Arduino Accessory Four Digital Tube Display Brightness Adjustable Hour LED

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Introduction

  • When the module is a 12 feet to take four hours of total Yang digital tube display module (0.36 inches), driver chip for TM1637, just can make 2 root signal single-chip micro computer control four 8 digital tube.

Features

  • Display device to Yang scarlet letterfor four digital tube

  • Digital tube 8 grey level is adjustable

  • The control interface level for 5 V or3.3 V

  • 4 M2 screw positioning hole, easy toinstall

Four digital tube display module interface as shown in the figure below

  • Control interface: a total of 4 pins (GND, VCC, DIO, CLK), GND for land, VCC power supply, DIO for data input and output, for the clock signal CLK feet;

  • Four digital tube: a total of anode with the score point 0.36 -inch digital tube, the scarlet letter highlighting;

  • Location hole: 4 M2 screw positioning hole, diameter of 2.2 mm, to facilitate installation positioning module, realize the combination between modules;

  • An overview of the library routines

  • Clock Display: use the mother board MCU timer 1 to timing, and let the four digital tube display.

  • Number Flow: 0 ~ 9, A, b, C, d, E, F 16 characters such as flow from right to left.

  • The StopWatch: use the mother board MCU timer 1 to timing, can match the keys to realize Stop Watch function.

The experiment equipment

  • One Arduino compatible motherboard Catduino (not familiar with open source hardware can be understood as Atmega328P microcontroller open board) and a mini USB cable;

  • A four digital tube display module;

  • 4 male, the female dupont thread that is used to connect the module interface and the control of Catduino development board;

The experimental steps

  • With 4 male, the female dupont thread will four digital tube display module and Catduino connected, in the following table, as shown in figure

Catduino

line

4 bit digital tube

GND

black

GND

5V

red

VCC

D2

yellow

DIO

D3

white

CLK

  • Download the code to the module above Arduino1.0 version applicable package DigitalTubeforArduino1.0 +, if libraries directory haven't Timer One_v9 libraries, also need to download the program from a network backup library, and then directly into it.. \ arduino - 1.0 \ libraries directory.

  • Use the mini USB connect Catduino, if is the first time to use the main board, the serial port (USB) driving from the Arduino IDE drivers find the USB drivers in the directory.

  • Reopen the Arduino IDE, click on the toolbar for the Open button, Open the NumberFlow DigitalTube routines, as shown in the figure below.

  • Pick a serial port, name of the board, click the burn button, can burn. This routine can make 0 ~ 9, A, b, C, d, E, F 16 characters such as flow from right to left, as shown in the figure below.

  • And adjust the digital tube display function for the class of gray TM1637 the set () function, the input parameters of 0 ~ 7, the greater the number, the brightness is higher.


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