致敬学长！J20航模遥控器开源项目计划【开局篇】 | 先做一个开机界面 | MATLAB图像二值化 | Img2Lcd图片取模

致敬学长！J20航模遥控器开源项目计划【开局篇】 | 先做一个开机界面 | MATLAB图像二值化 | Img2Lcd图片取模 | OLED显示图片

我们的开源宗旨：* 协调开放合作共享

拥抱开源，丰富国内开源生态，开展多人运动，欢迎加入我们哈~

和一群志同道合的人，做自己所热爱的事！

项目开源地址：https://github.com/Cai-Zi/STM32_RC_Transmitter

Bilibili账号：蔡子CaiZi

个人主页：https://space.bilibili.com/349576976

1.为什么要用STM32做航模遥控器？Arduino不香嘛？

之前用Arduino Pro Mini制作了一个航模遥控器+接收机，不得不说Arduino开发起来非常方便，但是博主用的开发板比较廉价，芯片资源较少，只能实现基础功能，遥控性能也不能令人满意。我们的经费又不够来买大几百的UNO，怎么办？我找到了同价位的STM32F103C8T6开发板，十元包邮解君愁！这个小板子于我们遥控器而言，资源足够用了，别人甚至拿它来玩平衡车、四旋翼、智能家居，足见其强大！

2.为什么要命名为J20遥控器？

其一，我们自己DIY的遥控器，当然要用我国之重器-J20来命名！相信如果当年LUOLI大佬开发遥控器时，我们祖国的J20面世了，他也会用J20来命名自己的遥控器，而不是SU27，每个人都有自己的民族自豪感，我也一样！

其二，J20的总设计师-杨伟院士，是我的学长！招生宣传一波哈哈哈哈哈哈，欢迎报考西北工业大学！（招生办是不是该打钱了）我们学校真是太低调了，当年报考前我压根没听说过西工大，宣传力度要加强啊。

其三，今年是2020年，就说应景不应景！J20中的数字也象征着我们的开发时间，独特的年份，用来命名我们的遥控器刚刚好~

3.为什么要记录开发制作过程？

博主也是边学边做，并且是利用业余时间（导师：论文看累了，就敲点代码放松一下），实际上很耗费时间和精力啊！把学习过程记录下来，一是方便加深自己的理解，二是希望能帮到别人叭，三是提供给DIY玩家自己改造的空间，一千个人心中有一千个哈姆雷特，每个人都有自己的想法，授人以鱼不如授人以渔，教程可以帮助读者完成自己的个性化设计，比如设计开机界面、添加修改功能。

项目完全开源，还附带教程，怎么样？上车吧！

开始正文

1. 项目计划

前天，北斗三号最后一颗全球组网卫星发射成功，实现全球组网。不得不说我们祖国越来越强大了，我们自己也要更努力才行啊，现在我们总被漂亮国卡脖子，但是莫欺少年穷！我们每个人都为祖国建设添砖加瓦，迟早祖国会实现伟大复兴！

北斗系统建设采用“三步走”战略-【从无到有-服务亚太-全球组网】，那么我们的遥控器也分三步走，先完成基础版，实现遥控器的基础功能，再进行升级，添加屏幕界面交互，最后添加更高级人性化的功能。先会爬再会走路最后学会奔跑，这样看，万物是不是都相通的？

致敬学长！J20航模遥控器开源项目计划【开局篇】 | 先做一个开机界面 | MATLAB图像二值化 | Img2Lcd图片取模 | OLED显示图片

2. 开机界面制作

侃了这么多，来开工吧，万事开头难，我们先做一个帅气的J20开机界面！

致敬学长！J20航模遥控器开源项目计划【开局篇】 | 先做一个开机界面 | MATLAB图像二值化 | Img2Lcd图片取模 | OLED显示图片

（1）修改图片尺寸

找一张J20图片，用2345看图王修改图片尺寸128像素*64像素（或者比这个范围小一点），因为我们的OLED显示屏只有128*64个像素点，这一步也可以和第二步一起用程序实现。

（2）图像二值化

所谓图像二值化，就是将彩色图片变成黑白的，我们的显示屏单个像素只有亮/暗两种状态，对应1/0二值。可以用MATLAB/Python/Photoshop等来处理成黑白的，这里我用的是MATLAB，图片和m文件放在同一文件夹，代码如下：

 close all

 clear all

 clc

 %%

 A=imread('j20.jpg');% 输入图片

 n = graythresh(A);

 % D=imbinarize(A,n);

 D=im2bw(A,n);

 % figure;

 % imshow(D);

 imwrite(D,'j20.bmp');% 输出图片

 e=imread('j20.bmp');

 [m,n] = size(e);

 img = zeros(m,n);

 fd=[m,n,];%设置空白图片矩阵

 f=uint8 (round (fd*)); %转换为RGB值

 bg=;%灰色背景51

 for i=::m

    for j=::n

        if (e(i,j)<=)

            f(i,j,)=;

            f(i,j,)=;

            f(i,j,)=;

        else

            f(i,j,)=;

            f(i,j,)=;

            f(i,j,)=;

        end

    end

 end

 % figure;

