简介

新型771RGB软屏，采用7*71颗灯珠组成，主要用于背包、酒瓶、衣服、腰带、表带、帽子、手镯；该LED柔性屏软屏，灯珠紧凑美观，亮度高，性能稳定，板面简洁，美观，生产方便，故障率低，是灯饰亮化的理想设计选择。

技术规格

安装方式: 镶嵌式
额定电流: 140（mA）
工作电压：5.0V
分辨率 7x71点
模块尺寸：269mm x 30mm
屏幕尺寸: 230.75x22.75mm（mm）
可显示颜色：红、黄、绿、青、兰、紫、白、黑
控制方式：串口通信

引脚说明

7x71 Flexible RGB LED Matrix


名称	功能描述
VCC	电源正极
GND	电源负极
RX	串口输入
TX	串口输出

引脚说明

函数库列表

设置显示信息

函数原型：void displayMessage(const char *message_)

函数功能：在软屏上显示字符（字母、数字）
参数：
- *message_：字符串,使用 "" 括起来，参数为字母、数字

例：

#include <Arduino.h>
#include <HardwareSerial.h>
#include <SoftwareSerial.h>
#include "DFRobot_SerialScreen771.h"

#ifdef ARDUINO_AVR_UNO
SoftwareSerial Serial1(2, 3); //RX, TX
#endif

DFRobot_SerialScreen771 screen(Serial1);

void setup() {
    /*Initialize communication interface (Serial1) and debug interface (Serial)*/
    Serial.begin(115200);
    Serial1.begin(19200);
    screen.begin();
    /*Display string "DFRobot"*/
    screen.displayMessage("DFRobot");
}

void loop() {

}

设置信息列表

函数原型：bool setMessageList(uint8_t banN, const char *message_);bool setMessageList(eBanner_t banN, const char *message_);

函数功能：设置8个信息列表
参数：
- banN：序号
- *message_：列表信息

例：

#include <Arduino.h>
#include <HardwareSerial.h>
#include <SoftwareSerial.h>
#include "DFRobot_SerialScreen771.h"

#ifdef ARDUINO_AVR_UNO
SoftwareSerial Serial1(2, 3); //RX, TX
#endif

DFRobot_SerialScreen771 screen(Serial1);
const char *s = "DFRobot";

const char* M1 = "DFRobot";       //"A"
const char* M2 = "<CRY>DFRobot";  //"B"
const char* M3 = "Hi!";           //"C"
const char* M4 = "<CRY>Hello!";   //"D"
const char* M5 = "World!";        //"E"
const char* M6 = "66";            //"F"
const char* M7 = "77";            //"G"
const char* M8 = "88";            //"H"


void setup() {
    /*Initialize communication interface (Serial1) and debug interface (Serial)*/
    Serial.begin(115200);
    Serial1.begin(19200);
    screen.begin();
    /*Send 8 information lists to the serial screen*/
    screen.setMessageList(1 << 0, M1);
    screen.setMessageList(1 << 1, M2);
    screen.setMessageList(1 << 2, M3);
    screen.setMessageList(1 << 3, M4);
    screen.setMessageList(1 << 4, M5);
    screen.setMessageList(1 << 5, M6);
    screen.setMessageList(1 << 6, M7);
    screen.setMessageList(1 << 7, M8);
    /* Prints a list of "DFRobot" in the message list, and the data of the M0 message list*/
    screen.displayBanner(1 << 0);
    /*Print data of M8 information list*/
    //screen.displayBanner(1 << 7);
    /*Print data for M1 and M8 information lists*/
    //screen.displayBanner(1 << 0 | 1 << 7);
    /*Display all information lists for M1~M8*/
    //screen.displayBanner(1 << 0 | 1 << 1 | 1 << 2 | 1 << 3 | 1 << 4 | 1 << 5 | 1 << 6 | 1 << 7);
}

void loop() {

}

设置移动方式

函数原型：bool setMoveMode(eMoveMode_t m_);

函数功能：设置显示信息的移动方式
参数：
- eMoveLeft：左移
- eMoveRight：右移
- eMoveHold：保持
- eMoveDown：下移
- eMoveUp：上移
- eMoveFlash：闪烁

例：

#include <Arduino.h>
#include <HardwareSerial.h>
#include <SoftwareSerial.h>
#include "DFRobot_SerialScreen771.h"

#ifdef ARDUINO_AVR_UNO
SoftwareSerial Serial1(2, 3); //RX, TX
#endif

DFRobot_SerialScreen771 screen(Serial1);

void setup() {
    /*Initialize communication interface (Serial1) and debug interface (Serial)*/
    Serial.begin(115200);
    Serial1.begin(19200);
    screen.begin();

    delay(5);
    /*Display string "DFRobot"*/
    screen.displayMessage("DFRobot");
    /*Set the move mode to hold*/
    /*eMoveMode_t: eMoveLeft = left
                   eMoveRight = right
                   eMoveHold = hold
                   eMoveDown = down
                   eMoveUp = up
                   eMoveFlash = flash
    */
    screen.setMoveMode(screen.eMoveHold);
}

void loop() {
    /*Switch a mobile display mode every 5s*/
    DFRobot_SerialScreen771::eMoveMode_t buf[]= {screen.eMoveLeft,screen.eMoveRight,screen.eMoveHold,screen.eMoveDown,screen.eMoveUp,screen.eMoveFlash};
    for(int i = 0; i < sizeof(buf)/sizeof(DFRobot_SerialScreen771::eMoveMode_t); i++){
        screen.setMoveMode(buf[i]);
        delay(5000);
    }
}

