Difference between revisions of "LCD1602 Module"

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==Introduction==
 
==Introduction==
LCD1602, or 1602 character-type liquid crystal display, is a kind of dot matrix module to show letters, numbers, and characters and so on. It's composed of 5x7 or 5x11 dot matrix positions; each position can display one character. There's a dot pitch between two characters and a space between lines, thus separating characters and lines. The number 1602 means on the display, 2 rows can be showed and 16 characters in each.<br>
+
 
 +
[[File:lcd1602-1.jpg]]<br>
 +
 
 +
LCD1602, or 1602 character-type liquid crystal display, is a kind of dot matrix module to show letters, numbers, and characters and so on. It's composed of 5x7 or 5x11 dot matrix positions; each position can display one character. There's a dot pitch between two characters and a space between lines, thus separating characters and lines. The model 1602 means it displays 2 lines of 16 characters.<br>
 
Generally, LCD1602 has parallel ports, that is, it would control several pins at the same time. LCD1602 can be categorized into eight-port and four-port connections. If the eight-port connection is used, then all the digital ports of the SunFounder Uno board are almost completely occupied. If you want to connect more sensors, there will be no ports available. Therefore, the four-port connection is used here for better application.<br>
 
Generally, LCD1602 has parallel ports, that is, it would control several pins at the same time. LCD1602 can be categorized into eight-port and four-port connections. If the eight-port connection is used, then all the digital ports of the SunFounder Uno board are almost completely occupied. If you want to connect more sensors, there will be no ports available. Therefore, the four-port connection is used here for better application.<br>
  
[[File:1-1.jpg]]<br>
+
==Pins Functions==
  
===Pins of LCD1602 and their functions===
+
[[File:lcd1602-2.jpg]]<br>
VSS: connected to ground<br>
+
 
VDD: connected to a +5V power supply<br>
+
==The Experiment for Arduino==
VO: to adjust the contrast<br>
+
 
RS: A register select pin that controls where in the LCD’s memory you are writing data to. You can select either the data register, which holds what goes on the screen, or an instruction register, which is where the LCD’s controller looks for instructions on what to do next.<br>
+
'''<font color="green">Components</font><br>
R/W: A Read/Write pin to select between reading and writing mode<br>
+
- 1 * SunFounder Uno Board<br>
E: An enabling pin that reads the information when High level (1) is received. The instructions are run when the signal changes from High level to Low level. <br>
+
D0-D7: to read and write data<br>
+
A and K: Pins that control the LCD backlight. Connect K to GND and A to 3.3v. Open the backlight and you will see clear characters in a comparatively dark environment. <br>
+
==Components==
+
- 1 * SunFounder Uno board<br>
+
 
- 1 * Breadboard<br>
 
- 1 * Breadboard<br>
 
- 1 * LCD1602<br>
 
- 1 * LCD1602<br>
 
- 1 * Potentiometer (50kΩ)<br>
 
- 1 * Potentiometer (50kΩ)<br>
- 1 * USB cable<br>
+
- 1 * USB Cable<br>
- Jumper wires<br>
+
- Several Jumper Wires<br>
==Experimental Principle==
+
 
Connect K to GND and A to 3.3 V, and then the backlight of the LCD1602 will be turned on. Connect VSS to GND and the LCD1602 to the power source. Connect VO to the middle pin of the potentiometer – with it you can adjust the contrast of the screen display. Connect RS to D4 and R/W pin to GND, which means then you can write characters to the LCD1602. Connect E to pin6 and the characters displayed on the LCD1602 are controlled by D4-D7. For programming, it is optimized by calling function libraries.<br>
+
 
==Experimental Procedures==
+
'''<font color="green">Experimental Procedures</font><br>
''<font color="red">Note:</font> before connecting circuit, need to welding on the LCD1602 row needle first, solder iron temperature is higher, please be careful when welding.''<br>
+
<font color="red">Note: Before connecting circuit, need to plug the pin headers onto a breadboard, and then put the LCD1602 on to it for easy soldering.</font><br>
 +
 
 +
[[File:lcd1602-3-3.jpg]]<br>
 +
 
 +
'''Step 1:''' Build the circuit (make sure the pins are connected correctly. Otherwise, characters will not be displayed properly):<br>
 +
 
 +
[[File:Lcd1602-4.jpg.png]]<br>
 +
 
 +
'''Step 2:''' Download the package [http://wiki.sunfounder.cc/images/b/b2/LCD1602_for_Arduino.rar  LCD1602_for_Arduino], then unzip it and open the LCD1602.ino file<br>
 +
 
