How to connect and use a Nokia 5110 LCD with an Arduino

OVERVIEW

There are many tutorials out there that show how to connect and use a Nokia 5110 LCD display with an Arduino.

In this tutorial we will look at an easy way to control the 5110 by using the u8glib library.

If you want to display text / graphics and have more control of the 5110, the u8glib is great, but it does takes more memory, and is a little more complicated to use, but if you want to have more options, using the u8glib library is the way to go.

PARTS USED

DHT-11 Temperature sensor

Arduino UNO

Nokia 5110 Module

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CONNECTIONS

The Nokia 5110 LCD uses 3.3V so we need to make sure that we connect it too the 3.3v on the Arduino not 5V.

A lot of tutorials out there say to not use the 5V logic voltage with these displays, as it may shorten the display’s lifespan.

This might be true with older versions of those displays, but in our experience we never had any problem using the digital pins of the Arduino as-is.

As you can see in the schematic above, the pins of the UNO are directly connected to the display making it very easy to connect.

THE CODE

The sketch is using the u8glib library to display the graphic and the DHT11 sensors information.

As always, please check out the tutorial video to have more information.

#include "U8glib.h"
#include "dht.h"

#define dht_apin A1
#define backlight_pin 11

dht DHT;

U8GLIB_PCD8544 u8g(8, 4, 7, 5, 6);  // CLK=8, DIN=4, CE=7, DC=5, RST=6

const uint8_t brainy_bitmap[] PROGMEM = {
 0x00, 0x00, 0x03, 0xB0, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x46,
0x00, 0x00, 0x00, 0x00, 0xFC, 0x47, 0xC0, 0x00, 0x00, 0x01, 0xCE, 0x4C, 0x60, 0x00, 0x00, 0x03,
0x02, 0x58, 0x30, 0x00, 0x00, 0x03, 0x02, 0x58, 0x10, 0x00, 0x00, 0x02, 0x02, 0x58, 0x18, 0x00,
0x00, 0x03, 0x06, 0x4C, 0x18, 0x00, 0x00, 0x07, 0x04, 0x44, 0x18, 0x00, 0x00, 0x0D, 0x80, 0x40,
0x3C, 0x00, 0x00, 0x09, 0xC0, 0x40, 0xE6, 0x00, 0x00, 0x18, 0x78, 0x47, 0xC2, 0x00, 0x00, 0x18,
0x0C, 0x4E, 0x02, 0x00, 0x00, 0x1F, 0x86, 0x4C, 0x7E, 0x00, 0x00, 0x0E, 0xC6, 0xE8, 0xEE, 0x00,
0x00, 0x18, 0x43, 0xF8, 0x82, 0x00, 0x00, 0x10, 0x06, 0x4C, 0x03, 0x00, 0x00, 0x30, 0x0C, 0x46,
0x01, 0x00, 0x00, 0x30, 0x18, 0x46, 0x01, 0x00, 0x00, 0x10, 0x18, 0x43, 0x03, 0x00, 0x00, 0x18,
0x10, 0x43, 0x03, 0x00, 0x00, 0x1C, 0x70, 0x41, 0x86, 0x00, 0x00, 0x0F, 0xE0, 0x40, 0xFE, 0x00,
0x00, 0x09, 0x1E, 0x4F, 0x06, 0x00, 0x00, 0x08, 0x30, 0x43, 0x86, 0x00, 0x00, 0x0C, 0x20, 0x41,
0x86, 0x00, 0x00, 0x06, 0x60, 0x40, 0x8C, 0x00, 0x00, 0x07, 0x60, 0x40, 0xB8, 0x00, 0x00, 0x01,
0xE0, 0x41, 0xF0, 0x00, 0x00, 0x00, 0x38, 0xE3, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xBE, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xCF, 0x82, 0x0C, 0x86, 0x46, 0x1F, 0xEF, 0xC3, 0x0C,
0xC6, 0xEE, 0x1C, 0xEC, 0xC7, 0x0C, 0xE6, 0x7C, 0x1C, 0xED, 0x8D, 0x8C, 0xFE, 0x38, 0x1C, 0xED,
0x8D, 0xCC, 0xDE, 0x38, 0x1D, 0xCD, 0xDF, 0xCC, 0xCE, 0x38, 0x1F, 0x8C, 0xF8, 0xEC, 0xC6, 0x38,
0x1F, 0xEC, 0x08, 0x0C, 0xC2, 0x18, 0x1C, 0xEC, 0x00, 0xC0, 0x00, 0x00, 0x1C, 0xFD, 0xFB, 0xC0,
0x00, 0x00, 0x1C, 0xFC, 0x63, 0x00, 0x00, 0x00, 0x1C, 0xEC, 0x63, 0xC0, 0x00, 0x00, 0x1F, 0xEC,
0x60, 0xC0, 0x00, 0x00, 0x1F, 0xCC, 0x63, 0xC0, 0x00, 0x00, 0x1F, 0x0C, 0x63, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x28, 0x2B, 0x4F, 0x67,
0x42, 0x38, 0x7B, 0xEA, 0x86, 0xB2, 0x28, 0xC7, 

};

void draw(void) {
  u8g.drawBitmapP( 37, 0, 6, 50, brainy_bitmap);  // put bitmap
  u8g.setFont(u8g_font_profont11);  // select font
  u8g.drawStr(0, 15, "T: ");  // put string of display at position X, Y
  u8g.drawStr(0, 35, "H: ");
  u8g.setPrintPos(15, 15);  // set position
  u8g.print(DHT.temperature, 0);  // display temperature from DHT11
  u8g.drawStr(30, 15, "c ");
  u8g.setPrintPos(15, 35);
  u8g.print(DHT.humidity, 0);  // display humidity from DHT11
  u8g.drawStr(30, 35, "% ");
}

void setup(void) {
  analogWrite(backlight_pin, 50);  /* Set the Backlight intensity */
}

void loop(void) {
  DHT.read11(dht_apin);  // Read apin on DHT11

  u8g.firstPage();  
  do {
    draw();
  } while( u8g.nextPage() );
  
  delay(5000);  // Delay of 5sec before accessing DHT11 (min - 2sec)
}