Lesson 31--Static Display of Chinese Characters on the 16*16 Lattice

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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

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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