View source for LCD1602 Module

==Introduction==

[[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>

==Pins Functions==

[[File:lcd1602-2.jpg]]<br>

==The Experiment for Arduino==

'''<font color="green">Components</font><br>
- 1 * SunFounder Uno Board<br>
- 1 * Breadboard<br>
- 1 * LCD1602<br>
- 1 * Potentiometer (50kΩ)<br>
- 1 * USB Cable<br>
- Several Jumper Wires<br>


'''<font color="green">Experimental Procedures</font><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.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>

[[File:Lcd1602-7.jpg]]<br>
[[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>

'''<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 5:''' Run<br>  
<pre>
sudo python lcd1602.py
</pre>


'''<font color="green">Experimental Phenomenon</font><br>
You should see two lines of characters displayed on the LCD1602: “hello, world! ” , “SunFounder”.<br>
 
[[File:lcd1602-9.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>