Hi Dave,

I have changed the output type, and it exit the program by itself immediately. The Main() method is suppose to comment out or uncomment?

If i comment out, there is an error saying does not contain static Main. If i uncomment, it exit the program.

Hi,

I need help here.. I am now doing a project for drum using piezo & led.. I have been researching for it for almost a week, but the results seem to be only for Arduino Uno. I could not find any help on the codes for Netduino Plus 2. Is there any codes that is similar to this project?

Hi..

I need help here! I am doing a project for drum with led lights up upon hit the piezo. Can arduino codes be used for netduino plus 2? Researching since just now and the results are all for arduino uno.

Hi.. Thanks for the quick reply.. I did not set any frequency on it.

Here are my codes..

Hi zee, The code looks fine at first glance. Let's check out the other variables... What board are you using? Netduino? Netduino Plus 2? When you open up project properties, and then go to the .NET MF tab...do you see your Netduino in the device pulldown? When deployment fails, go to the Output tab in Visual Studio. If it shows more information about what failed during deployment, please post that info here. Chris

Hi Chris,

Thanx for the response..

I am using Netduino Plus 2.. Yes, there is Netduino in the device pulldown.. 

The error in the output tab, stated "Unable to communicate with device - USB:Netduino"..

Hi,

This is my second time try to run this project. Its from the 'Getting Started with Netduino' on Chapter 6, Dimmer Code..I have installed the SecretLabs.NETMF.Hardware.PWM and there is no error in the code. However, when it is running, it states that "unable to communicate with device - USB:Netduino" under the output tab.

There is also a message box pop-up "There were deployment errors. Continue?".

Please help me !!! Thank you!

I think the Queue class is found within the the System.Collections namespace, so try changing from just new Queue() to new System.Collections.Queue() or probably better to simply add this statement in the beginning of Program.cs

 

using System.Collections; 

 

You might also want to look at this post also covering an RTTL player:

 

http://forums.netdui...sed-controller/

Yes yes.. It works! Thank you Hanzibal 

Hi,

I am currently doing a project on ringtone player. This code we found on http://dev-bin.com/2...e-player-rtttl/ .. Hence we decided to try it out and we found an error in Program.cs. We try to solve it by refer to the reference on the link but it did not seem to work.

static Queue SongQueue = new Queue();

PS: Need your help as soon as possible because our deadline is in 2 more days. URGENTTTT!!!     

Thanx..

Oh. Thanx Hanzibal. Will try to work it out. 

Hi,

Thank for the quick response. You mean, touch shield can't be used for password? In order for me to use a servo to do some actions, I need to use something like this?

 http://www.karlssonr...CFVSVMgodv04AEw

or

https://www.sparkfun.../products/10250

I'm sorry for this noob question. But, what else can touch shield do?

Hi,

Has anyone tried to do a project on touch shield with servo? It is to set a correct password on the touch shield and servo will turn it if the button been pressed correctly. 

I did followed the codes from http://forums.netdui...=+touch +shield and I am using the same product https://www.sparkfun.../products/10508

I still could not understand of how and where to insert the code for setting password and connect together with servo (if possible).

Hi,

Need help here!

What's the problem here?   

Connected to 10K Ohm & PullUp.. But it keep prompts me this error.

Hi zee, Your button class isn't being used in your main program, so the button is acting as a software reset button (its default state). Chris

Hi Chris,

But it works as it stopped the song and continue it automatically after few seconds. Could you guide me how should i put the Button class in Program.cs? Is it supposed to be in 2 different classes as shown above or all in one class?

Program.cs 

 

 

using System;

using System.Net;

using System.Net.Sockets;

using System.Threading;

using Microsoft.SPOT;

using Microsoft.SPOT.Hardware;

using SecretLabs.NETMF.Hardware;

using SecretLabs.NETMF.Hardware.Netduino;

using System.IO.Ports;

using System.Text;

 

namespace PushButton_OutputMusic

{

    public class Program

    {

        private static SecretLabs.NETMF.Hardware.PWM speaker = new SecretLabs.NETMF.Hardware.PWM(Pins.GPIO_PIN_D5);

 

        static System.Collections.Hashtable scale = new System.Collections.Hashtable();

 

        public static void Main()

        {

 

            while (true)

            {

                GetSound();

             

            }

        }

 

        private static void GetSound()

        {

             

            //low octave

            scale.Add("c", 1915u);

            scale.Add("d", 1700u);

            scale.Add("e", 1519u);

            scale.Add("f", 1432u);

            scale.Add("g", 1275u);

            scale.Add("a", 1136u);

            scale.Add("b", 1014u);

 

            // high octave

            scale.Add("C", 956u);

            scale.Add("D", 851u);

            scale.Add("E", 758u);

            scale.Add("F", 191u);

            scale.Add("G", 170u);

            scale.Add("A", 153u);

            scale.Add("B", 136u);

            scale.Add("C2", 127u);

 

            // silence ("hold note")

            scale.Add("h", 0u);

 

            int beatsPerMinute = 90;

            int beatTimeInMilliseconds = 60000 / beatsPerMinute; //60,000 milliseconds per minute

            int pauseTimeInMilliseconds = (int)(beatTimeInMilliseconds * 0.1);

 

            string song = "C1C1C1g1a1a1g2E1E1D1D1C2h"; //old macdonald

            song += "C1C1G1G1A1A1G2F1F1E1E1D1D1C2h"; //twinkle little star

 

            while (true)

            {

 

                for (int i = 0; i < song.Length; i += 2)

                {

                    //song loop

 

                    string note = song.Substring(i, 1); 

                    int beatCount = int.Parse(song.Substring(i + 1, 1)); 

 

                    uint noteDuration = (uint)scale[note];

 

                    speaker.SetPulse(noteDuration * 2, noteDuration); 

 

                    Thread.Sleep(beatTimeInMilliseconds * beatCount - pauseTimeInMilliseconds);

 

                    speaker.SetDutyCycle(0); //set to 0, turn the piezo off momentarily

                    Thread.Sleep(pauseTimeInMilliseconds);

 

                } 

 

               Thread.Sleep(1000);

 

            }

        }

 

     

    }

}

Next, Button.cs

using System;

using System.Net;

using System.Net.Sockets;

using System.Threading;

using Microsoft.SPOT;

using Microsoft.SPOT.Hardware;

using SecretLabs.NETMF.Hardware;

using SecretLabs.NETMF.Hardware.Netduino;

 

namespace PushButton_OutputMusic

{

    class Button

    {

        InterruptPort button;

        OutputPort led;

        bool ledState;

 

        public void buttonToggle()

        {

        ledState = true;

 

            led = new OutputPort(Pins.ONBOARD_LED, ledState);

            button = new InterruptPort(Pins.ONBOARD_SW1, false, Port.ResistorMode.Disabled, Port.InterruptMode.InterruptEdgeLow);

 

            //bind the interrupt handler to the pin's interrupt event

            button.OnInterrupt += new NativeEventHandler(SwitchInterruptHandler);

 

            while (true)

            {

 

                Thread.Sleep(Timeout.Infinite);

             

            } 

        }

 

        public void SwitchInterruptHandler(UInt32 data1, UInt32 data2, DateTime time)

        {

 

            button.DisableInterrupt();

 

            //invert the previous state of the LED

            ledState = !ledState; 

 

            //set the LED to its new state

            led.Write(ledState);

 

            button.EnableInterrupt();

        }

    }

}

Is this correct? The song auto play after i deploy. Then i pressed the button, the song stop and it starts automatically in few seconds. My objective is to make the song start and stop when pressing the button on Netduino..

Put your song code in a separate thread.  Start and stop the thread using the button toggle code.

Hi Dave,

You mind explain to me the steps? I am soooo noob in this netduino. Really new to me. Is it add new class or add new project?

I did tried to add both, but received few errors. Putting them in a different project, no errors but how to link? Add class, received lots of errors.

Appreciate your help

Hi Dab,

Is there any way that piezo speaker can be on/off too upon pressing the toggle button? I have a project to do, where song will be play through piezo if the button is been press & led on, and the song will be stop when the button been press again & led off.

Problem solved !       

One of the jumper is faulty. HAHA!

I don't fully understand what you mean by "from shield board TX to resistor (with SDA) to D2" though?

 Ignore this. Haha!

I did found the solution Last Friday and when i want to try again today, seems like its not working. Whats happening??   

This should be correct right?

readonly InterruptPort irqpin = new InterruptPort(Pins.GPIO_PIN_D2, true, ResistorModes.PullUp, Port.InterruptMode.InterruptEdgeLow);

Both resistors are connectec to 5V. 1 resistor will wired up to SDA and the other resistor to SCL. And, InterruptPort is directly connected from touch shield to D2. Right?

Hi,

I am doing on a project for home security. I decided to add in the touch shield https://www.sparkfun.../products/10508. I am sure the codes are all correct as when i run it, there is no error. But i am curious about my wiring. Unsure if it is correct or wrong.

Btw, i am using Netduino Plus 2

Hi Paolo,

Just to clarify, to do a project on ultrasonic for distance measurement, is it a must to have this library? If yes, i encountered this errors and need your help. Thanx..

I tried to install the package but it show me this errors:

PM> Install-Package uPLibrary

Install-Package : The current environment doesn't have a solution open.

At line:1 char:16

+ Install-Package <<<<  uPLibrary

    + CategoryInfo          : InvalidOperation: ( [Install-Package], InvalidOperationException

    + FullyQualifiedErrorId : NuGetNoActiveSolution,NuGet.PowerShell.Commands.InstallPackageCommand

 

 

P.S.

Here's some very rough test code I put together to make sure we were getting data from the GPS receiver. You might want to put this in an event handler-based class which parsed the data out and raised events whenever a new location was received.

But this will show you your GPS data stream I've put a 100ms delay in between each iteration of the loop so that we're not getting and printing one byte of data at a time.

I plugged TX, RX, and PWR into pins D0, D1, and D2. This corresponds to serial port 1 (COM1) and a "powerpin" of D2.
 

using System;using System.IO.Ports;using System.Threading;using Microsoft.SPOT;using Microsoft.SPOT.Hardware;using SecretLabs.NETMF.Hardware;using SecretLabs.NETMF.Hardware.Netduino;namespace GpsLogger{    public class Program    {        public static void Main()        {            // write your code here            SerialPort serialPort = new SerialPort("COM1", 4800, Parity.None, 8, StopBits.One);            serialPort.Open();            // pin D2 off = gps module turned on            OutputPort powerPin = new OutputPort(Pins.GPIO_PIN_D2, false);            while (true)            {                int bytesToRead = serialPort.BytesToRead;                if (bytesToRead > 0)                {                    // get the waiting data                    byte[] buffer = new byte[bytesToRead];                    serialPort.Read(buffer, 0, buffer.Length);                    // print out our received data                    Debug.Print(new String(System.Text.Encoding.UTF8.GetChars(buffer)));                }                Thread.Sleep(100); // wait a bit so we get a few bytes at a time...            }        }    }}

Hi Chris,

May i know what will be the output like?

There's no error but im just wondering how will the output like?

Sorry for my noob question. Im soooo new to this sensor device..