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There have been 70 items by JonnyBoats (Search limited from 08-June 23)
#20659 simple put to localhost confusing
Posted by JonnyBoats on 15 November 2011 - 07:28 PM in Netduino Plus 2 (and Netduino Plus 1)
#28504 Slider module
Posted by JonnyBoats on 03 May 2012 - 06:51 PM in Netduino Go
I also wrote a blog post for slider module.
#21172 Phony Scope
Posted by JonnyBoats on 30 November 2011 - 04:58 PM in Project Showcase
The code is far from 'perfect' but seems to work OK. There is one known issue. On rare occasions, the message string sent to the Netduino for setting the PWM has missing data. The Netduino will return a message informing you of the problem. To be blunt, I have no idea why, but at least it does not happen very often. I live near the BIG Chicago airport and I have issues with electronic items in the home at times. I 'think' it is from aircraft transmissions of some sort. Anyway, a plane is usually flying over and then have strange thing happen around here. Like hear voices on the TV and FM radio.
The usual way to handle situations like this, (namely sending data over noisy communications channels where the message can be garbled) is to include a checksum ( http://en.wikipedia.org/wiki/Checksum) with the message.
Basicly the sender computes the checksum and includes it with the message. The receiver then gets the message and re-computes the checksum to confirm that the computed value matches the checkum received. If they do not then the receiver knows the message has been corrupted and treats it accordingly. (One standard practice is to simply ask the sender to re-send the message).
This may or may not be overkill for your purposes.
#20416 Networking fails to recover from unreachable hosts.
Posted by JonnyBoats on 09 November 2011 - 03:54 PM in Netduino Plus 2 (and Netduino Plus 1)
#15765 Accelerometers and how to use them.
Posted by JonnyBoats on 21 July 2011 - 11:08 PM in Netduino 2 (and Netduino 1)
#20425 IBM's "internet of things" protocol - PAHO
Posted by JonnyBoats on 09 November 2011 - 07:38 PM in General Discussion
See:
http://www.adafruit....hings-protocol/
&
http://www.pcworld.c...ed_devices.html
This looks like a good way to get Netduinos communicating, has anyone used this Paho protocol?
#26484 Links to documentation on al modules?
Posted by JonnyBoats on 04 April 2012 - 11:39 PM in Netduino Go
#19176 RTM of the .NET Micro Framework version 4.2.
Posted by JonnyBoats on 14 October 2011 - 02:04 PM in General Discussion
few months ago I mentioned that the next version of the .Net Micro Framework, v4.2, was in beta, Netduino is opening up to an wider audience with the .Net Micro Framework v4.2 release.
Well it's beta no more!
Version 4.2 RTM Today!! (Updated)
We are glad to announce today the RTM of the .NET Micro Framework version 4.2. You can download the SDK and PK as well as the all sources from our Codeplex project, client_v4_2 branch, at change number 13620. (We will be distributing 4.2 solely through the Codeplex site this time and not on downloads.microsoft.com)
Version 4.2 of the .NET Micro Framework Porting Kit provides the following new features:
Remote Firmware Update: The .NET Micro Framework SDK and PK now support updating your device firmware remotely.
Complete Cryptographic Object Model over PCKS #11: Most types and algorithms used in the desktop framework are now supported. PKCS #11 allows extensibility at the firmware level for adding new cryptographic tokens.
1-Wire, PWM and A/D object model: Support for PWM and A/D operations is now provided as a standard interface. 1-Wire is provided through a community development effort
SNTP and FTP (client and server): Support for SNTP and FTP is provided as a community development effort.
StringBuilder and Regex types: Support for StringBuilder and Regex is provided as a community development effort.
Transcendental functions for doubles in System.Math
VB.NET: The SDK now support VB.NET.
Support for Cortex M3 devices with STM32 processor family samples: The support for the STM32 family is provided as a community development effort and features two solutions for two different development boards. See the Porting Kit for details.
PKStudio: PKStudio supplements SolutionWizard to create solutions for the Porting Kit environment. See the Porting Kit distribution for details. (PKStudio code can be in the community branch under %SPOCLIENT%\CLR\Tools\PlatformDesigner\PKStudio and the binaries are instead in the %SPOCLIENT%\Tools\bin\PKStudio directory ready to use)
...
You can find white papers about crypto, firmware updates, and the Codeplex distribution in general on the documentation page of the project. You can find the general documentation on MSDN. PK documentation is in the distribution, under the documentation directory (you will find there also the full .chm help
#18259 Noobs guide to connecting parts to a Netduino
Posted by JonnyBoats on 20 September 2011 - 05:28 PM in General Discussion
It is not Netduino specific, but would work with any microcontroller.
One caution, in his examples he often shows the voltage level as 5 volts, which would be fine for an Arduino or many other microtrollers. The Netduino is a Netduino is a 3.3 volt device so just replace 5 V with 3.3V in his drawings.
He describe how to:
Light an LED from a Digital Output
Read Switch Contacts with a Digital Input
Read a Digital Signal that Goes from 0 V (LOW) to 10 V (HIGH)
Read (with Opto-Isolation) A Digital Signal
Measure a DC Voltage Between 0 V and 15 V
Measure a DC Voltage Between -15 V and 15 V
Measure a DC Voltage Between 0 V and 1.7 V
Measure the Position of a Potentiometer
Measure an Unknown Resistance
Measure a Temperature
Output Characters on an LCD
Switch a 100 mA, 10 V Load
Switch a 1 A, 10 V Load That Always Stays Connected to Ground
Switch a 10 A, 40 V Load
Switch a 120 VAC Load
#29371 Presentation by Pete Brown at S. Fla code camp
Posted by JonnyBoats on 18 May 2012 - 04:57 PM in General Discussion
Gadgeteering and the .NET Micro Framework
#29314 ElectricImp ... heard of them?
Posted by JonnyBoats on 17 May 2012 - 04:37 AM in General Discussion
#29081 Blog post about the beta of another NETMF port to the STM32 F4
Posted by JonnyBoats on 15 May 2012 - 02:13 AM in Beta Firmware and Drivers
Additional information on NETMF for STM32.
#18104 New Arduino Wi-Fi shield
Posted by JonnyBoats on 17 September 2011 - 03:02 AM in General Discussion
I wonder if it will be Netduino compatible??
Anyway they will have them at Makerfare in NYC this weekend, so perhaps someone can check them out.
#19785 Having fun with Netduino: Carl Bergenhem, Chris Gilmore
Posted by JonnyBoats on 26 October 2011 - 02:35 AM in General Discussion
More info at: http://codecampboston.eventbrite.com/
#16049 Open source robot on TechJunkies
Posted by JonnyBoats on 29 July 2011 - 02:42 PM in Project Showcase
#15703 Discounted Netduinos
Posted by JonnyBoats on 19 July 2011 - 08:37 PM in General Discussion
http://www.seeedstud...etduino&x=0&y=0
#17994 ESC Boston?
Posted by JonnyBoats on 14 September 2011 - 01:22 PM in General Discussion
Interested in meeting up?
#18389 Another presentation featuring Netduinos
Posted by JonnyBoats on 25 September 2011 - 02:38 AM in General Discussion
#15098 .NET Gadgeteer
Posted by JonnyBoats on 06 July 2011 - 12:40 AM in General Discussion
Microsoft is looking for hardware vendors who are interested in developing kits and modules, so you could contact them if you are interested.
#19832 Arduino with Visual Studio
Posted by JonnyBoats on 27 October 2011 - 01:16 AM in Visual Studio
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