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Michel Trahan's Content
There have been 155 items by Michel Trahan (Search limited from 27-September 23)
#13407 How to pronounce "Netduino"?
Posted by Michel Trahan on 18 May 2011 - 12:09 PM in General Discussion
#13468 How to pronounce "Netduino"?
Posted by Michel Trahan on 20 May 2011 - 02:03 AM in General Discussion
I do come from Montreal, province of Quebec, Canada, and a pure bastard (Irish, French, Indian(12th generation lol), and Iberville as a ancestor) (with this mixture bastard was the only appropriate one lol) and I'm proud to beWhere are you come from Michel?...French Canada?
You should see my smile
And I do pronounce doo-ee-no exactly like dwee-no lol it's just a question of speed ?
#13250 How to manual read/write internal flash?
Posted by Michel Trahan on 13 May 2011 - 08:27 PM in Netduino Plus 2 (and Netduino Plus 1)
Yes, you'll have 4KB or more of storage space to store data. It only has 10,000 rewrite cycles for flash rewrites...so you won't want to rewrite it frequently...but it'll be awesome for configuration data.
Quite ! specially for very small remote sensors using the mini ! Configuration yes, daily values ... not really since 10,000 cycles (about 27 years if one per day)
And of course, Netduino Plus has MicroSD support...so you can store data there easily too.
Was thinking of the mini or normal ones
#13233 How to manual read/write internal flash?
Posted by Michel Trahan on 13 May 2011 - 02:42 PM in Netduino Plus 2 (and Netduino Plus 1)
Just to see that I understand : lets say you have a normal netduino with XBee but no SD card, you could send info to the netduino that would persist even after power recycling (like encryption key or remote ip address of neighbor sensor or ...) ? That could be interesting.NET MF 4.2 (beta coming by summer) includes a new "simple storage" mechanism for storing data on-chip. We'll be embracing this in the Netduino 4.2 firmware to enable you to read/write data from your Netduino app as well.
#12163 How to access hardware timers/counters?
Posted by Michel Trahan on 17 April 2011 - 05:26 AM in Netduino 2 (and Netduino 1)
And a tutorial on how to do that (documentation and sample code)perhaps what we need is a good way to launch native code routines off of timer interrupts?
I agree !It would be great if the three timer/counters in the Netduino ARM7 CPU were exposed ...
#11970 Honeywell HMC5843 3-Axis Digital Compass
Posted by Michel Trahan on 11 April 2011 - 10:54 PM in Project Showcase
Which I2CBus implementation are you using ... it refuses to compile due to missing ".Instance" ...
I2CBus i2cBus = I2CBus.Instance;
#12268 High Speed Photography
Posted by Michel Trahan on 20 April 2011 - 04:25 AM in General Discussion
#12580 High Speed Photography
Posted by Michel Trahan on 28 April 2011 - 01:20 PM in General Discussion
Hey, I bought a co-processor for one of those to make my galaxy creation simulation work in a week instead of a monthDid you remember the "ancient" PC-XT @ 4.77MHz, with 640K ram???
I'll have to learn about thoseHowever, there are many friends that don't know how to build even a simple circuit with a 555.
Yeap, that is me, simply learning .net in an interesting way (.net in all forms, normal, phone and MF, cool and having fun)Secondly, perhaps they are attracted by this board and would build a very simple application.
This is the goal of this experiment. Find out what works and what is missing, all for the ease of programming whatever we get our hands onThirdly, such a context is very useful because it shows clearly some lacks of a Netduino/MF board.
I'm looking at a 3D Printer right now and it is because I played with a netduino that I might have on in a few months
It is not a problem of our lack of knowledge about what to use when ... it is a question of finding out how we can adapt our tools to help even more
I Love This Community (ILTC)
#12582 Happy Birthday boobytrap
Posted by Michel Trahan on 28 April 2011 - 01:32 PM in Project Showcase
#12581 Happy Birthday boobytrap
Posted by Michel Trahan on 28 April 2011 - 01:30 PM in Project Showcase
How many netduino minis does that make ?If so, it's like throwing 300Eur in the can...
