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1  Products / Arduino Due / Re: Just for confirmation: DUE cannot have external parallel RAM? on: July 30, 2013, 10:40:26 am
Better yet: a  40 MHz SPI 256K x 8 8 pin SOIC package F-RAM : http://www.digikey.com/product-detail/en/MB85RS2MTPF-G-JNERE2/865-1250-6-ND/4022691

David Garrison

2  Products / Arduino Due / Re: Just for confirmation: DUE cannot have external parallel RAM? on: July 30, 2013, 10:28:50 am
There are large (128KB) i2C FRAM (non-volatile and fast) devices from several vendors. For example see: http://www.futureelectronics.com/en/technologies/semiconductors/memory/fram-mram/Pages/6338354-FM24V10-G.aspx
3  Products / Arduino Due / Re: Due GUI (Graphical user interface) - [now version 0.13] on: July 12, 2013, 12:41:49 pm
Hi All.

I just received my 5.00" CTE LCD and a CTE Due shield.. Loaded version 0.13 of the great Due GUI and ran the example demo 02...looks great..one problem was that there was no touch response....bummer...want I found was that touch was working but the Y axis was inverted!   

Hmm.... checked the jumpers on the shield and they looked OK, at least from what I could find on the CTE website...so I poked around in the source for Due Gui and found there is a function for both X and y axis reversing....

I added this-- DueGUI.setReverseY(true) to   setup:

 
Code:
// Initialise DueGUI
  DueGUI.InitGUI(6,5,32,3,2,52,2,51);
  DueGUI.setReverseY(true);

Works now..

Can't wait until this is complete it is really very nicely done. I have written a fairly complicated (graphically) 4 screen GUI using the original work by Mr. Karlsen for the Uno32 by Chipkit...sorry Arduino , but I needed the speed for the screen redraws!..

Feature Request:

Add the ability to define line width in DrawLine.. I need fatter lines!  It can be done by drawing offset multiple lines but, that's a pain....

thanks for all your hard work!

David Garrison
Gaithersburg, MD USA

4  Using Arduino / Networking, Protocols, and Devices / Re: Wifi only connects when connected to Arduino with serial monitor. on: June 25, 2013, 04:17:00 pm
Really odd this IOREF  connection. After having a look at the schematic and the instructions* for the connection required if you are using a non R3 pinout board.... I became more confused.. As it appears that connecting 3.3 volts to IOREF causes NO level change as pin 19 is the B side VCC pin (connection to the Arduino pins). The instructions [copied below] suggest that one can make a permanent connection by soldering a jumper on the shield ...looking at the schematic reveals that this connects 5 Volts to the IOREF pin!!  Huh????

Seeing that, I tried jumping  3.3V or 5.0V to IOREF and found both worked....Ah,  I love electronics.

In any case, if a jumper is NOT installed when using a non R3 Arduino the shield will not work properly. 


*"Using the Shield With Older Boards
If you are using the WiFi shield with an Arduino earlier than the Uno rev3, you need to make the connection below for the board to work. The WiFi board uses the IOREF pin on newer Arduino pin layouts (Uno rev3, Mega2560 rev3, and later) to sense the reference voltage for the I/O pins of the board to which it is attached. If you are using the shield with an older board, you need to connect the shield's IOREF pin to 3.3V. You can do this either with a jumper wire connecting IOREF to 3.3V as shown in the photo below, or by soldering the IOREF jumper on the bottom of the shield, shown below. WARNING: If you use the solder jumper, do not connect the shield to a rev3 or later board. To be safe, remove the IOREF pin on the shield. Otherwise, you will be shorting 3.3V to 5V through the IOREF pin."


David G.
5  Using Arduino / Networking, Protocols, and Devices / Re: Wifi only connects when connected to Arduino with serial monitor. on: June 25, 2013, 03:33:08 pm
The IOREF line connects to pin 19 of IC 4/2  a TXB0108 octal level shifter, see .pdf at :

http://arduino.cc/en/uploads/Main/arduino-wifi-shield-schematic.pdf


David G.
6  Using Arduino / Networking, Protocols, and Devices / Re: Wifi only connects when connected to Arduino with serial monitor. on: June 21, 2013, 02:35:26 pm
More on ...adding a jumper pin 3 to pin 7 on the Wifi Shield.

I found the reference to that, it's in the comments section at the bottom of :

http://arduino.cc/en/Main/ArduinoWiFiShield

Odd thing is that there is NO reference in this document to possibly needing to add a jumper from the 3.3 V pin to the IOREF pin...YIKES!!!!!

