Difference between revisions of "Open Source LED Dot Matrix Screen"

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==Principle of the Experiment==
 
==Principle of the Experiment==
*Features of the module '''[[Microduino-Module Dot Matrix]]''':
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*Features of the module '''[[Microduino-Dot Matrix]]''':
 
**The module is 8x8 dot matrix, and the size is 60mm*60mm;
 
**The module is 8x8 dot matrix, and the size is 60mm*60mm;
 
**The color display quality of each point is 24 bits, and the color display effect of the entity is 32k.
 
**The color display quality of each point is 24 bits, and the color display effect of the entity is 32k.
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==FAQ==
 
==FAQ==
 
*'''Q:How to know the IIC address?'''
 
*'''Q:How to know the IIC address?'''
**A:查阅'''[[https://www.microduino.cn/wiki/index.php/Microduino-Module_Dot_Matrix/zh#.E7.82.B9.E9.98.B5.E5.9C.B0.E5.9D.80.E8.AE.BE.E7.BD.AE.E6.96.B9.E6.B3.95 method to set the IIC address of the dot matrix module]]''' tutorial.
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**A:Refer to '''[[https://www.microduino.cn/wiki/index.php/Microduino-Dot_Matrix#.E7.82.B9.E9.98.B5.E5.9C.B0.E5.9D.80.E8.AE.BE.E7.BD.AE.E6.96.B9.E6.B3.95 method to set the IIC address of the dot matrix module]]''' tutorial.
 
*'''Q:How to use multiple screens at the same time?'''
 
*'''Q:How to use multiple screens at the same time?'''
**A:In the next page [[Open Source LED Dot Matrix]], there will be specific introduction of the cascade of multiple [[Microduino-Module Dot Matrix]].
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**A:In the next page [[Open Source LED Dot Matrix Clock]], there will be specific introduction of the cascade of multiple [[Microduino-Dot Matrix]].
 
*'''Q:Why does it display incompletely after counting to 20?'''
 
*'''Q:Why does it display incompletely after counting to 20?'''
 
**A:Because the dot matrix resolution is only 8*8, there are not enough pixels, and the screen can’t display the numbers after 20 completely.
 
**A:Because the dot matrix resolution is only 8*8, there are not enough pixels, and the screen can’t display the numbers after 20 completely.
 
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Revision as of 09:26, 7 April 2016

Language: English  • 中文

Outline

  • Project:Microduino LED dot matrix screen
  • Objective:TO be acquainted with the use of the Microduino Dot Matrix.
  • Difficulty:Low
  • Time-consuming:1 hour
  • Maker:peng

Bill of Material

Bill of Module

Function Number Function
Microduino-Core 1 Core board
Microduino-USBTTL 1 Program download
Microduino-Dot Matrix 1 Display
Microduino-Cube-S1 1 Extension

Other Material

Unit Number Function
USB cable 1 Power supply, and download
LED dot matrix screen shell suite 1 Shell
Double-sided adhesive 2 To stick the shell

Principle of the Experiment

  • Features of the module Microduino-Dot Matrix
    • The module is 8x8 dot matrix, and the size is 60mm*60mm;
    • The color display quality of each point is 24 bits, and the color display effect of the entity is 32k.
    • Support IIC communication protocol, and the IIC address can be set(1~64).

Program Download

  • Please keep to download and update the Microduino official latest IDE.
  • You can download a program from the link below:Dot-Matrix-base.ino

Programming

  • Overlay Microduino-Core and Microduino-USBTTL together.
    • Connect Microduino-USBTTL with USB cable and prepare to upload the program.
    • Note:Please upload programs before stacking all modules ntogether.
  • Open Arduino IDE for Microduino environment.(The reference to set up:AVR Core:Getting started
  • Click [Tool], confirm board card(Microduino-Core) and processor(Atmega328P@16M,5V) selected correctly, and select the corresponding port number(COMX).
  • Click [File]->[Open], browse to the project program address and click “Dot-Matrix-Base.ino” to open the program.
  • After all these items are right, click "→" button to download the program to the development board.

Installation

  • Step1:
    • Insert structure A3 vertically into structure A1.
Matrixjiegou1.jpg
  • Step2:
    • Use structure B2 to connect structure A1 and structure A2.
Matrixjiegou2.jpg
  • Step3:
    • Implant structure B1 into structure B2, and finally, use structure B3 and structure B4 to jam structure B2.
Matrixjiegou3.jpg
Matrixjiegou5.jpg
Matrixjiegou4.jpg

Operating Instruction


  • If successful, the dot matrix screen will display the following shapes and characters in turn.
    • Bitmap display(delivery)
    • Bit map display(BMP film)
    • Microduino characters flow transervely.
    • Microduino characters flow longitudinally.
    • Solid rectangle
    • Solid quadrilateral
    • Outlined rectangle
    • Outlined quadrilateral
    • Hollow cylindrical
    • Solid cylindrical
    • Straight line
    • Flowing mcookie character
    • 0-49 counting

LEDMatrix.jpg

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Code Instruction

 uint8_t Addr[MatrixPix_X][MatrixPix_Y] = { 64 }

Define the IIC address that is set for Dot Matrix module is 64 and cascade type.

 display.getDeviceAddr(a)

Get the IIC address of the device.

 display.getWidth(),display.getHeight()

Return X,Y coordinates.

 display.setLedColor(x, y, random(0, 255), random(0, 255), random(0, 255))

Set the color of each LED randomly.

 display.clearDisplay()

Clean up the screen.

 display.setColor(X,Y,Z)

Set the color of full screen. X:Red Y:Green Z:Blue

 display.writeString("string", MODE, time ,z)

string:An arbitrary string. MODE:MODE_H display characters horizontally. /MODE_V display characters vertically. time:Show time.(flow velocity). z:X/Y coordinate.

 display.drawBMP(X,Y,W,H,logoA)  

X:Horizontal coordinates Y:Longitudinal coordinate W:The width of the image H:The height of the image logoA: Image array.

 display.drawBMP(X,Y,logoB)

X:Horizontal coordinates Y:Longitudinal coordinate logoB:Image array(Because logoB is the array of BMP file, you don’t neeg to obtain the image size again. To get in-depth knowledge about BMP, you can refer to the dot matrix module display the BMP color graph).

 display.drawBox(X,Y,I,W)

This function is used to drawing a solid rectangle. X:Horizontal coordinate. Y:Longitudinal coordinate. I:Length. W:Width.

 display.drawRBox(X, Y, I,W)

This function is used to drawing a solid apex angle bending rectangular. X:Horizontal coordinate. Y:Longitudinal coordinate. I:Length. W:Width.

 display.drawFrame(X,Y,I,W)

This function is used to draw a hollow rectangle. X:Horizontal coordinate. Y:Longitudinal coordinate. I:Length. W:Width.

 display.drawRFrame(X,Y,I,W,)

This function is used to draw a hollow apex angle bending rectangular. X:Horizontal coordinate. Y:Longitudinal coordinate. I:Length. W:Width.

 display.drawCircle(X,Y,D)

This function is used to draw a hollow circle. X:Horizontal coordinate. Y:Longitudinal coordinate. D:Diameter.

 display.drawDisc(X,Y,D)

This function is to draw a solid circle. X:Horizontal coordinate. Y:Longitudinal coordinate. D:Diameter.

 display.drawLine(X,Y,M,N)

This function is to draw a straight line. X:Starting point horizontal coordinate. Y:Starting point longitudinal coordinate. M:Finishing point horizontal coordinate. N:Ending point longitudinal coordinate.

FAQ

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