 % imshow(f);

 % sa=imcrop(f,[,,,]);%裁剪[左上角起始位置x,y,裁剪宽,高]

 % imwrite(f,'j20.png');

生成j20.bmp后，有一些不满意的地方，接下来我们拿PS来修一下。

花费一点时间，把边边角角清理干净，把线条补充上，再加个J-20文字，最后保存成bmp文件。

（3）Img2Lcd图片转数组

打开刚才修好的bmp图片，按如下四步操作，保存数组。如果发现显示不对，可以尝试改变图中设置，如果你不想搞懂OLED显示原理，那么一个一个试就可以了。扫描模式（4种选项）和6个选项栏（勾选/不勾选），最多4*2^6=256次，我比较幸运，只试了10次。

致敬学长！J20航模遥控器开源项目计划【开局篇】 | 先做一个开机界面 | MATLAB图像二值化 | Img2Lcd图片取模 | OLED显示图片

奉上我做好的两个数组，建议给我们的UI设计师加鸡腿！最后一张太好看了叭！

致敬学长！J20航模遥控器开源项目计划【开局篇】 | 先做一个开机界面 | MATLAB图像二值化 | Img2Lcd图片取模 | OLED显示图片

 unsigned char J20logo[] =

 {

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 };

 unsigned char J20logoR[]=

 {

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 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0XF0,0X80,0X80,0X00,0XF0,0XA0,0XF0,0X00,

 0X70,0X50,0XF0,0X00,0XF0,0X00,0XF0,0X90,0XF0,0X00,0X00,0X00,0X00,0XF0,0X90,0X90,

 0X00,0XF0,0X90,0XF0,0X00,0XF0,0X80,0XF0,0X00,0X80,0XF0,0X80,0X00,0XF0,0X80,0X80,

 0X00,0XF0,0X90,0XF0,0X00,0XF0,0X10,0X00,0XF0,0X10,0X00,0XF0,0X90,0XD0,0X00,0XF0,

 0X80,0X80,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0XF0,0XF0,0XF0,0XF0,0XF0,0XF0,0XFF,0XE0,0XC0,0X80,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0XFF,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X08,0X0C,0X0E,0X0E,0X0E,0X0E,0X0E,0X0E,0X0E,0X0E,

 0XFE,0XFE,0XFE,0XFE,0XFE,0XFE,0XFE,0X00,0X0E,0X1E,0X3E,0X7E,0XFE,0XFE,0XFE,0XFE,

 0XFE,0XEE,0XCE,0X8E,0X0E,0X0E,0X0E,0X0E,0X0E,0X0E,0X0E,0X0C,0X08,0X00,0XFE,0XFE,

 0XFE,0XFE,0XFE,0XFE,0XCE,0X8E,0X0E,0X0E,0X0E,0X0E,0X0E,0X0E,0XFE,0XFE,0XFE,0XFC,

 0XF8,0XF0,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X02,

 0X06,0X8E,0XDE,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFE,0XFC,

 0XF8,0XF0,0XE0,0XC0,0X80,0X00,0X00,0X00,0X00,0X00,0X07,0X1C,0X30,0XE0,0X80,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0X00,0X00,0X00,0X00,0X00,0X00,0X01,0X03,0X07,

 0X0F,0X1F,0X3F,0X7F,0XFF,0XFE,0XFC,0XF8,0XF0,0XE0,0XC0,0X80,0X00,0X00,0XFF,0XFF,

 0XFF,0XFF,0XFF,0XFF,0X03,0X07,0X0F,0X1E,0X3C,0X78,0XF0,0XE0,0XFF,0XFF,0XFF,0XFF,

 0XFF,0XFF,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X10,0X18,0X1C,0X1E,

 0X1F,0X1F,0X1F,0X1F,0X1F,0X1F,0X1F,0X1F,0X1F,0X1F,0X1F,0X1F,0X1F,0X1F,0X1F,0X1F,

 0X3F,0X7F,0XFF,0XFF,0XFF,0XFF,0XFE,0XFC,0XF8,0XF0,0XE0,0XC0,0X80,0X00,0X01,0X07,

 0X0C,0X38,0X20,0X30,0X18,0X0C,0XFE,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X1F,0X1F,0X1F,0X1F,0X1F,0X1F,0X1F,0X00,0X00,0X1C,0X1C,0X1C,0X1C,0X1C,0X1C,0X1C,

 0X1C,0X1C,0X1C,0X1C,0X1C,0X1F,0X1F,0X1F,0X1F,0X1F,0X1F,0X1F,0X00,0X00,0X1F,0X1F,

 0X1F,0X1F,0X1F,0X1F,0X1C,0X1C,0X1C,0X1C,0X1C,0X1C,0X1C,0X1D,0X1F,0X1F,0X1F,0X1F,

 0X1F,0X1F,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X01,0X03,0X03,0X07,0X8F,0XCF,0XFF,0XFF,0XFF,0XFF,0XFE,0XFC,

 0XF8,0XF0,0XE0,0XC0,0X80,0X00,0X1F,0X70,0XC0,0X80,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X02,0X03,0X03,0X03,0X03,0X03,0X03,0X03,0X03,0X03,

