Raspberry Pi Raspberry Pie CPU/ Memory Mini LCD Screen With Backlight PCD8544 And B+/B<br /><br />Raspberry pie drive PCD8544 tutorial:<br />1. The hardware how to connect:<br />B version of the connection mode:<br />B + version of the insert way: keep in mind the B + 2 * 20 p row needles Before the 2 * 13 p needles and B version is fully compatible with， that is exactly the signal definition. So B + and B module program is fully compatible with!<br />Software article<br />1. Install wiring PI first.<br />CD -<br />Git clone git://git.drogon.net/wiringPi<br />CD wiringPi<br />. / build<br />2. To establish a working directory<br />CD -<br />The mkdir cpu_show<br />3. Download the source code with the method of the SFTP to/home/PI/cpu_show<br />4. Compile the source code<br />CD ~ / cpu_show<br />Cc - o cpushow pcd8544_rpi. C PCD8544. C - L/usr/local/lib - lwiringPi<br />/ / the last execution effect<br />Sudo. / cpushow<br /><br />contrast change knowledge <br />Because each LCD contrast have differences， if you found display the contents of the is too dark. Or display the content is very weak.Need to modify the pcd8544_rpi. C contrast variables， the source code， and then recompile， and run to see effect change!<br /><img src="http://img6.eachbuyer.com/x9/p100/eb9599_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb9599_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb9599_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb9599_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb9599_5.jpg" />