Difference between revisions of "Lesson 31--Static Display of Chinese Characters on the 16*16 Lattice"

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==Objective==
 
==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.  
+
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.  
 
This experiment combines Minroduino modules and the lattice, making it beautiful and compact.  
 
==Equipment==
 
==Equipment==
Line 10: Line 10:
 
*'''[[Microduino-USBTTL]]'''
 
*'''[[Microduino-USBTTL]]'''
 
*Other equipment
 
*Other equipment
−
*USB calbe
+
*USB cable
 
*LM-2256 16 *16 lattice
 
*LM-2256 16 *16 lattice
 
*Pegboard
 
*Pegboard
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LM-2256 Series 16 *16 matrix displays：'''[[File:.led_16_16.zip]]'''
 
LM-2256 Series 16 *16 matrix displays：'''[[File:.led_16_16.zip]]'''
 
==Features==
 
==Features==
−
*Smale, the size is 40.46*40.46*5mm；
+
*Small, the size is 40.46*40.46*5mm;
−
*Using 2mm round LED；
+
*Using 2mm round LED;
 
*LED lattice screen on a black background, very beautiful;
 
*LED lattice screen on a black background, very beautiful;
 
==Debug==
 
==Debug==
 
===Welding circuit===
 
===Welding circuit===
−
Step 1：Cut pegboard；
+
Step 1: Cut pegboard；
  
−
Step 2：Design the position of Microduino base plate, then Welding Microduino base plate；
+
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;
+
Step 3: Fix the pegboard and lattice, and then plus studs for fixed;
  
 
[[File:Led2256_Circuit_2.jpg|800px|thumb|center|LM-2256]]
 
[[File:Led2256_Circuit_2.jpg|800px|thumb|center|LM-2256]]
  
−
Step 4：Welding control pin：
+
Step 4: Welding control pin;
  
−
*Pin connection：
+
*Pin connection:
 
[[File:Led2256_Circuit_3.jpg|800px|thumb|center|LM-2256]]
 
[[File:Led2256_Circuit_3.jpg|800px|thumb|center|LM-2256]]
  
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[[File:Led2256_Circuit_5.jpg|800px|thumb|center|LM-2256]]
 
[[File:Led2256_Circuit_5.jpg|800px|thumb|center|LM-2256]]
 
===Program===
 
===Program===
−
*Prepare Work：
+
*Prepare Work:
−
**Download test program：'''[[File:.led_16_16_static.zip]]'''
+
**Download test program:'''[[File:.led_16_16_static.zip]]'''
−
**Modulus software：'''[[File:PCtolCD.zip]]'''
+
**Modulus software:'''[[File:PCtolCD.zip]]'''
−
Step 1：Download test program, and then open it；
+
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);
+
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]]
 
[[File:Led2256_Circuit_6.jpg|800px|thumb|center|LM-2256]]
  
−
Step 3：Change the font;
+
Step 3: Change the font;
 
Note:'''Change the modulus method to:Determinant, yang code, reverse. After finished, download directly.'''
 
Note:'''Change the modulus method to:Determinant, yang code, reverse. After finished, download directly.'''
  
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==Result==
 
==Result==
−
Through the test, it can display a Chinese character staticly, and each LED light's brightness is uniform, and beautiful.
+
Through the test, it can display a Chinese character statically, and each LED light's brightness is uniform, and beautiful.
  
 
==Extension==
 
==Extension==

Latest revision as of 08:44, 12 September 2016

Language: English  • 中文

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

Document

LM-2256 Series 16 *16 matrix displays：File:.led 16 16.zip

Features

  • Small, 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;

LM-2256

Step 4: Welding control pin;

  • Pin connection:
LM-2256
  • Finished welding
LM-2256
LM-2256

Program

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);

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

LM-2256

Result

Through the test, it can display a Chinese character statically, 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.

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

http://v.youku.com/v_show/id_XNjc2MzI1NTMy.html

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