#12114 Getting Started Hardware
Posted by Michel Trahan on 14 April 2011 - 09:57 PM in General Discussion
a scope is a definite must ... It help me found out I was using the wrong item (mine has voltage so I discovered that I was sending peaks of +- 2V and I was using something needing 20V lol
Needless to say that I am a newbie and I want to build such a structured tutorial site. The sandbox is good but structure is missing for the right push ! The sandbox should be ready sooner than my site but I'll start asap !
#12174 General Structure for my Netduino Tutorials
Posted by Michel Trahan on 17 April 2011 - 03:25 PM in General Discussion
In about a month, I should put online my new site MichelTrahan.com and put many structured tutorials for the netduino on it.
When I say structured I mean that each and everyone of the tutorials will be backed by a Fritzing diagram, Full C# solution and complete documentation in both french and english (being in Quebec, this is mandatory).
Here is the global structure. Please comment if you see something missing or not appropriate. This is High Level.
Home
Curriculum
Readings
Best Shots
Netduino Tutorials
Introduction
.net MF and netduino
Board setup and configuration
Development tools
Inputs
Outpts
Storage (ND+, ND++)
Communication (ND+, ND++)
Power Supply (3.3V)
Beginners
Driving a simple LED
LED using PWM
Analog Temperature
Showing Temperature with a 7-Segment Display and one button (F or C)
Showing Temperature with a 4x20 LCD and 4 buttons (function, F or C, up down)
Showing Temperature Graphic History with a 600x200 Screen and 4 buttons again
Intermediate
Running a simple web server
Talking to ThingSpeak
Loggin it to SD Card
Loading code from an SD Card
... any other ideas ?
Widgets and Helper class
not there yet ... any ideas ?
Advance Topics
Writting native drivers (work for you Chris Walker!)
Full Fledge Projects
Robotics
Home Automation
Quadcopter (my own project, it should take a year and the ND Mega, read speadier)
------------------------
Basics
What's Needed
Pullup Resistors (Or Electronics Refresher (or tutorial for me lol) would be best)
Where to get things
Netduino Namespace Docs (automatically generated by sandcastle)
------------------------
Submitting Projects or Tutorials
Rules (Fritzing diagram, C# code, documentation)
Tools Needed (Fritzing, Inkscape, VS2010)
-----------------------
People, Groups and Sites
Forums
Have not decided on which structure to put here ... I love the netduino forum format (ip.board)
About
Contact Me
And top level buttons like :
Login
Register
Donate
And top level language selection on each page (Français/English), probably flags (France/US)
That is it !
Any suggestions or comments ?
#12177 General Structure for my Netduino Tutorials
Posted by Michel Trahan on 17 April 2011 - 06:08 PM in General Discussion
Consider it done I'll contact you when there First learning dotnetnuke ...add one on reading from a potentiometer.
Saw it, will be feeding on it for general ideas, thanks.getting started hardware guide on the wiki.
It will not be a place for it all, but a place to really start on a good basis, that is my goal !
#13203 Fancy a challenge - X Prize Tricorder
Posted by Michel Trahan on 12 May 2011 - 08:47 PM in General Discussion
#12051 Easy multiplexing with the Netduino
Posted by Michel Trahan on 13 April 2011 - 03:23 AM in Project Showcase
Great Tool, THANKS FOR SHARING (Sorry about the caps but this is exciting to me !)The schematics are made with the free tool Fritzing. Should also be mentioned since the tool is a great help!
#11528 Driverless PC<->Netduino communication using USB
Posted by Michel Trahan on 31 March 2011 - 05:36 PM in Beta Firmware and Drivers
#12542 Driverless PC<->Netduino communication using USB
Posted by Michel Trahan on 27 April 2011 - 09:33 PM in Beta Firmware and Drivers
#12579 Driverless PC<->Netduino communication using USB
Posted by Michel Trahan on 28 April 2011 - 12:52 PM in Beta Firmware and Drivers
Great News everyone, Terry Massey found a new way to get out of this mess. FOLLOW THIS PROCEDURE TO THE LETTER :You can also erase your Netduino using the erase pad...and then redeploy the bootloader using Atmel SAM-BA and the firmware using MFDeploy...all using USB.
Prepare everything since time is of the essence.
