่MIT inventor appilcation lesson 1 connect your camera

PC

1. submit gmail.com   .
2. go to MIT inventor application.:    http://appinventor.mit.edu/explore/
3. Create app!!





Mobile

1. Load MIT AI2 Companion from Google paly

Arduino NANO+BD139 NPN Transistor+Speed control

Click for Detail BD139 คลิ้กดูรายละเอียด BD139

credit:  www.likecircuit.com

คลิ้กดูรายละเอียด Arduino NANO ได้เลย

Analog in

PWM pin out

Code

int BD139_Pin = 5;      // LED connected to digital pin 9

int analogPin = A3;   // potentiometer connected to analog pin 3

int val = 0;         // variable to store the read value

void setup()

{

   Serial.begin(9600);

  // Serial.println("CLEARDATA");

  pinMode(BD139_Pin, OUTPUT);   // sets the pin as output

}

void loop()

{

  val = analogRead(analogPin);   // read the input pin

  val=val/4;

  analogWrite(BD139_Pin, val);  // analogRead values go from 0 to 1023, analogWrite values from 0 to 255

// Serial.print("DATA,TIME,");

Serial.println(val);

delay(100);

}