Posted by bill.french on 01 December 2010 - 03:52 PM in Netduino 2 (and Netduino 1)

Posted by bill.french on 23 December 2010 - 02:24 PM in General Discussion

So, what to do in the interim. I liked the solution of the Anderson RS232/Onewire converter, but you know, how is that really different or much cheaper, than just buying a Arduino to use with the Netduino? But look at the beginner out there, the first thing he reads is he needs to go out and buy an Arduino, after he's made the choice to go with a Netduino !!

From what I've been reading, OneWire is actually really hard. The timings are very precise. Even the Adruino playground references Dr. Anderson's chip as an alternative that "reduces the workload inside the Arduino". Some sort of interrupt or other delay in the middle of it and you're sunk.

Although I might just be trying to justify my purchases to myself.

Posted by bill.french on 27 January 2011 - 01:26 PM in Netduino 2 (and Netduino 1)

Posted by bill.french on 09 January 2011 - 02:40 PM in General Discussion

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


namespace NDP_SocketSender1
{
    public class Program
    {
        public static void Main()
        {
       
            AnalogInput a5 = new AnalogInput(Pins.GPIO_PIN_A5);

            while (true)
            {
                string s = a5.Read().ToString();
                Debug.Print(s);
                Thread.Sleep(100);
            }
        }
    }
}

Posted by bill.french on 07 January 2011 - 03:53 PM in General Discussion

Posted by bill.french on 09 January 2011 - 05:01 PM in General Discussion

Posted by bill.french on 10 January 2011 - 12:59 PM in General Discussion

Posted by bill.french on 11 January 2011 - 04:03 PM in General Discussion

Posted by bill.french on 11 January 2011 - 02:07 PM in General Discussion

Posted by bill.french on 24 December 2010 - 07:12 PM in Beta Firmware and Drivers

Posted by bill.french on 09 January 2011 - 06:32 PM in General Discussion

int i = a5.read();
if (i > 20)
{
// do whatever
}

Posted by bill.french on 24 December 2010 - 08:28 PM in Beta Firmware and Drivers

Posted by bill.french on 09 January 2011 - 01:46 PM in Netduino Plus 2 (and Netduino Plus 1)

Posted by bill.french on 17 November 2010 - 04:22 PM in General Discussion

Posted by bill.french on 30 October 2010 - 12:37 AM in General Discussion

Posted by bill.french on 29 December 2010 - 08:04 PM in General Discussion

Posted by bill.french on 29 October 2010 - 11:04 PM in General Discussion

Posted by bill.french on 06 December 2010 - 02:58 AM in Netduino 2 (and Netduino 1)

Posted by bill.french on 07 December 2010 - 08:23 PM in Netduino Plus 2 (and Netduino Plus 1)

Posted by bill.french on 10 December 2010 - 02:02 AM in Netduino 2 (and Netduino 1)

Posted by bill.french on 02 January 2011 - 05:52 AM in Project Showcase

Starting with Fritzing and using the toner transfer method, I've gotten my sous vide project a lot more physically solid on its own PCB. I've also added some headers for an LCD screen and buttons for the future.

In case it inspires someone to try etching their own boards, here are some pics:

1. Breadboard in Fritzing:


2. PCB in Fritzing:


3. PCB with toner, pre-etching, with some sharpie touch-ups (this is actually an older layout, but I forgot to take pics of the new layout)


4. Etched and tinned:


5. IC Side of the board:

Posted by bill.french on 02 January 2011 - 03:30 PM in Project Showcase

Posted by bill.french on 10 December 2010 - 03:01 AM in Netduino 2 (and Netduino 1)

        public static byte[] GetByteArray(string s)
        {
            return System.Text.Encoding.UTF8.GetBytes(s);
        }
        public static byte GetByteFromHex(string s)
        {
            return GetByteFromHex(GetByteArray(s));
        }
        public static byte GetByteFromHex(byte[] ba)
        {
            return (byte)((((ba[0] > 96) ? ba[0] - 87 : ba[0] - 48) * 16) + ((ba[1] > 96) ? ba[1] - 87 : ba[1] - 48));
        }

Posted by bill.french on 29 September 2010 - 01:00 AM in Netduino Plus 2 (and Netduino Plus 1)

Posted by bill.french on 09 December 2010 - 02:34 AM in Netduino Plus 2 (and Netduino Plus 1)

$query="insert into tablename values('.$url1', '".$url2"', '".$url3"');";

I can't help but mention the risk of sql injection attacks -- unless i'm misunderstanding how php works, this appears ripe for that sort of exploit. Not that there's much risk when messing around with a netduino, i think establishing good habits regarding injection attacks early on before bad habits take hold are really important.

Here's some info in regards to php:
http://stackoverflow...njection-in-php

... and my favorite sql injection attack: