3 replies to this topic

[Shivaram K R]

I am sharing my C# code for Netduino 2 here. The project uses Ultrasonic distance sensor (HC-SR04) with 8x8 LED matrix (available in Adafruit store http://www.adafruit.com/products/872 ). When the object is close the whole LED matrix is ON, when the object moves far away the number of LEDs which are ON reduces. It also generates sound based on the proximity of the object.

 

Pin 5: SONAR trigger,

Pin 0: SONAR Echo

Pin 6: Speaker

SCL: LED Matrix clock 

SDL: LED Matrix data

make VCC and Gnd connections to +5V and GND

 

 

Run this program in the file attached.

 

I will be writing cleaner library with classes etc later. Any suggestion to improve the efficiency of the code is welcome.

Attached Files

•  Program.cs   4.19KB   31 downloads

[NooM]

well, you should use a multi i2c class, its makes it look way nicer.

 

also:

byte[] data = new byte[bufferSize];
  data[0] = 0x00; // Going to starting address

  for (uint i = 1; i < bufferSize; i += 2)
  {
  data[i] = 0x00;
  data[i + 1] = 0x00;
  }

 

isent needed

 

byte[] data = new byte[bufferSize];

sets every item in the array to 0x00 allready

 

than:

PWM trig = new PWM(Cpu.PWMChannel.PWM_0,60000,10, PWM.ScaleFactor.Microseconds, false);

dont use Cpu.whatever.

its PWMChannels.yourpin

 

another suggestion: dont use static all the time.

http://pastebin.com/9BBHnWA3 > anti static

[Shivaram K R]

Thank you  , Yes I need to use a class instead of using everything in Main...

 

well, you should use a multi i2c class, its makes it look way nicer.

 

also:

byte[] data = new byte[bufferSize];
  data[0] = 0x00; // Going to starting address

  for (uint i = 1; i < bufferSize; i += 2)
  {
  data[i] = 0x00;
  data[i + 1] = 0x00;
  }

 

isent needed

 

byte[] data = new byte[bufferSize];

sets every item in the array to 0x00 allready

 

than:

PWM trig = new PWM(Cpu.PWMChannel.PWM_0,60000,10, PWM.ScaleFactor.Microseconds, false);

dont use Cpu.whatever.

its PWMChannels.yourpin

 

another suggestion: dont use static all the time.

http://pastebin.com/9BBHnWA3 > anti static

[Paul Newton]

I am sharing my C# code for Netduino 2 here.

 

 

 

Welcome to the Forums!

Sharing is what makes this a great place to be.

Paul