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31  Forum 2005-2010 (read only) / Interfacing / Controlling Serial port location  (USB) on: October 18, 2006, 12:26:57 pm
I am curious if there is a way to predetermin what serial port my USB arduino is going to?

I am on Mac osX and on different machines it is choosing to be at different ports.  Forcing me to edit each time I move the arduino.

It seems that on each computer the port is constant.  (though I haven't tried restarting the computer yet)

Conversely, is there a way for the software on the computers side to determine what port it is hooked to?
so that the software can automatically adjust.
I plan on using C.

Thank you

Chris Lund
32  Forum 2005-2010 (read only) / Interfacing / Re: What chips can I program? on: October 16, 2006, 03:24:48 pm
I am not sure here, but what I think joakimk is asking for is can the atmega 8 chip be used in a custom circuit.

That is, program the chip, then remove it and use it elsewhere.  Such as a standalone circuit, that has no USB or serial conectivity or any of the other items that may not be needed for a particular task.

 Which, as far as I can tell, there would be no problem with that.

The only issue is, there are only two ic's that can be programed right now.  the 8  and the 168
However, as I understand it, the growth and excitement of the arduino platform means that this will not always be the case.  Of course, I shouldn't say much as that level of stuff is way over my head.

33  Forum 2005-2010 (read only) / Interfacing / Re: using "Arduino" fot a stepping motor... on: October 15, 2006, 06:14:56 pm

Yea, I am thinking of something like a mill.  I want to hack together a simple X,Y positioning table made from stripped down scanners.  Later, mayber even add a Z to it.

I want to control it directly from my CAD app.  It looks as though the L297, L298 are what I am looking for.  But I shall check out your Xylotex controllers too.

Thanks for the reply,

34  Forum 2005-2010 (read only) / Interfacing / Re: using "Arduino" fot a stepping motor... on: October 09, 2006, 02:09:42 pm
Any recommended driver for a bipolar?


35  Forum 2005-2010 (read only) / Interfacing / Re: Real time clock on: October 09, 2006, 08:30:47 pm
For now, my own code is going to be pretty simplistic.    meet this condition, do that... type of a thing.

Any idea how much space would be left over?   Guess that is a good reason to get the arduino stamp!   Can't wait till sparkfun gets em in.

the last update from 0004 to 0005 took around six months.   Ist that the expected time for the next release?

Thank you,

36  Forum 2005-2010 (read only) / Interfacing / Real time clock on: October 09, 2006, 04:09:09 pm
Hello all!

nooB to the arduino (and microcontrollers in general)

I am working on a project that will require a real time clock.  The ones I have found use the I2C protocol.

However, it appears that the I2C protocol is not (at least yet) implemented.  So, I have a few questions regarding.

Is there another RTC that will work with the Arduino?
Is there another method/ workaround?

And most important (long term), can we expect the I2C protocol to be implemented and when?   This one I am curious mostly because I have noticed a lot of sensors/devices that use it.

Hey!  thank you and best regards,

Christopher Lund  -  ñeurascenic
37  Forum 2005-2010 (read only) / Workshops / Denver CO? on: March 07, 2008, 12:10:51 pm
Anybody interested in a group here?  I would love to get together between doing pottery and fencing class.

Far from an expert here...

Chris L.
38  Forum 2005-2010 (read only) / News / Re: Arduino PID Library on: November 13, 2008, 01:52:25 pm
Could somebody be kind enough to give and explain application concepts for PID?


39  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: graphical lcd (nokia 3310) on: November 02, 2006, 03:45:40 pm
double ditto that!

40  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Larger Arduino projects on: April 10, 2008, 12:17:44 am
"I think we're talking about more than just boards though, ...."

Fair enough, though think of the potential for such a model.   Make the boards available this way, as they get more popular then kits would make more sense.    Also, the service could provide key components.

True, ideally a kit would be available promptly... however, this could be a good way to get a design off the ground.

Do understand, that I don't mean to duplicate the ponoko model, but rather to adapt it in a way that would make sense for the product.

41  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Larger Arduino projects on: April 09, 2008, 11:14:16 pm
For a business model, you guys might want to look into ponoko.

Check out how their business model is set up...  A derivative of this would be real cool

How about this for a possibility, as local manufacturing would not be practical.

e.g.  100 boards are made.   5 Distribution points  all 5 would get 20 boards.   Customer orders a board from the most local to him/her.

Designers here too could upload boards that customers could order.  Here both the New company and the designers would get a cut.
Of course some of the less run designs would have to be set up similar to batchPCB (sparkfun)... However, a deal could be struck with GoldenPhoenix too (as BatchPCB) did for this kind of service.   As designs get more popular, they could be Run ahead of time to save time and money.

42  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Future features on: March 24, 2008, 04:53:15 am
Isn't that what the "bugs and suggestions" is for?

43  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: arduino or basic stamp on: February 26, 2008, 01:23:07 pm
Regarding BASCOM, the reason I am not interested in it, (and I am a full on beginner) is that the C syntax is exactly what I need.

It seems a bit retarded to me to have to learn different sets of programming styles.  Especially when C/C++ does the business.
My understanding of it all, is that C is better for proper coding skills than is any derivative of basic.  Why then learn bad skills, even if you are going to go onto things like Java and Python.

Of course this could come from my lack of understanding.

Regardless, for me, I want to write code for my CAD application to link to the physical world... and that has to be done in C/C++


44  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: 'Making things talk' book with OSX 10.5.2 on: February 16, 2008, 08:53:27 am
Oh sheesh! ....  Can't tell you how many times I looked at that.  That works Great now!  Thank you so very much!
Guess there lies the problem with reading 30 pages ahead then going back to try the experiments.

Currious though,  are you saying that my question prompted you to go to the library to get the book?
Wow, doubly thanks then.

Gotta say, this book is going to fill in a lot of the missing information for me.  At least it is going to get me started.


45  Forum 2005-2010 (read only) / Frequently-Asked Questions / 'Making things talk' book with OSX 10.5.2 on: February 16, 2008, 01:33:03 am
Hey all...

I am just digging into Tom Igoe's kick'n book but am running into a little issue.

on page 34 (I read ahead and now am going back to try things)  he gives a command to open up the serial port via the terminal (10.5.2. uses bash)

when I enter it, I get the following

Neurascenic:~ neurascenic$ /dev/tty.usbserial-A4000PBA 9600
-bash: /dev/tty.usbserial-A4000PBA: Permission denied

Do I Need to set up something else first?   BTW,  using the 'serial monitor' in the Arduino environment works just fine.

I quit the Arduino environment just to make sure that it wasn't locking me out of the port.  Even Reboot.  Still the same.

Any help would be fantastic.

Thanks now and I will reserve one for later.

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