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Member Since 08 May 2015
Offline Last Active Jul 18 2015 05:51 PM

Topics I've Started

USB-Serial Module

29 May 2015 - 01:56 PM

I'm sorry if this has been discussed, but doing a search revealed nothing. I have a USB-Serial Module via Go bus and can't actually figure out how to open a communication with it.


There's two things I would like to do in order of importance:

1) Use it to communicate with the PC

2) Use it to deploy and use the other USB for communication


It's probably something simple I'm missing, but not sure what...


The actual product is https://www.ghielect...log/product/287


I have the piezo, pot, button and led which I haven't even got to yet, but they seem pretty straight forward. It's this module that's got me stumped.


My test program from the PC can send to the USB-Serial as I see the light blinking on the module when I send text, I'm just not sure how to open the port on the Netduino 3 to read it.

TM1803 v2 LED Strip

17 May 2015 - 04:55 PM

Being a complete newbie and have no clue what I'm doing, I was wondering if someone can point me in the right direction.


I have a couple of RGB LED strips from Radio Shack that use the TM1803 controller. Is it possible to drive it using the Netduino? They use 1 wire for communication and it takes 12v at least 1 amp... I'm using a 12v 2amp adapter.


What method do I use to send it information? I have the Arduino code and the strips work fine, but I'd like to move it over to the Netduino, but since I'm such a newbie at this stuff, I'm not sure what pin I use (analog or digital) and how to send the information. I tried a bunch of different things but the strip just sits there and taunts me :-)


The arduino code seems to do a direct port write with a bunch of no ops to put in the required delay's when sending the 24 bit data structure. But converting that to .Net has stumped me.


To represent a High signal the TM1803 expects to see a signal with a period of 2.04uS and a duty cycle of 66%

To represent a Low signal the TM1803 expects to see a signal with a period of 2.04uS and a duty cycle of 33%

To represent a Reset signal the TM1803 expects to see a Low for 24uS


Any push in the right direction would help.


Attached is the data sheet for the chip.

New to Netduino, excited about prospects, need help getting started...

09 May 2015 - 03:12 PM

Hi Chris,
I've been a .NET user for a long, long time, but I'm a newbie at Netduino and all that it entails... I'm excited about it's prospects, but having a really difficult time with it at the moment.
I'm unable to see any device when running NetduinoUpdate.exe. I have followed the instructions and installed all the pre-requisites. I'm able to compile and run the blinky demo.
Here's my setup:
Computer: MSI GT70-0ND
OS: Windows 7 x64
Device manager reports: Universal Serial Bus devices -> STM32 BOOTLOADER
I don't want to clutter this thread with newbie questions, but do you have a pointer to someone just starting with Netduino? I really learn by example, and either I'm searching on Google for the wrong thing, or there just aren't any.
I tried to access the Wi-Fi, but failed miserably. It doesn't appear that Netduino 3 specific libraries are available. Even the download page't point to 4.3.1 SDK, so how will I know when there's a new release?
Finding code samples is a bear... For Wi-Fi, all I see is something like https://msdn.microso...e/gg232761.aspxwhich almost helps, but doesn't actually have info on how to access the device itself (in the code sample, it says "WiFi.Enable...etc..." so I'm assuming WiFi is a reference to the hardware which I can't seem to find in the libraries of the SDK.
I even tried writing a simple text file to the SD card, and got the file there, but even doing a .Flush() fails to write the contents... again, I can't find any samples specific to the Netduino 3.
Thank you for any help in advance to get me started...

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