基于wiscam+arduino 控制视频小车（开源）
本帖最后由 fwy丶lucifer 于 2017-7-7 18:04 编辑1、基本原理在一些恶劣施工现场，或夜晚安全巡逻等场景中都需要一台能代替人眼睛的装备，因此视频小车就被需要了。WisCam通过Wi-Fi连接网络/工作在AP模式，上位机软件发送控制指令到WisCam，然后透传数据到串口，并与Arduino串口连接，硬件连接成功之后，手机或者电脑就可以通过TCP Client 连接到wiscam的TCP server,端口号是502，建立链接之后就可以通过硬件串口透传数据了。最后通过GPIO、PWM控制L298N，驱动电机速度和正反转。http://player.youku.com/player.php/sid/XMjc4NTAwNjg4MA==/v.swf 2、材料准备1) arduino R3开发板一块2) WisCam视频开发板一块3) L298N电机驱动板两块4) 四轮驱动小车一台5) 12V电源3、主模块介绍arduino：更多资料去官网：https://www.arduino.cc/
arduino它构建于开放原始码simple I/O介面版，并且具有使用类似Java、C语言的Processing/Wiring开发环境。主要包含两个主要的部分：硬件部分是可以用来做电路连接的Arduino电路板；另外一个则是Arduino IDE，你的计算机中的程序开发环境。你只要在IDE中编写程序代码，将程序上传到Arduino电路板后，程序便会告诉Arduino电路板要做些什么了。
WisCam IoT WiFi开源硬件模块更多资料去官网：http://www.rakwireless.com/cn/WisCam是一款超低成本物联网WIFI视频评估套件，集成强大的ARM9处理器，Nabto P2P云服务器实现视频远程播放，2.4G WI-FI模组，硬件兼容Arduino等。WisCam可以通过Wi-Fi传输视频到APP，APP源码，硬件设计资料源文件，软件代码均已上传到Github。因此可快速帮助开发人员使用Linux操作系统设计Wi-Fi视频产品。 WisCam支持YUV RAW DATA，开发人员可以进行视频缩放（1〜8倍缩放），视频裁剪，视频层叠，更改CMOS图像传感器等。 4、硬件连接把Wiscam的5V接Arduino5V、GND接GND，Wiscam TXD接Arduino RXD、Wiscam RXD接Arduino TXD，每个L298N包含两路电机控制接口，每路控制接口包含EN、IN1、IN2，EN为使能输出，IN1-IN2为方向控制，Arduino可以通过PWM接入EN，实现速度控制。5、测试代码上位机软件https://github.com/galaxyofo/wiscam_car_controller.git下载并编译，输入./controller 502 通过键盘的方向键控制小车前进转向 Arduino程序/*********************************************************定义前进、后退引脚****************************************************************************************/int forward_r1 = 2;/控制向前右int forward_r2 = 4;/控制向前右 int forward_l1 = 6;/控制向前左int forward_l2 = 7;/控制向前左 int forward_pwm1 = 3;/控制速度int forward_pwm2 = 5;/控制速度 int back_r1 = 8;int back_r2 = 9;int back_l1 = 12;int back_l2 = 13;int back_pwm1 = 10;int back_pwm2 = 11; int driver_status = -1; int stop_delay = 0;int duration = 0; #define MAX_SPEED 0x60#define ACC_SPEED 2 void setup(){pinMode(forward_r1, OUTPUT);pinMode(forward_r2, OUTPUT);pinMode(forward_l1, OUTPUT);pinMode(forward_l2, OUTPUT); pinMode(back_r1, OUTPUT);pinMode(back_r2, OUTPUT);pinMode(back_l1, OUTPUT);pinMode(back_l2, OUTPUT);analogWrite(forward_pwm1,0x00);analogWrite(forward_pwm2,0x00); analogWrite(back_pwm1,0x00);analogWrite(back_pwm2,0x00); Serial.begin(115200);} void loop() { if (Serial.available() > 0) { char cmd = Serial.read(); if (driver_status != cmd) { switch (cmd) { case '0': driver_stop(); break; case '1': driver_forward(); duration = 600; break; case '2': driver_backward(); duration = 600; break; case '3': driver_left(); duration = 300; break; case '4': driver_right(); duration = 300; break; default: break; } driver_status = cmd; } stop_delay = 0;} else {if (stop_delay++ > duration) { stop_delay = 0; driver_status = 0; driver_stop();}delay(1);}}/*********************************************************************向后****************************************************************/ void driver_backward(){digitalWrite(forward_r1, HIGH);digitalWrite(forward_r2, LOW);digitalWrite(forward_l1, HIGH);digitalWrite(forward_l2, LOW);digitalWrite(back_r1, HIGH);digitalWrite(back_r2, LOW);digitalWrite(back_l1, HIGH);digitalWrite(back_l2, LOW); for (int i = 0x10; i < MAX_SPEED; i += ACC_SPEED) { analogWrite(forward_pwm1,i); analogWrite(forward_pwm2,i); analogWrite(back_pwm1,i); analogWrite(back_pwm2,i); }}/*********************************************************************向前****************************************************************/ void driver_forward(){digitalWrite(forward_r1, LOW);digitalWrite(forward_r2, HIGH);digitalWrite(forward_l1, LOW);digitalWrite(forward_l2, HIGH);digitalWrite(back_r1, LOW);digitalWrite(back_r2, HIGH);digitalWrite(back_l1, LOW);digitalWrite(back_l2, HIGH); for (int i = 0x10; i < MAX_SPEED; i += ACC_SPEED) { analogWrite(forward_pwm1,i); analogWrite(forward_pwm2,i); analogWrite(back_pwm1,i); analogWrite(back_pwm2,i); } }/*********************************************************************停止****************************************************************/ void driver_stop(){analogWrite(forward_pwm1,0x00);analogWrite(forward_pwm2,0x00); analogWrite(back_pwm1,0x00);analogWrite(back_pwm2,0x00); }/*********************************************************************向右****************************************************************/void driver_right(){analogWrite(back_pwm2, 0);analogWrite(forward_pwm1, 0);for (int i = 0X20; i < MAX_SPEED; i += ACC_SPEED) { analogWrite(back_pwm1, i); analogWrite(forward_pwm2, i);}}/*********************************************************************向左****************************************************************/void driver_left(){analogWrite(back_pwm1, 0);analogWrite(forward_pwm2, 0);for (int i = 0X20; i < MAX_SPEED; i += ACC_SPEED) { analogWrite(back_pwm2, i); analogWrite(forward_pwm1, i);}
赞一个！值得学习！ dbtet 发表于 2017-7-4 08:51
赞一个！值得学习！
谢谢，互相学习，又弄了一个小应用，哈哈 dbtet 发表于 2017-7-4 08:51
赞一个！值得学习！
我更新了更详细的说明
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