Jim Davies's Content

#10257 Wild idea for a group project

Posted by Jim Davies on 26 February 2011 - 02:57 PM in General Discussion

In an effort to kickstart this and keep it simple, may I suggest we use a channel on ThingSpeak (www.thingspeak.com )?

I heard from ThingSpeak that it will remain free, by the way, so maybe that would help?

Jim

#7496 Visual Studio Toolbox Error

Posted by Jim Davies on 12 January 2011 - 08:34 AM in Visual Studio

It would help to know if these are isolated incidents, or does -everyone- get this if they try adding to the VS2010 Toolbox after installing the NETMF 4.1 SDK? Jim

#7449 Visual Studio Toolbox Error

Posted by Jim Davies on 11 January 2011 - 11:17 AM in Visual Studio

In case it helps someone...

The installation of NETMF 4.1 SDK seems to prevent some users adding items to the VS2010 Toolbox. In my case I was trying to install the WPF Toolkit, but other reports mention other Toolbox additions.

There's a thread at:

Visual Studio Toolbox Error

Jim

#8663 Very short delays, less than 1ms

Posted by Jim Davies on 29 January 2011 - 01:04 PM in Netduino 2 (and Netduino 1)

(my original reply was bad - deleted) Anyone got anywhere with this? Jim

#6161 USB Interface – Need High Speed Device Support

Posted by Jim Davies on 16 December 2010 - 08:05 PM in General Discussion

Dear Protobuilder, I wonder if this is a data acquisition device, e.g. a fast ADC? You want to connect your device to a PC program, but I'm not sure you're in the right place. Normally manufacturers of USB DAQ boards and similar devices supply their own specialised USB drivers and libraries for popular PC programming languages, and the USB device would be connected directly to the PC. Examples include Data Translation (www.datx.com), IOtech (www.iotech.com), Measurement Computing etc. Could you some more about your device / application please? Regards, Jim

#6208 USB Interface – Need High Speed Device Support

Posted by Jim Davies on 18 December 2010 - 10:56 AM in General Discussion

No, please don't apologize for anything - I just wanted to check 'where you are'. I hope some people can give you pointers, and I'm sure they would be of general interest and help to strengthen the netduino's portfolio of applications. Best, Jim

#6152 Two applicable articles

Posted by Jim Davies on 16 December 2010 - 03:37 PM in General Discussion

Interesting articles - Thanks Frank! Jim

#10256 ThingSpeak are open

Posted by Jim Davies on 26 February 2011 - 02:54 PM in General Discussion

I've heard from ThingSpeak that it will remain free, by the way - excellent news! Jim

#9626 ThingSpeak are open

Posted by Jim Davies on 16 February 2011 - 08:51 AM in General Discussion

ThingSpeak have announced they're now open:

www.thingspeak.com

Open Internet of Things Project - Give your things a voice

They join the likes of Pachube in offering a place for data from 'net-connected things' to reside, so other devices / systems can read from them.

Jim

#6834 Suggestions, guidance,help

Posted by Jim Davies on 02 January 2011 - 04:08 PM in General Discussion

Hi Frank, I guess you could also implement a web server in your N+ using an HttpListener, and then use an HTML <iframe> on your main web site to show the value(s). Jim

#6793 Suggestions, guidance,help

Posted by Jim Davies on 01 January 2011 - 06:48 PM in General Discussion

Happy New Netduino Year, Frank! You may find that you need a server on the web site, storing values in a file or database. You would ideally do an HTTP POST to the site with your new value(s), a process running there would store away the value(s), and visitors can then view present and/or past values on web pages setup for that purpose (which retrieve the value(s) from file or database). It's not quite as simple as you were imagining - however there are one or two sites that might make it easier, e.g. www.pachube.com, if you haven't come across it? Best, Jim

#6894 Suggestions, guidance,help

Posted by Jim Davies on 03 January 2011 - 09:49 AM in General Discussion

Mark - But maybe Frank wants other people to see the value - so different Sessions? Frank - How's GS #3 ?? Jim

#6085 Special Netduino Pluses on sale.

Posted by Jim Davies on 14 December 2010 - 06:10 PM in Netduino Plus 2 (and Netduino Plus 1)

WannaFly:

Check out This upcoming book

Jim

#6276 Save Custom Settings

Posted by Jim Davies on 20 December 2010 - 09:24 AM in General Discussion

+1 for Option 3 please.

#8061 Resellers in Europe

Posted by Jim Davies on 21 January 2011 - 02:50 PM in Netduino 2 (and Netduino 1)

In the UK:

Cool Components

(but they don't have N+ at the moment).

#11070 Recommend a scope or PC card for working with Netduino?

Posted by Jim Davies on 18 March 2011 - 09:43 AM in General Discussion

I also got a Rigol DS1052E oscilloscope - very happy with it.

Or how about a 40kHz 2-Ch DIP-Size Mixed Signal Scope for $49?

Jim

#11158 Recommend a scope or PC card for working with Netduino?

Posted by Jim Davies on 21 March 2011 - 03:08 PM in General Discussion

Or get the same thing directly from the designer for $35
http://www.gabotroni...a-xprotolab.htm

Thanks Luke - wow!

#5969 Pyxis 2.0

Posted by Jim Davies on 10 December 2010 - 12:02 PM in General Discussion

Wow - makes the old blinking LEDs look a bit tame!

Thanks Jonny.

windowsuino ???

I guess this would run fine on a GHI EMX Dev Board ?

#9832 Pachube client for NetduinoPlus

Posted by Jim Davies on 19 February 2011 - 12:10 PM in Project Showcase

Hi Zerov,

Are there any other similar services like Pachube? It's a fantastic idea, but it's a bit to expensive. If I want to monitor my whole house and keep a infinite history, $99 is to much for me.

ThingSpeak looks promising, but I don't see anything about costs yet!
Also, check out sen.se

Jim

#8457 Pachube and similar

Posted by Jim Davies on 26 January 2011 - 12:20 PM in General Discussion

Folks interested in the Internet of Things ideas might be interested in this (I'm not connected!):

Title: Pachube nominated for "Best 'internet of things' application" BE2Award

We are proud to announce that Pachube [1] has been nominated for the "Best 'internet of things' application" BE2Award [2]! Voting is open to the public and closes at midnight GMT, 7 February 2011.

Quote:
>"The best 'internet of things' application looks at technologies which are >able to extract data from buildings, environments and objects and deliver >related information to us, and which allow us to interact with those >'things'.

What do you think - Pachube [3] does that pretty well, no?

We are in good company, too, with IoT friends like Adrian McEwen [4] and sen.se [5].

Please visit http://be2awards.com...of-things-appl/
[6] to cast your votes.

[1] http://www.pachube.com/
[2] http://be2awards.com...of-things-appl/
[3] http://www.pachube.com/
[4] http://www.mcqn.com/
[5] http://open.sen.se/
[6] http://be2awards.com...of-things-appl/

http://community.pachube.com/node/587

#7500 Newbie on buttons & pull-up resistor

Posted by Jim Davies on 12 January 2011 - 09:23 AM in Netduino 2 (and Netduino 1)

Hi Ken,

You're probably seeing contact bounce on your buttons. You can either debounce in software or add a small capacitor from each digital input to ground, to 'smooth' the signal a bit. Also, have you tried the 3.3V instead of the 5V - might make a difference?

See for example:

Interrupting

Also try searching for 'glitch' or 'bounce' in the Forums search box.

Jim