设置移动速度

函数原型：bool setMoveSpeed(eSpeedLevel_t s_)

函数功能：移动速度
参数：
- eSpeedLevel_1：Speed class 1
- eSpeedLevel_2：Speed class 2
- eSpeedLevel_3：Speed class 3
- eSpeedLevel_4：Speed class 4
- eSpeedLevel_5：Speed class 5
- eSpeedLevel_6：Speed class 6
- eSpeedLevel_7：Speed class 7
- eSpeedLevel_8：Speed class 8

例：

#include <Arduino.h>
#include <HardwareSerial.h>
#include <SoftwareSerial.h>
#include "DFRobot_SerialScreen771.h"

#ifdef ARDUINO_AVR_UNO
SoftwareSerial Serial1(2, 3); //RX, TX
#endif

DFRobot_SerialScreen771 screen(Serial1);

void setup() {
    /*Initialize communication interface (Serial1) and debug interface (Serial)*/
    Serial.begin(115200);
    Serial1.begin(19200);
    screen.begin();
 
    delay(5);
    /*Display string "DFRobot"*/
    screen.displayMessage("DFRobot");
    /*Set the display's movement mode to shift left*/
    screen.setMoveMode(screen.eMoveLeft);
    /*Set the displayed moving speed level*/
    /*eBrightLevel_t: eSpeedLevel_1 = Speed class 1
                      eSpeedLevel_2 = Speed class 2
                      eSpeedLevel_3 = Speed class 3
                      eSpeedLevel_4 = Speed class 4
                      eSpeedLevel_5 = Speed class 5
                      eSpeedLevel_6 = Speed class 6
                      eSpeedLevel_7 = Speed class 7
                      eSpeedLevel_8 = Speed class 8
    */
    screen.setMoveSpeed(screen.eSpeedLevel_1);
}

void loop() {

}

设置显示亮度

函数原型：bool setBrightness(eBrightLevel_t b_)

函数功能：设置背光亮度
参数：
- eBrightLevel_1：Brightness level 1
- eBrightLevel_2：Brightness level 2
- eBrightLevel_3：Brightness level 3
- eBrightLevel_4：Brightness level 4
- eBrightLevel_5：Brightness level 5
- eBrightLevel_6：Brightness level 6
- eBrightLevel_7：Brightness level 7
- eBrightLevel_8：Brightness level 8

例：

#include <Arduino.h>
#include <HardwareSerial.h>
#include <SoftwareSerial.h>
#include "DFRobot_SerialScreen771.h"

#ifdef ARDUINO_AVR_UNO
SoftwareSerial Serial1(2, 3); //RX, TX
#endif

DFRobot_SerialScreen771 screen(Serial1);

void setup() {
    // Initialize communication interface (Serial1) and debug interface (Serial)
    Serial.begin(115200);
    Serial1.begin(19200);
    screen.begin();

    // Display string "DFRobot"
    screen.displayMessage("DFRobot");
    // Set the brightness level of the display
    /*eBrightLevel_t: eBrightLevel_1 = Brightness level 1
                      eBrightLevel_2 = Brightness level 2
                      eBrightLevel_3 = Brightness level 3
                      eBrightLevel_4 = Brightness level 4
                      eBrightLevel_5 = Brightness level 5
                      eBrightLevel_6 = Brightness level 6
                      eBrightLevel_7 = Brightness level 7
                      eBrightLevel_8 = Brightness level 8
    */
    screen.setBrightness(screen.eBrightLevel_1);
}

void loop() {
}

设置显示颜色

函数原型：bool setDispalyColor(eColorMode_t font, eColorMode_t shading);

函数功能：设置显示颜色（字体颜色、背景颜色）
参数：
- oeColorMode_t font：字体颜色
- eColorMode_t shading：字体底纹
  - eColorRed：红色
  - eColorYellow：黄色
  - eColorGreen：绿色
  - eColorCyan：青色
  - eColorBlue：蓝色
  - eColorPurple：紫色
  - eColorWhite：白色
  - eColorBlack：黑色

例：

#include <Arduino.h>
#include <HardwareSerial.h>
#include <SoftwareSerial.h>
#include "DFRobot_SerialScreen771.h"

