PShchegolevatykh,

I have used the LCD shield made by Adafruit LCD Shield, the one in the link is a white on blue with 2 lines of 16 character. They also have positive and negative RGB LCDs displays. Both are reasonably priced.

In using the shield I used Stefan's .Net Micro Framework Toolbox Toolbox it has a sample to use the Adafruit shield written in both Visual Basic & C#.

The other reason that I would reccommend this shield is that it only uses 2 IO pins (I2C communiction). This leaves most of the other pins for relays, sensors and switch inputs.

Happy shopping,
Chuck

HI
I have been testing some Socket in NETMF and found Toolbox.NETMF.NET and i have tried the
SimpleSocket, but when i add References to Toolbox.NETMF.Integrated, i cant deploy the project, i got the error please check hardware.

I have comment out all code to se what causing the error and it is when I add reference to the Toolbox.NETMF.NET.Integrated.DLL
it wouldn't deploy any more, if i remove the reference to the Integrated dll it commuincate to the board again.

I have upgraded the Netduino Plus to the latest 4.2 and i use the Toolbox for 4.2

ClrInfo.targetFrameworkVersion: 4.2.0.0
SolutionReleaseInfo.solutionVersion: 4.2.0.0
SolutionReleaseInfo.solutionVendorInfo: Netduino Plus (v4.2.0.1) by Secret Labs LLC

Any one who have a clue or have seen this problem before ?

//

MicroEmb,

The first thing I would try if you haven't yet is to power cycle the board (unplug, wait a couple of seconds and plug it back in).

When you plug it in did the computer recognize the USB connection?

In Visual Studio, select Project, select your program, select .Net Micro Framework. Does it show your board? Change deployment to serial then back to USB, it should show the board.

Try a differrent Micro USB cable.

Have you used the board successfully since the upgrade?

Hope this helps, if not more should be on tonight or tommorrow (Makers Faire in progress in New York today),

Chuck

Steve, Great story, you ever consider writting a book? I voted. Chuck

Perkunas, Its not to soon, I would reccommend just doing a search for "serial" on the forum, you should find some code. In the code look for something like switch or select that changes an integer based variable (I mostly work with visual basic so I may be off for C#). The 5000 & 1000 are just duration of sleep in milliseconds with the 5000 = 5 seconds of delay. If I get time tommorrow and you can't find anything that helps I will look or put something together for you to get you on track. Chuck

Toon,

 

I don't have time to look at the moment, but have you tried searching the forum?

 

The easiest way is to search from google (the forum doesn't find capitalized letters very well ie. LED, PWM)

use:

 

site:forums.netduino.com led

 

There should be something there.

Chuck

Hi

I was found some examples in C but I'm not shure how to translate it to VB code, can you show me how to do it with a simple example?

Thanks

JManual,

I assumed that you are wanting to convert C# (C Sharp) to Visual Basic. There are a couple of converts that normally work for me. The one that I use the most is Telerik Converter it converts both directions.

Chuck

Alright I will preface this with stating that I am completely new at this. It has been 10 years since my last Circuit Design and Digital Hardware class and most of that information has left my brain. So if the answer to my question is a recommendation to read a specific book that will work as well

My goal is to hook an electromagnet to a netduino. I'm looking at this one http://www.amazon.co...=A1THAZDOWP300U

and I'm not really sure how to tell if the netduino can power this.

I'm guessing from these specs the answer is no:
Rated Voltage : DC 24V;Current : 0.48A
Power : 1.2W;Attraction : 9000gf

but I'm just not 100% sure what to be looking for, I know basic electronics fail

Thank you for any help you can provide!

Ryan,

The Netduino can not power the coil, but you can control a relay or transistor with the Netduino and thereby control the coil.

Just out of curiosity are you going to be using the coil on a valve or to pick stuff up? The reason I ask is the coil appears to be made to work with a valve. It does not appear to have a pole piece that will direct the magnetic flux to the end of the coil for lifting objects. The magnetic field will be strongest inside the coil.

By the way welcome to the forum. Search for relays in the forum and you should find some information and code that will help you get started.

If you need additional help, please ask and provide as much information as you can about what you are trying to do. Often you will get a reply fairly quick, but please remember that most on the forum are not payed (may take some time to put an answer together for you) and a fair number live in Europe so your answers may appear in the early morning here in the North America.

Hope this helps,
Chuck

Im using the Adafruit LCD shield kit on my NP1(I2C). I ran the sample code (the one that displays up, down, left, right, and toggles 0 to 1) and it works well as expected. however if i leave it running for approx. 10 hours or more i get random characters on my LCD display scrolling across. Is there a way to lock down my registers to prevent this error, or any other method that will prevent this? Thanks!

I have seen the same problem, Tried to load the program but need to update mscorlib I could not get the sample to deploy under Netduino SDK 4.2.1 with the Netduino Classic. Will try to get it running again when I get a chance.
Chuck

Dim senstemp As New AnalogInput(Cpu.AnalogChannel.ANALOG_1)
Dim Temp As Double = 0

JManual,

Try something like the following:

Imports SecretLabs.NETMF.Hardware

 Dim TempSensor As New SecretLabs.NETMF.Hardware.AnalogInput(Pins.GPIO_PIN_A0)

Also I have some code listed in Visual Basic for the Netduino Go and shieldbase.

Just search for TMP36, should help with averaging the temperatures and conversion to different scales.

Just remember that the shieldbase has a 12 bit ADC (3.3vdc / 4096) while the other Netduinos use 10 bit ADCs (3.3vdc / 1024).

Hope this helps,
Chuck

Weixiongmei,

 

You can not use the installed micro USB, it is for power, deployment and debug only.

 

If you want to talk to the Netduino over a serial port you will need something like http://www.adafruit.com/products/284 or http://www.adafruit.com/products/70.

 

If you use the cable approach get one that outputs 3.3vdc not the 5vdc.

 

Read the series from CodeBlack, he has a lot of good information. http://blog.codeblac...ng-Started.aspx

 

By the way welcome to the forum.

 

Chuck