seeed studio Grove-Mini Camera User manual

Grove - Mini Camera
If you are searching a small size camera, perhaps, Grove-Mini Camera would be your best choice. It’s a
mini camera which can be controlled by Arduino. It has integrated image processing to generate 1280*720
JPEG image. The captured pictures are stored in SD card and you can read SD card information via USB
interface.
Features
Standard USB Interface and Grove Interface
High resolution
Tiny size and light weight
For all Grove users (especially beginners), we provide you guidance PDF documents. Please download and
read through Preface - Getting Started and Introduction to Grove before your using of the product.
Specification
Item Performance Parameter
CPU ARM9
Video Decode H.263 Accele
Video Format AVI
Video Encode MPEG4
Video Resolution 640*480
Video Frame Rate 30FPS
Run Software support AVI Player
Photo Format JPEG
Image Resolution 1280*720
Charge mode DC5V
Data Communication Interface 8Pin USB
Storage Medium Micro SD (Max 32G)

Demonstration
Different from general camera, Grove - Mini Camera can be controlled by Arduino/Seeeduino.
Now let's use the Grove - Mini camera to achieve this function: shoot a picture every time when someone
approaches.
To do it, we need a Grove - PIR Motion sensor which can spot any motion within a certain scope.
Let's start to make it:
Plug SD card into SD card socket, SD card is not included in this Grove and its size can't be larger than 32G.
Connect Grove - Mini Camera to D2 port of Grove - Base Shield, and Grove - PIR Montion Sensor to D5 port.
Plug Grove - Base Shield into Arduino/Seeeduino, then connect Arduino/Seeeduino to PC using a USB cable.
Open Arduino IDE, copy and paste the code below to a new sketch:
/*Using digital 2 to control Camera*/
/*Using digital 5 to receive sensor signal*/
#define KEY 2
#define PIR_MOTION_SENSOR 5
void setup()
{
Serial.begin(9600);
pinMode(KEY,OUTPUT);
pinMode(PIR_MOTION_SENSOR,INPUT);
delay(100);
enterStandbyMode();
makeVideo(5000);
}
void loop()
{
int sensorValue = digitalRead(PIR_MOTION_SENSOR);
if(sensorValue == HIGH) //when the sensor value is HIGH, someone is in here
{
takePicture();
delay(5000);

}
}
void takePicture(void)
{
digitalWrite(KEY,HIGH);
delay(1000);
digitalWrite(KEY,LOW);
delay(1000);
}
void enterStandbyMode(void)
{
//set the key pin as high level for 2s,enter the standby state
digitalWrite(KEY,HIGH);
delay(2000);
digitalWrite(KEY,LOW);
delay(1000);
}
void makeVideo(long int videoTime)
{
//set the key pin as high level for 2s again, from the standby state to video state
digitalWrite(KEY,HIGH);
delay(2000);
digitalWrite(KEY,LOW);
delay(videoTime); //make a video for videoTime.Its unit is ms.
// stop the video
digitalWrite(KEY,HIGH);
delay(1000);
digitalWrite(KEY,LOW);
delay(1000);
}
void PoweroffMode(void)
{
//set the key pin as high level for 5s,enter the poweroff state
digitalWrite(KEY,HIGH);
delay(5000);
digitalWrite(KEY,LOW);
delay(1000);
}
Upload the code. Please click here if you do not know how to upload.
Now there should be a video in the SD card because we call the function once during Setup(). To play the
video, you can either directly connect the camera to PC via USB cable or use a reader to read it. And if
somebody approaches when it's working, you should also find some pictures in the SD cards also.
Reference
Here is the state description of this mini camara. There are 5 working states.
1. Standby：Set key as high level for 2 seconds when in the power off state, Red LED will come on. Mini
camera enters Standby state.
2. Power off: Set key as high level for 5 seconds, camera enter Power off state, Red LED will fade out.
3. Take pictures: Set key as high level for about 1000ms when in the power on state, camera can take a
picture. Red LED will blink once to tell you that one picture has been taken. Afterwards, it automatically
enters standby state.
4. Video: Set key as high level for 2 seconds when in the standby state, Camera will enter video state and
red LED blinks continuously. To stop it, set key as high level for about 1000ms, camera will enter to
standby state.

5. Files storage: Connect camera to pc using USB cable, you can open image file and VIDEO file. You can
also access the files in the SD card by a SD card reader.