 +
[[File:Lcd1602-5.jpg.png]]<br>
 +
 
 +
'''Step 3:''' Select correct Board and Port<br>
 +
'''Step 4:''' Upload the sketch to the SunFounder Uno board<br>
 +
 
 +
 
 +
'''<font color="green">Experimental Phenomenon</font><br>
 +
<font color="red">Note: You may need to adjust the potentiometer on the LCD1602 until it can display clearly.</font><br>
 +
You should now see the characters "SunFounder" and "hello, world! " rolling on the LCD.<br>
 +
 
 +
[[File:lcd1602-6.jpg]]<br>
 +
 
 +
==The Experiment for Raspberry Pi==
 +
 
 +
'''<font color="green">Components</font><br>
 +
- 1 * Raspberry Pi<br>
 +
- 1 * Breadboard<br>
 +
- 1 * LCD1602<br>
 +
- 1 * Potentiometer<br>
 +
- Several Jumper Wires<br>
 +
 
 +
 
 +
'''<font color="green">Experimental Procedures</font><br>
 +
'''Step 1:''' Build the circuit (please be sure the pins are connected correctly. Otherwise, characters will not be displayed properly):<br>
 +
 
 +
{| border="1" class="wikitable"
 +
|-
 +
! scope="col" | LCD1602/2004
 +
! scope="col" | SunFounder Uno board
 +
|-
 +
|align="center"|K
 +
|align="center"|GND
 +
|-
 +
|align="center"|A
 +
|align="center"|3.3V
 +
|-
 +
|align="center"|D7
 +
|align="center"|GPIO18
 +
|-
 +
|align="center"|D6
 +
|align="center"|GPIO23
 +
|-
 +
|align="center"|D5
 +
|align="center"|GPIO24
 +
|-
 +
|align="center"|D4  
 +
|align="center"|GPIO25
 +
|-
 +
|align="center"|D0-D3
 +
|align="center"|No Connected
 +
|-
 +
|align="center"|E
 +
|align="center"|GPIO22
 +
|-
 +
|align="center"|R/W  
 +
|align="center"|GND
 +
|-
 +
|align="center"|RS
 +
|align="center"|GPIO27
 +
|-
 +
|align="center"|OV
 +
|align="center"|Connect to the middle pin of potentiometer
 +
|-
 +
|align="center"|VDD
 +
|align="center"|5V
 +
|-
 +
|align="center"|VSS
 +
|align="center"|GND
 +
|-
 +
|}
 +
 
 +
[[File:Lcd1602-8.jpg.png]]<br>
 +
 
 +
<font color="red">Note: After you run the code, characters may not appear on the LCD1602. You need to adjust the contrast of the screen (the gradual change from black to white) by spinning the potentiometer clockwise or anticlockwise, until the screen displays characters clearly.</font><br>
 +
 
 +
'''Step 2:''' Transfer the package [http://wiki.sunfounder.cc/images/8/87/LCD1602_for_Raspberry_Pi.zip  LCD1602_for_Raspberry_Pi] to the Raspberry Pi<br>
 +
<pre>
 +
wget http://wiki.sunfounder.cc/images/8/87/LCD1602_for_Raspberry_Pi.zip
 +
</pre>
 +
 
 +
'''Step 3:''' Extract the package<br>
 +
<pre>
 +
unzip LCD1602_for_Raspberry_Pi.zip
 +
</pre>
 +
 
 +
'''<font color="orange">(For C Language Users)</font><br>
 +
'''Step 4:''' Get into the folder of code<br>
 +
<pre>
 +
cd LCD1602_for_Raspberry_Pi/C
 +
</pre>
 +
 
 +
'''Step 5:''' Compile<br>
 +
<pre>
 +
gcc lcd1602.c –o lcd1602 –lwiringPiDev –lwiringPi
 +
</pre>
 +
 
 +
'''Step 6:''' Run<br>
 +
<pre>
 +
sudo ./lcd1602
 +
</pre>
  
[[File:2-2.jpg]]<br>
+
'''<font color="orange">(For Python Users)</font><br>
 +
'''Step 4:''' Get into the folder of code<br>
 +
<pre>
 +
cd LCD1602_for_Raspberry_Pi/Python
 +
</pre>
  
Step 1: Build the circuit (make sure the pins are connected correctly. Otherwise, characters will not be displayed properly):<br>
+
'''Step 5:''' Run<br
 +
<pre>
 +
sudo python lcd1602.py
 +
</pre>
  
