Vojin

Trying to build audio trigger using LM386 Audio Amplifier...

I have this so far... and it's not working



What am I doing wrong?

Got it yesterday from eBay for $3.10CAN.
Spend an hour to wire it and it works like a charm



Now, I'm just waiting for shift registers to start bit more advanced projects

One more Extremely-Simple-Project

Design:


On the breadboard:


How it works:
http://www.youtube.com/watch?v=YG4yLwIarb4

Code:

using System;
using System.Threading;
using Microsoft.SPOT;
using Microsoft.SPOT.Hardware;
using SecretLabs.NETMF.Hardware;
using SecretLabs.NETMF.Hardware.Netduino;

namespace ShutterRelease
{
    public class Program
    {

        static Boolean status = false;

        public static void Main()
        {
            // write your code here

            OutputPort focus = new OutputPort(Pins.GPIO_PIN_D8, false);
            OutputPort shutter = new OutputPort(Pins.GPIO_PIN_D10, false);

            InterruptPort button = new InterruptPort(Pins.ONBOARD_SW1, false, Port.ResistorMode.Disabled, Port.InterruptMode.InterruptEdgeHigh);
            button.OnInterrupt += new NativeEventHandler(button_OnInterrupt);

            while (true)
            {
                if (status)
                {
                    focus.Write(true);
                    shutter.Write(true);
                    Thread.Sleep(10);
                    focus.Write(false);
                    shutter.Write(false);
                    Thread.Sleep(5000);
                }
            }

        }

        static void button_OnInterrupt(uint data1, uint data2, DateTime time)
        {
            status = !status;
        }

    }
}

I'm trying to build IR remote for my Sony DSLR A350.

Simple setup:


I have a LIRC file for IR Remote

begin remote

  name  Minolta_RC3
  bits            8
  flags SPACE_ENC
  eps            25
  aeps          100

  header       3872  1708
  one           527   436
  zero          527  1331
  ptrail        527
  pre_data_bits   24
  pre_data       0xD3AC7D
  gap          9052
  toggle_bit      0


      begin codes
          one_sec                  0x000000000000007F
          two_sec                  0x00000000000000FF
      end codes

end remote

The problem is that LIRC values are in microseconds and I cannot turn irLED on or off for less them 1 millisecond.
For example, bit "1" is LED on for 527 microseconds and then LED off for 436 microseconds:

irLED.Write(true);
Thread.Sleep(0.527);
irLED.Write(false);
Thread.Sleep(0.436);

This doesn't work because Thread.Sleep accepts [int]

Any idea how to wait for x microseconds?

Is there .NET Micro equivalent to Arduino's DelayMicroseconds (http://www.arduino.c...layMicroseconds)

Netduino traffic lights with
- Pedestrian priority button
- Pedestrian green light time left indicator
- Speaker for visually impaired pedestrians (PiezoSpeaker by James

Schema:



Build:



In action:

http://www.youtube.com/watch?v=snfWkRTfcjQ

It's my first project, so........