Spammy786

Hi Guys

I am trying to read the values from my potentiometer. I got it working but the output is not really what I was expecting.

Firstly I dont understand the concept of the channels. 

Like for example, you physically connect something to PIN 0, but instead of choosing PIN 0, you have to select Cpu.AnalogChannel.ANALOG_0.

Is there any user friendly documentation on this, but anyways back to my problem.

I was using some snippnets from 1 of the posts I found in the netduino forums, basically the guy was just reading values from the potentiometer. I would like to do the same. heres the potentiometer I have

http://netram.co.za/...entiometer.html

But this guy was setting a range in his example. (pot.setrange(0,100)) I dont have those options. and I just want round numbers and not decimals. I just want to read values from 0-100 also in my example. Heres my code. I does output the values but it starts like 1 2 3 then back to 1 2 3 and then if you turn it slightly, it jumps all the way to 202. 

Only options I have for the AnalogInput is the following and what do they mean ? I have no clue.

It basically needs to be refine and optimized. Any ideas

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 NetduinoPotTester
{
    public class Program
    {
        public static void Main()
        {
            AnalogInput pot = new AnalogInput(Cpu.AnalogChannel.ANALOG_0);
            while (true)
            {
                int potValue = 0;
                potValue = pot.ReadRaw();
                Debug.Print(potValue.ToString());
            }
        }

    }
}

Thanks guys.

Hi

I have a problem with my netduino plus 2, I deployed some code to the device that broke it, so I found the problem and fixed the code but my problem is, Visual studio cant deploy because windows kicks the netduino out.

When I plug the netduino in and MF Depoly tool to erase it, USB is chosen and it picks it up, but when I click erase, it displays another dialog, asking me which sector to erase (I done the process before and it works fine) when I click erase, Windows pops up a message on the taskbar stating (USB device plugged into might not be working correctly) when it popus up that message, MF Deploy says it cannot detect my netduino.

If that windows popup didn't appear, I could have erased the programmed and deployed the new one.

I have included the screenshots.

How can I fix this?

Thanks

Hi Guys

My requirement is simple and short, Basically I want to my desktop application to automatically detect when my netduino plus 2 is plugged into the usb port of the computer, once its plugged in, I want to have access to the SD card on my netduino. I can create the winforms application but whats the best way to access the SD card from the netudino, I want to get 2 textfiles from the SD card and after that I want to send 2 textfiles to the SD Card.

Anybody have some sample code or the best way forward.

Please note I can create the winforms application, Just need help with accessing the SD card in the netduino.

Thanks in advance guys.

Hi Guys

I am connecting my serial rs232 device to the netduino plus 2, D0 and D1 and GND. The device is a card reader. All it does is just returns the tag code from the card that's presented to it. Basically when I present a card. It is returning the following output :

1

1

1

1

1

1

1

It supposed to return the tag code for example #234765732476824

The code is very small so I cant seem to find out where I am going wrong, Thanks in advance guys

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 SerialPortTest
{
    public class Program
    {

        static SerialPort serial;

        public static void Main()
        {
            serial = new SerialPort(SerialPorts.COM1, 9600, Parity.None, 8, StopBits.One);
            //serial.Handshake = Handshake.None;
            serial.ReadTimeout = 500;

            serial.Open();
            serial.DataReceived += new SerialDataReceivedEventHandler(serial_DataReceived);

            Thread.Sleep(Timeout.Infinite);
        }

        static void serial_DataReceived(object sender, SerialDataReceivedEventArgs e)
        {
            String response = "";
            byte[] bytes = new byte[1];
            while (serial.BytesToRead > 0)
            {
               response += serial.Read(bytes, 0, bytes.Length);
            }
            Debug.Print(response);
        }
    }
}