 0X03,0X03,0X03,0X07,0X0F,0X0F,0X1E,0X3C,0X38,0X73,0X66,0XDC,0XF0,0XE0,0X80,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X01,0X01,0X03,0X07,

 0X04,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

 };

图片取模数组代码

（4）图片显示程序

首先声明数组是全局变量，再在循环中调用显示函数。

 /*

 =============菜单显示==============

     芯片STM32F103C8T6，先做一个J20开机界面

     OLED显示屏：

                 GND   电源地

                 VCC   接3.3v电源

                 SCL   接PB8（SCL）

                 SDA   接PB9（SDA）

     串口USB-TTL接法：

                 GND   电源地

                 3V3   接3.3v

                 TXD   接PB7

                 RXD   接PB6

     ST-LINK V2接法：

                 GND   电源地

                 3V3   接3.3v

                 SWCLK 接DCLK

                 SWDIO 接DIO

     by Bilibili 蔡子CaiZi

 */

 #include "config.h"

 #include "delay.h"

 #include "usart.h"

 #include "stm32f10x.h"

 #include "oled.h"

 #include "rtc.h"

 #include "stdio.h"

 #include "string.h"

 extern unsigned char J20logo[];

 extern unsigned char J20logoR[];

 extern unsigned char BMP1[];

 int main()

 {

 //    u8 txt[16]={0};

     delay_init();//初始化延时函数

     NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); //设置NVIC中断分组2，2位抢占优先级和2位子优先级

     usart_init();//初始化串口1，波特率为115200

 //    TIM3_PWM_Init(19999,71);//预分频72，频率1MHz，周期1us；自动装载值20 000，故PWM周期1us*20 000

 //    TIM2_Init(499,71);//1MHz，每500us采集一次；可设置9us以上，但过小影响OLED显示

 //    DMA1_Init();    //DMA初始化

 //    GPIOA_Init();    //PA初始化

 //    Adc_Init();        //ADC初始化

 //    RTC_Init();          //RTC初始化

     OLED_Init();    //初始化OLED

     OLED_Clear();

     OLED_Refresh_Gram();

     while (){

 //        itoa(PWM1value,txt,10);//将int类型转换成10进制字符串

 //        printf("采样值：%d\t舵量：%s\t",ch1Value,txt);

 //        printf("当前时间：%d:%d:%d\n",calendar.hour,calendar.min,calendar.sec);

 //        //OLED_Clear();//一直清屏会造成闪烁

 //        strcat(txt," us");//合并字符串

 //        OLED_ShowString(6,3,txt,24); //位置6,3；字符大小24*24点阵

         OLED_DrawBMP(,,,,J20logo);

 //        OLED_DrawBMP(0,0,128,8,BMP1);

         //OLED_ShowString(6,3,"CaiZi",24); //位置6,3；字符大小24*24点阵

         //OLED_Refresh_Gram();

         delay_ms();

     }

 }

完整的工程文件已上传天翼云盘：

https://cloud.189.cn/t/rYZzQ3yIbIrm（访问码：5eju）

项目宣传视频

https://www.bilibili.com/video/BV1Vg4y1v7oQ

写在最后：

如果你手上有废弃的遥控器，有吃灰的开发板，有9块9包邮的烙铁或者焊台，欢迎加入我们，一起来感受DIY的乐趣；

如果你是一个技术小白，拥有一腔热血却很迷茫，欢迎加入我们，虽然这里除了知识和快乐，其他什么都没有；

无论你是入坑菜鸟还是航模老鸟，只要你有一颗热爱的心，来自五湖四海，我们都期待你的加入！

我们期待听到不同的声音，希望得到更多人的反馈，帮助我们来研发和测试~

QQ群：1091996634，密码：J20

想要一起研发的话，加群后请私聊群主喔~

开源团队现有成员：（持续更新）

蔡子CaiZi（B站up主）   - STM32开发
A-XIN（模友） - STM32开发
小何（模友）    - PCB设计
ZL_Studio（B站up主）   - C51开发
王天天（舍友）        - STM32开发
刘桶桶（模友）          - PCB设计
简繁（模友）         - UI设计
王博（模友）         - STM32开发
与非门（模友）          - STM32开发
Talons（模友） - STM32开发
大米粥（模友） - 结构设计
P a S S ||（模友） - STM32开发

致敬学长！J20航模遥控器开源项目计划【开局篇】 | 先做一个开机界面 | MATLAB图像二值化 | Img2Lcd图片取模 | OLED显示图片

秒客网

致敬学长！J20航模遥控器开源项目计划【开局篇】 | 先做一个开机界面 | MATLAB图像二值化 | Img2Lcd图片取模 | OLED显示图片

1.为什么要用STM32做航模遥控器？Arduino不香嘛？

2.为什么要命名为J20遥控器？

3.为什么要记录开发制作过程？

1. 项目计划

2. 开机界面制作

（1）修改图片尺寸

（2）图像二值化

（3）Img2Lcd图片转数组

（4）图片显示程序

写在最后：

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