Lesson 31--Microduino 16*16 Lattice Character Static Display

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Objective

LM-2256 series of 16*16 lattice, its size is 40.46*40.46*5mm, each round LED light's size is 2.0mm. Using 4 74ls595 chips to control it, so you only need three pins to control 256 LEDs. Enough to show a Chinese character, rather than simple letters or numbers. This experiment doesn't use a simple jumper connection, instead welding circuit board, combines minroduino module and lattice, it's beautiful and small as a whole.

Equipment

Document

LM-2256 Series 16 *16 matrix displays：文件:.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;

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 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.

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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