[[File:3-3.png]]<br>
 
  
Step 2: Copy the follwing code to the Arduino IDE ,click to the upload icon to upload the code to the control board.<br>
+
'''<font color="green">Experimental Phenomenon</font><br>
Step 3: Select correct Board and Port<br>
+
You should see two lines of characters displayed on the LCD1602: “hello, world! ” , “SunFounder”.<br>
Step 4: Upload the sketch to the SunFounder Uno board<br>
+
''<font color="red">Note:</font> you may need to adjust the potentiometer on the LCD1602 until it can display clearly.''<br>
+
[[File:lcd1602-9.jpg]]<br>
==Experimental Phenomenon==
+
You should now see the characters "SunFounder" and "hello, world" rolling on the LCD.<br>
+
  
[[File:4-4.jpg]]<br>
+
==Resource==
 +
[http://wiki.sunfounder.cc/images/b/b2/LCD1602_for_Arduino.rar  LCD1602_for_Arduino][[File:ZIP.jpg]]<br>
 +
[http://wiki.sunfounder.cc/images/8/87/LCD1602_for_Raspberry_Pi.zip  LCD1602_for_Raspberry_Pi][[File:ZIP.jpg]]<br>

Latest revision as of 03:33, 7 March 2018

Introduction

Lcd1602-1.jpg

LCD1602, or 1602 character-type liquid crystal display, is a kind of dot matrix module to show letters, numbers, and characters and so on. It's composed of 5x7 or 5x11 dot matrix positions; each position can display one character. There's a dot pitch between two characters and a space between lines, thus separating characters and lines. The model 1602 means it displays 2 lines of 16 characters.
Generally, LCD1602 has parallel ports, that is, it would control several pins at the same time. LCD1602 can be categorized into eight-port and four-port connections. If the eight-port connection is used, then all the digital ports of the SunFounder Uno board are almost completely occupied. If you want to connect more sensors, there will be no ports available. Therefore, the four-port connection is used here for better application.

Pins Functions

Lcd1602-2.jpg

The Experiment for Arduino

Components
- 1 * SunFounder Uno Board
- 1 * Breadboard
- 1 * LCD1602
- 1 * Potentiometer (50kΩ)
- 1 * USB Cable
- Several Jumper Wires


Experimental Procedures
Note: Before connecting circuit, need to plug the pin headers onto a breadboard, and then put the LCD1602 on to it for easy soldering.

Lcd1602-3-3.jpg

Step 1: Build the circuit (make sure the pins are connected correctly. Otherwise, characters will not be displayed properly):

Lcd1602-4.jpg.png

Step 2: Download the package LCD1602_for_Arduino, then unzip it and open the LCD1602.ino file

Lcd1602-5.jpg.png

Step 3: Select correct Board and Port
Step 4: Upload the sketch to the SunFounder Uno board


Experimental Phenomenon
Note: You may need to adjust the potentiometer on the LCD1602 until it can display clearly.
You should now see the characters "SunFounder" and "hello, world! " rolling on the LCD.

Lcd1602-6.jpg

The Experiment for Raspberry Pi

Components
- 1 * Raspberry Pi
- 1 * Breadboard
- 1 * LCD1602
- 1 * Potentiometer
- Several Jumper Wires


Experimental Procedures
Step 1: Build the circuit (please be sure the pins are connected correctly. Otherwise, characters will not be displayed properly):

LCD1602/2004 SunFounder Uno board
K GND
A 3.3V
D7 GPIO18
D6 GPIO23
D5 GPIO24
D4 GPIO25
D0-D3 No Connected
E GPIO22
R/W GND
RS GPIO27
OV Connect to the middle pin of potentiometer
VDD 5V
VSS GND

Lcd1602-8.jpg.png

Note: After you run the code, characters may not appear on the LCD1602. You need to adjust the contrast of the screen (the gradual change from black to white) by spinning the potentiometer clockwise or anticlockwise, until the screen displays characters clearly.

Step 2: Transfer the package LCD1602_for_Raspberry_Pi to the Raspberry Pi

wget http://wiki.sunfounder.cc/images/8/87/LCD1602_for_Raspberry_Pi.zip

Step 3: Extract the package

unzip LCD1602_for_Raspberry_Pi.zip

(For C Language Users)
Step 4: Get into the folder of code

cd LCD1602_for_Raspberry_Pi/C

Step 5: Compile

gcc lcd1602.c –o lcd1602 –lwiringPiDev –lwiringPi

Step 6: Run

sudo ./lcd1602

(For Python Users)
Step 4: Get into the folder of code

cd LCD1602_for_Raspberry_Pi/Python

Step 5: Run

sudo python lcd1602.py


Experimental Phenomenon
You should see two lines of characters displayed on the LCD1602: “hello, world! ” , “SunFounder”.

Lcd1602-9.jpg

Resource

LCD1602_for_ArduinoZIP.jpg
LCD1602_for_Raspberry_PiZIP.jpg