View source for Lesson 31--Microduino 16*16 Lattice Character Static Display

{{Language | 第三十一课--Microduino 16*16点阵汉字静态显示}}
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==Objective==
Designed for LM-2256 series 16 *16 dot matrix, its size is 40.46*40.46*5mm.The size of each LED lamp is 2.0mm. Using four 74ls595 chips to control it, so you only need three pins to control 256 lights, which is enough to show a Chinese character not only just simple letters or numbers. 
This experiment combines Minroduino modules and the lattice, making it beautiful and compact. 
==Equipment==
*'''[[Microduino-Core]]'''
*'''[[Microduino-FT232R]]'''
*Other equipment
*USB calbe
*LM-2256 16 *16 lattice
*Pegboard
*Studs, screws
*Welding tools：
**Electric iron
**Solder
**Wire
**Forceps
==Document==
LM-2256 Series 16 *16 matrix displays：'''[[File:.led_16_16.zip]]'''
==Features==
*Smale, the size is 40.46*40.46*5mm；
*Using 2mm round LED；
*LED lattice screen on a black background, very beautiful;
==Debug==
===Welding circuit===
Step 1：Cut pegboard；

Step 2：Design the position of Microduino base plate, then Welding Microduino base plate；

Step 3：Fix the pegboard and lattice, and then plus studs for fixed;

[[File:Led2256_Circuit_2.jpg|800px|thumb|center|LM-2256]]

Step 4：Welding control pin：

*Pin connection：
[[File:Led2256_Circuit_3.jpg|800px|thumb|center|LM-2256]]

*Finished welding
[[File:Led2256_Circuit_4.jpg|800px|thumb|center|LM-2256]]
[[File:Led2256_Circuit_5.jpg|800px|thumb|center|LM-2256]]
===Program===
*Prepare Work：
**Download test program：'''[[File:.led_16_16_static.zip]]'''
**Modulus software：'''[[File:PCtolCD.zip]]'''
Step 1：Download test program, and then open it；
Step 2：Compile it and then select the board to download, after download, you can see a Chinese character "Ya" (雅);

[[File:Led2256_Circuit_6.jpg|800px|thumb|center|LM-2256]]

Step 3：Change the font;
Note:'''Change the modulus method to:Determinant, yang code, reverse. After finished, download directly.'''

Detailed information, please refer to :http://www.microduino.cc/wiki/index.php?title=%E7%AC%AC%E4%BA%8C%E8%AF%BE--Microduino_OLED%E4%BD%BF%E7%94%A8/zh

[[File:Led2256_Circuit_7.jpg|800px|thumb|center|LM-2256]]

==Result==
Through the test, it can display a Chinese character staticly, and each LED light's brightness is uniform, and beautiful.

==Extension==
In this experiment, we used Microduino-Core and Microduino Ft232R, thickness is a little big。If use the Microduino-32U4 (Instead Microduino-Core and Microduino Ft232R), the thickness will be decreased.

[[File:Led2256_Circuit_8.jpg|800px|thumb|center|LM-2256]]

==Issue need to pay attention==
*When welding microduino base plate, pay attention to pin. After welding, had better measure it using a multimeter, then power on.
*Change the font, need to set modulus format properly.
==Video==

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