digital Pin 4

Pin 4 (D/C)       | Digital Pin 5

Pin 5 (SCE)       | Digital Pin 7

Pin 6             | Ground Pin

Pin 7             | 10uF capacitor to Ground Pin

Pin 8 (RST)       | Digital Pin 6



For this display model, "Pin 1" is the leftmost pin when facing the back of the display with the connector on top.



Nokia 5110 displays are slightly different. They have an external oscillator pin between pins 5 and 6 which should

be connected to +3.3V. I haven't used one of these myself, so please see the diagrams on

[this page](http://serdisplib.sourceforge.net/ser/pcd8544.html) for more details.



Since these LCDs are **3.3V** devices, you should add

[extra components](http://www.sparkfun.com/commerce/tutorial_info.php?tutorials_id=65) to

connect it to the digital pins of the Arduino (not necessary if you are using a 3.3V variant

of the Arduino, such as the [Arduino Pro](http://www.arduino.cc/en/Main/ArduinoBoardPro)). However, the I/O pins

are supposed to be 5V tolerant, so you can get by with 1K resistors in series with each pin if you like to live

dangerously.



Now, take a moment and read through the included [`HelloWorld.ino`](examples/HelloWorld/HelloWorld.ino) example.

It shows how to use the basic features of the library. There is also another

[`Thermometer.ino`](examples/Thermometer/Thermometer.ino) example that demonstrates bitmapped graphics and charts.



Custom Symbols

==============



The library allows the use of custom bitmap symbols (5x8), defined by an array of five bytes.

To make it easy to create custom symbols, there's a graphical glyph editor

[available online](http://carlosefr.github.io/pcd8544/).