自製Makeblock Orion相機

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作者：虎子哥
連結：http://bbs.makeblock.com/thread-799-1-1.html
來源：MakeBlock論壇


Makeblock Orion主控板的mcu是Atmel的328p，性能和資源比較有限。雖然勉強可以做普通8位元攝像頭資料獲取，不過連線什麼也比較亂。所以在淘寶上找了一款串口控制和傳輸的攝像頭，非常適合Arduino開發及簡單圖像應用（家庭監控攝像頭，植物生長的延時攝影）。
為了固定這個攝像頭，用幾個零件搭了個上下旋轉的小支架。

Me Orion 主控板　x1
双孔梁 0824-032　x1
支架 3x3　x2
RJ25轉接器　x1
串口攝影機　x1
鉚釘、螺絲、RJ25線　若干

支架结構正面

支架结構背面

攝影機的預設波特率是115200，由於範例程式的串口設定，所以將攝影機的波特率先設定為19200。

Arduino的代碼
########代碼########
#include "MeOrion.h"
#include <SoftwareSerial.h>
 
SoftwareSerial sw(8,2);
String buffer = "";
void setup() {
  Serial.begin(115200);
  sw.begin(19200);
}
 
double lastTime = 0;
bool isCapture = false;
int bytesSize = 0;
int bytesIndex = 0;
void loop() {
  if(Serial.available()){
    char c = Serial.read();
    if(c=='\n'){
      parseBuffer();
    }else{
      buffer+=c;
    }
  }
  if(sw.available()){
    Serial.write(sw.read());
  }
}
void parseBuffer(){
  buffer = buffer+"/";
  int count = 0;
  int startIndex = 0;
  int endIndex = 0;
  int len = buffer.length();
  if(len<1){
    return;
  }
  String tmp;
  String values[10];
  while(true) {
    startIndex = buffer.indexOf("/", endIndex);
    endIndex = buffer.indexOf("/", startIndex + 1);
    tmp = buffer.substring(startIndex+1, endIndex);
    values[count] = tmp;
    count++;
    if(endIndex==len-1) break;
  }
  if(values[0].equals("resolution")){
    cameraResolution(values[1].toInt());
  }else if(values[0].equals("clear")){
    cameraClear();
  }else if(values[0].equals("reset")){
    cameraReset();
  }else if(values[0].equals("capture")){
    cameraCapture();
  }else if(values[0].equals("quality")){
    cameraQuality(values[1].toInt());
  }else if(values[0].equals("request")){
    if(values[1].equals("length")){
      cameraGetLength();
    }else if(values[1].equals("buffer")){
      cameraGetBuffer(values[2].toInt(),values[3].toInt(),values[4].toInt(),values[5].toInt());
    }
  }else if(values[0].equals("baudrate")){
    cameraBaudrate(values[1].toInt());
  }
  buffer = "";
}
void cameraReset(){
  sw.write(0x56);
  sw.write((unsigned char)0x0);
  sw.write(0x26);
  sw.write((unsigned char)0x0);
}
void cameraClear(){
  sw.write(0x56);
  sw.write((unsigned char)0x0);
  sw.write(0x36);
  sw.write(0x01);
  sw.write(0x03);
}
void cameraResolution(unsigned char resolution){
  sw.write(0x56);
  sw.write((unsigned char)0x0);
  sw.write(0x31);
  sw.write(0x05);
  sw.write(0x04);
  sw.write(0x01);
  sw.write((unsigned char)0x00);
  sw.write(0x19);
  if(resolution==0){
    sw.write(0x11);
  }else if(resolution==1){
    sw.write((unsigned char)0x00);
  }else if(resolution==2){
    sw.write(0x22);
  }
}
void cameraQuality(unsigned char quality){
  sw.write(0x56);
  sw.write((unsigned char)0x0);
  sw.write(0x31);
  sw.write(0x05);
  sw.write(0x01);
  sw.write(0x01);
  sw.write(0x12);
  sw.write(0x04);
  sw.write(quality);
}
void cameraCapture(){
  sw.write(0x56);
  sw.write((unsigned char)0x0);
  sw.write(0x36);
  sw.write(0x01);
  sw.write((unsigned char)0x0);
}
void cameraGetLength(){
  sw.write(0x56);
  sw.write((unsigned char)0x0);
  sw.write(0x34);
  sw.write(0x01);
  sw.write((unsigned char)0x0);
}
void cameraGetBuffer(unsigned char s1, unsigned char s2, unsigned char e1, unsigned char e2){
  sw.write(0x56);
  sw.write((unsigned char)0x0);
  sw.write(0x32);
  sw.write(0x0C);
  sw.write((unsigned char)0x00);
  sw.write(0x0A);
  sw.write((unsigned char)0x00);
  sw.write((unsigned char)0x00);
  sw.write(s1);
  sw.write(s2);
  sw.write((unsigned char)0x00);
  sw.write((unsigned char)0x00);
  sw.write(e1);
  sw.write(e2);
  sw.write((unsigned char)0x00);
  sw.write(0xFF);
}
void cameraBaudrate(unsigned char baudrate){
  sw.write(0x56);
  sw.write((unsigned char)0x0);
  sw.write(0x31);
  sw.write(0x06);
  sw.write(0x04);
  sw.write(0x02);
  sw.write((unsigned char)0x00);
  sw.write(0x08);
  if(baudrate==0){
    sw.write(0xAE);
    sw.write(0xC8);//9600
  }else if(baudrate==1){
    sw.write(0x56);
    sw.write(0xE4);//19200
  }else if(baudrate==2){
    sw.write(0x2A);
    sw.write(0xF2);//38400
  }else if(baudrate==3){
    sw.write(0x1C);
    sw.write(0x4C);//57600
  }else if(baudrate==4){
    sw.write(0x0D);
    sw.write(0xA6);//115200
  }
}
void urlencode(String input)
{
  input.replace("/","%2F");
}
void urldecode(String input)
{
  input.replace("%2F","/");
}
########代碼########

順便提供一個開源的PC用戶端軟體採集圖像
installer_win.zip

​定時拍攝拼接的動畫效果：