David G.

Gaithersburg MD
7  Using Arduino / Networking, Protocols, and Devices / Re: Wifi only connects when connected to Arduino with serial monitor. on: June 21, 2013, 02:16:53 pm
Ahh..


Had the same problem. I am using a Mega1280 as the host Arduino for the WiFi shield.

 I have a Webclient sketch that would connect only when the USB (useb to download and for the serial monitor)  was connected. Added an external 12v power supply and found it would not connect ( no green LED, nothing sent to the server) I found that pressing the reset a few times ( on the base Arduino or the Shield) would start it up....h'mm ....I had pins 7 and three jumper-ed as suggested somewhere. So I whet back to the drawing board and re-read : http://arduino.cc/en/Guide/ArduinoWiFiShield#toc2..there was the answer..

in the section on using the Shield with older boards...

"put a jumper in from the 3.3 V pin to the IOREF pin on the WiFi Shield..."

As there was no reference to adding a jumper from pin 3 to pin 7; I removed it. I don't remember were I found that instruction

Did that and and it now connects and functions with no USB connected and just an external power supply.

David G.

Gaithersburg MD

8  Using Arduino / Networking, Protocols, and Devices / Re: Wifi only connects when connected to Arduino with serial monitor. on: June 19, 2013, 07:40:33 pm
See:

http://forum.arduino.cc/index.php?topic=172615.msg1282049#msg1282049

Sounds like the same problem?

David G.
9  Using Arduino / Project Guidance / Re: Help with Ethernet shield world wide IP on: June 09, 2013, 09:15:09 pm
Quote
How does  noip.com find out if a dynamic IP has changed on the remote Arduino??? 

A client request is made to on-ip.com, which identifies the current IP address being used by the client/server.

I understand that no-ip.com has a Dynamic Update Client available for Windows, etc, but how do we do this with the remote Arduino? Have you written some code to do this?

Thanks and best regards

D. Garrison
10  Using Arduino / Project Guidance / Re: Help with Ethernet shield world wide IP on: June 09, 2013, 01:16:26 pm
I've used the free version of no-ip.com below for years. It will work with an arduino server setup. 

http://www.noip.com/services/managed_dns/free_dynamic_dns.html

http://dyn.com/dns/



Have you used the noip.com with the Arduino server?  How does  noip.com find out if a dynamic IP has changed on the remote Arduino??? 

Sounds like a sweet solution to a project I am beginning to work on; an Arduino in a remote location connected to the internet to report back to home base what's up and to take some commands. The remote will have a dynamic IP address which is(was)  a problem !

D. Garrison
Gaithersburg, MD
11  Using Arduino / Microcontrollers / Re: ATtiny 1634 support? on: March 13, 2013, 09:26:07 pm
Looks like the folks responsible for the Arduino-Tiny cores have been busy:

See{ https://github.com/rambo/arduino-tiny/tree/attiny1634

Close reading indicates  that the AVR-GCC included in the Arduino IDE needs to be "Fresher" .. I have no clue how to do that --Typical Windows user....egad!

Perhaps it will all come together soon!


David G.
12  Using Arduino / Microcontrollers / Re: ATtiny 1634 support? on: March 13, 2013, 10:46:12 am
Well..
9 responses and no answer to my question.." is there Arduino IDE support for the ATtiny 1634?" I gather this means "NO!"

Bummer...
 smiley-cry
David G.
13  Using Arduino / Microcontrollers / ATtiny 1634 support? on: March 11, 2013, 11:04:04 pm
I did a quick forum search and did not find anything concerning Arduino IDE support  for the "new" --to me at least-- ATtiny 1634. Does any one have any information about using this device with the Arduino IDE????

Thanks in advance 

David G.
14  Using Arduino / Programming Questions / Re: Slowing down servos. How to write it into the program. on: January 30, 2013, 08:51:24 pm
Have a look at.... http://www.bajdi.com/arduino-servo-sweep/  for an article describing the VarSpeedServo library for Arduino..I have used this library and it works very well indeed!!

Best regards and good luck

David Garrison
15  Using Arduino / Microcontrollers / Re: Loading sketch and fuse on a naked 328P PCB on: December 02, 2012, 07:00:41 pm
I forgot to add that I am using the MEGA 328P-AU TQFP package  like the Nano v 3.0 .

Thanks in advance

David Garrison
Gaithersburg MD USA
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