#ifdef ARDUINO_AVR_UNO
SoftwareSerial Serial1(2, 3); //RX, TX
#endif

DFRobot_SerialScreen771 screen(Serial1);

void setup() {
    /*Initialize communication interface (Serial1) and debug interface (Serial)*/
    Serial.begin(115200);
    Serial1.begin(19200);
    screen.begin();

    delay(5);
    /*Display string "DFRobot"*/
    screen.displayMessage("DFRobot");
    /*Set the string to display the background and font color, set it to red on the black background*/
    screen.setDispalyColor(screen.eColorRed, screen.eColorBlack);
}

void loop() {
    /*Switch one font color every 5s*/
    DFRobot_SerialScreen771::eColorMode_t backgroud,font;
    backgroud = screen.eColorBlack;
    DFRobot_SerialScreen771::eColorMode_t buf[]= {screen.eColorRed, screen.eColorYellow, screen.eColorGreen, screen.eColorCyan, screen.eColorBlue, screen.eColorPurple, screen.eColorWhite};
    for(int i = 0; i < sizeof(buf)/sizeof(DFRobot_SerialScreen771::eColorMode_t); i++){
        font = buf[i];
        screen.setDispalyColor(font, backgroud);
        delay(5000);
} 
}

设置全屏颜色

函数原型：bool setFullScreenColor(eColorMode_t color_);

函数功能：设置全屏显示颜色
参数：
- eColorRed：红色
- eColorYellow：黄色
- eColorGreen：绿色
- eColorCyan：青色
- eColorBlue：蓝色
- eColorPurple：紫色
- eColorWhite：白色
- eColorBlack：黑色

例：

#include <Arduino.h>
#include <SoftwareSerial.h>
#include "DFRobot_SerialScreen771.h"

#ifdef ARDUINO_AVR_UNO
SoftwareSerial Serial1(2, 3); //RX, TX
#endif

DFRobot_SerialScreen771 screen(Serial1);

void setup() {
    /*Initialize communication interface (Serial1) and debug interface (Serial)*/
    Serial.begin(115200);
    Serial1.begin(19200);
    screen.begin();
    /*Set screen color*/
    /*eColorMode_t: eColorRed = red
                    eColorYellow = yellow
                    eColorGreen = green
                    eColorCyan = cyan
                    eColorBlue = blue
                    eColorPurple = purple
                    eColorWhite = white
                    eColorBlack = black
    */
    screen.setFullScreenColor(screen.eColorBlack);
}

void loop() {
    /*Switch one screen color every 5s*/
    DFRobot_SerialScreen771::eColorMode_t buf[]= {screen.eColorRed, screen.eColorYellow, screen.eColorGreen, screen.eColorCyan, screen.eColorBlue, screen.eColorPurple, screen.eColorWhite,screen.eColorBlack};
    for(int i=0; i < sizeof(buf)/sizeof(DFRobot_SerialScreen771::eColorMode_t); i++){
        screen.setFullScreenColor(buf[i]);
        delay(5000);
} 
}

Arduino平台应用

按照引脚说明连接好硬件，并下载样例代码到UNO中，上传成功，即可看到软屏的彩色显示效果。

准备

硬件
- 1 x DFRduino UNO控制板购买链接
- 1 x 7x71 Flexible RGB LED Matrix
- 1 x 灯板转接线
软件
- Arduino IDE 点击下载Arduino IDE

接线图

样例代码

点击下载库文件库和例程下载。库安装参考

/*!
  * file SerialScreen771.ino
  *
  * Copyright   [DFRobot](https://www.dfrobot.com), 2016
  * Copyright   GNU Lesser General Public License
  *
  * version  V1.1
  * date  2022-1-24
  */

#include <Arduino.h>
#include <HardwareSerial.h>
#include <SoftwareSerial.h>
#include "DFRobot_SerialScreen771.h"

#ifdef ARDUINO_AVR_UNO
SoftwareSerial Serial1(2, 3); //RX, TX
#endif

DFRobot_SerialScreen771 screen(Serial1);

void setup() {
    /*Initialize communication interface (Serial1) and debug interface (Serial)*/
    Serial.begin(115200);
    Serial1.begin(19200);
    screen.begin();
    /*Set the brightness level of the display*/
    screen.setBrightness(screen.eBrightLevel_8);
    /*Set the move mode to hold*/
    screen.setMoveMode(screen.eMoveHold);
    /*Display string "DFRobot"*/
    screen.displayMessage("DFRobot");
    /*Set the string to display the background and font color, set it to red on the black background*/
    screen.setDispalyColor(screen.eColorRed, screen.eColorBlack);
}

void loop() {

}

显示效果

Mind+(基于Scratch3.0)图形化编程

1、下载及安装软件。下载地址：https://mindplus.cc 详细教程：Mind+基础wiki教程-软件下载安装

2、软件右上角切换开关，切换到“上传模式”。详细教程：Mind+基础wiki教程-上传模式编程流程

3、“扩展”中选择“主控板”中的“Arduino Uno”。“用户库”中搜索柔性屏并加载。详细教程：Mind+基础wiki教程-加载扩展库流程

4、进行编程，程序如下图：

5、菜单“连接设备”，“上传到设备”

常见问题

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DFRobot商城购买链接