1- Have your netduino with the mini usb connected to it but not to the computer (leave the usb connection near the ports)
2- Start MFDeploy.exe, select USB as the transport (the combobox will be empty, and that is ok)
3- Put the mouse over the "erase" button on MFDeploy.exe
Once you are ready do this :
1- Press and hold the push button on the netduino for the whole procedure (leave it pushed at all times)
2- Plug the USB to the computer
3- You should see the combobox in MFDeploy.exe contain your usb port
4- Press as fast as you can the "erase" button on MFDeploy.exe
5- You can now release the push button on the netduino
If it worked, you should get a message asking if you are sure you want to erase the software on the netduino. This will only delete de software, not the bootloader
You can now deploy some other application while waiting for you RS232 shield and try the HID again
THANKS TERRY !
#12547 Driverless PC<->Netduino communication using USB
Posted by Michel Trahan on 28 April 2011 - 02:10 AM in Beta Firmware and Drivers
Should I install v4.1.1 beta firmware even if I only have an ordinary netduino ?You can also erase your Netduino using the erase pad...and then redeploy the bootloader using Atmel SAM-BA and the firmware using MFDeploy...all using USB.
#12592 Double prescision math lib?
Posted by Michel Trahan on 28 April 2011 - 03:35 PM in Netduino 2 (and Netduino 1)
To show the results on a PC ... live !But why do you thinking to a web server?
And the timestamp would mark the begining and end of the call on the netduino to the math function (for the netduino values).
The webserver would receive a function to test and a series of values to use. For each value to test the function with, a timestamp is used to calculate the number of ticks needed to execute it (some input values might take longer to calculate the output than others). It would reply with a table of data to display on the PC side by side the PC calculated equivalent sent to the netduino to compare
We could even show the values graphically (I do need to learn how to do that too, lol)
#12529 Double prescision math lib?
Posted by Michel Trahan on 27 April 2011 - 11:52 AM in Netduino 2 (and Netduino 1)
That was before I got a netduino It would be useful to have one ...I posted firmware builds of my math library to the forums. There seemed to be a huge lack of interest so I did not pursue it any further.
#12623 Double prescision math lib?
Posted by Michel Trahan on 28 April 2011 - 11:18 PM in Netduino 2 (and Netduino 1)
Normal Netduino for me ! Will need the Netduino plus to test it live with the webserver app that Mario put on the forums that I need to modify for this purpose (Thanks Mario)I will have to see if I can get a build cooked up for you. Which Netduino do you have?
#12594 Double prescision math lib?
Posted by Michel Trahan on 28 April 2011 - 03:57 PM in Netduino 2 (and Netduino 1)
I don't have a netduino plus yet nor do I have a ethernet shield but yes, this is exactly what I'm looking for as a frame for this mathematical tutorial ! That would be a great start ! I could probably do the missing code even without ethernet connection (using debug.print lol).At home I have a ready-to-use basis for Netduino Plus (SD+ETH needed) and Silverlight on PC.
The SL page polls the N+ every sec asking for data. The N+ web-server answers back to the page, finally the data is both graphically and tabled.
Is that what you are looking for?
YES ME WANT Please !
Put it in a new project showcase and I'll grab it from there ! Or in the wiki ? Your choice !
Boy do I love this community !
#12585 Double prescision math lib?
Posted by Michel Trahan on 28 April 2011 - 01:47 PM in Netduino 2 (and Netduino 1)
#12588 Double prescision math lib?
Posted by Michel Trahan on 28 April 2011 - 02:41 PM in Netduino 2 (and Netduino 1)
I propose to build a tutorial that would have a good side effect : show the differences between the math libraries on the netduino and the ones on the PC.Michel, I really can't understand what you are going to propose and for what target...
It would do many simple things :
1- show how to create a web server on the netduino (a sample already exist so we can use that)
2- show how to interact with that web server from a pc (the sample does already show that)
3- show the simplest form of table data display on the pc (i need to learn how to do that)
4- show how to timestamp data results to get processing time on the netduino and on the pc (I also need to learn that)
5- show what math functions are available on the netduino and
6- show the induced errors of those functions in certain input value ranges (needed when doing complex mathematical algorithm) on the netduino
7- show the time cost of using certain mathematical functions with certain input value ranges
Anyone interested in using the complex mathematical functions on the netduino should be made aware of the induced errors with certain input ranges of some functions and the time cost of using those functions in their netduino application.
That is the goal I want to attain. Inform of the errors and cost of each mathematical functions available on the netduino, and teach a thing or two while doing it (like tabular data display on the PC) !
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