Sorry about the delay, couldn't find the code so I had to write it all over again 

 

Anyway, attached is some code you can try. It's a small Hd44780 demo app using bit banging to drive the LCD. I wrote the app for the Mini but you should only need to change the pin assignments and using directives according to your board. It works perfectly on the Mini and hopefully it will on your board too.

 

Here's a couple of pictures showing what it should look like when running:

 

 

In the pictures the wiring may look funny because I use PWM to control brightness and contrast. That way I don't need any potentiometers and there's a few lines for this that you can uncomment if you want to use PWM. Should you decide to do so, first measure the currents to make sure you can drive the LCD straight off the PWM outputs. In my case the current is only some 4mA so it's fine.

 

Good luck!

 

 

 Hd44780Test.zip   4.55KB   4 downloads

Hi Dave and welcome to the forum,

I totally agree with Dave 

 

Seems like a good kit to start with. As you know the Netduino Plus 2 has networking capabilities and can send emails and such. As for sound, you can use PWM to play a chime on that piezo buzzer.

 

Since you're an experienced developer, I'm sure you'll manage to put the door bell/mailer together.

 

Good luck!

I agree, it's hardly a h/w error "anymore". Using a shiftregister would probably help but you need to change your wiring to use SPI with the shift register and probably have to use a different library (e.g. Mario's) too. Before trying that, I could post you some code to try when I'm home after work today. That code would be more or less a drop in replacement.

Very nice, at first I didn't see the Lumia but only an old 5110 but then I noticed the animated "fly by" arrows and reallzed the 5110 was never capable of that. Thanks for sharing! Edit: also, congrats on becoming a Nokia Developer Champion!

Cool, seems I was wrong about the LCD - Good!

Hi! I don't know about the RFID reader but I think the Netduino does not have enough processing power to drve that LCD. Take a look at the Nokia 5110 instead, I know people on the forum have had success with that. About the RFID, what do you mean by "Real Time Clock RFID Sensor"? I'm asking since normally, RTC and RFID are not integrated but two different modules.

I forgot to say earlier; move the if block to inside the do...loop for both threads.

Hi! Start by removing the do...loop in Sub Main, instead use Thread.Sleep(Timeout.Infinite). Next, both your threads will exit as soon as sensor and button reads true respectively. Once a thread exits its method, it stops running and won't get called again per se. Therefore, replace the "loop untill..." with just "loop" in each of the corresponding methods and it should work better. Better still would be for you to declare both sensor and button as Interrupt ports and then use the interrupt to turn motor rotation on and off depending the edge being high or low.

Hi!

 

I have some vague notion of reading somewhere that you could group pins together to form a parallel data bus on the version 2 boards but I can't find that info now and could be that was only a feature of the CPU itself and hasn't been made available to managed code yet. Perhaps someone can correct me on this?

 

So from what I know, the short answer would be no, I don't think there's any parallel bus.

 

...but - there are plenty of different solutions involving some external component. For example, with a shift register you can create a virtually parallel bus using SPI to drive it. You might want to look at the 74F166 which is an 8 bit bidirectional shift register:

 

http://www.nxp.com/d...heet/74F166.pdf

 

Also there's the PCF8574 8 bit quasi-bidirectional I2C I/O expander which is easy to use. Both of these ICs are available in breadboard friendly DIP16 packages.

 

For the latter, I've written a driver class and I2C bus manager that can be found in this post

http://forums.netdui...-and-ir-remote/

Phil, this is great since I'm a big fan of using IR remotes in my Netduino projects.
 

I've been using this NEC IR-receiver class which works great with many of the cheap credit card sized remotes available on eBay:

http://forums.netdui...col-ir-decoder/

 

It works well but does not support command repetition (such as volume adjustment).

 

I'm using it in several projects including my CD-player and I2C-driven LCD.

 

Hi Phil,

 

Great Post, I just decoded my Philips television remote control, but now I'll begin my search in how to transmit the data using IR trasmitter!

 

Anyone got any help on doing this?

 

Thank you!

You should be able to use SPI to send IR. Have a look at this thread on how to accomplish that:

 

http://forums.netdui...ased-ir-remote/

 

In the same thread I also wrote about how IR-transmissions are modulated in general using so called "burst pairs".

I just had another look at your code and I see that you check Available before doing anything at all. Maybe you have changed that now, but I think Available can be zero which just means that no data has been read in advance for you and that you must read it all by yourself - there's still an incoming request to be serviced. If not already done, put a Debug.Print statement immediately after the Accept statement and see what happens.