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1  Using Arduino / Networking, Protocols, and Devices / Re: Wireless Bluetooth Sketch Uploading on: June 25, 2012, 10:33:47 am
Thanks for the help!

Reading your trials was very helpful. Confirmed and expanded upon what I had researched.

I may look into a hardware solution to the problem...
2  Using Arduino / Networking, Protocols, and Devices / Wireless Bluetooth Sketch Uploading on: June 24, 2012, 10:04:16 am
Hey. I am trying to find a Bluetooth module that will allow for wireless sketch uploading. In my research I think I read that any Bluetooth module can do this if you press the reset button at the right time (right after pressing upload?).  So would both of the following modules work for wireless sketch uploading and if not could anyone suggest a good module for this?

http://www.robotshop.com/ca/productinfo.aspx?pc=RB-See-179&lang=en-US

http://www.robotshop.com/ca/productinfo.aspx?pc=RB-Dfr-10&lang=en-US

And is there a different wiring configuration for this functionality or will it work wired the same way?

Thanks for the help guys
3  Using Arduino / General Electronics / Re: What is an I/O Expansion Board? on: June 08, 2012, 05:29:07 pm
Think I have a better idea of whats happening now... Thanks guys.

Maybe I am supposed to use the i/o board in combination with the joystick for interrupts as Manjeko said... hmm
4  Using Arduino / General Electronics / What is an I/O Expansion Board? on: June 08, 2012, 02:32:02 pm
This is probably one of the stupidest questions asked here... but what is an I/O expansion board and what is it used for?

Is it used for testing software? Or for connecting between different interfaces?

I was told I will be working with an Arduino micro controller, joystick, lcd screen, servo, and an I/O expansion board for a project and that I need to interface them all together as soon as possible, but I can't figure out how the I/O board is used? Shockingly googling "i/o expansion board" returns very little information.

Thanks for the help!
5  Using Arduino / Motors, Mechanics, and Power / Re: Stepper Motor's and Sixteenth Stepping on: May 13, 2012, 02:59:40 pm
So you bring up a good point... why is that this motor below claims to have a step resolution of 0.07 degrees but then when I click on the second link I provided below the step angle is 1.8 degrees?

http://www.robotshop.com/ca/geared-bipolar-stepper-motor-3v-416-oz-in.html

http://www.robotshop.com/ca/content/PDF/mechanical-drawings-3318.pdf

Is it safe to say that the smallest step angle is 1.8 degrees in stepper motors? And with a micro-stepping I could at most reduce this to about 0.2 degrees pre step?  (Pretty much confirming that I understand what you stated before Mark)
6  Using Arduino / Motors, Mechanics, and Power / Stepper Motor's and Sixteenth Stepping on: May 11, 2012, 02:41:35 pm
Hey,

I am working on a project that is going to involve multiple motors that need a wide range of speeds.  I need the resolution of the stepper motors to be 0.01 degrees, which is very small. And at maximum speed I need them to be able to do 60 RPM (1 revolution per second). So I was wondering if I used a stepper motor with a resolution of about 0.16 degrees, and then used sixteenth stepping with a motor driver would that be equivalent to a resolution of 0.01 degrees?  What are the drawbacks of this?

Also one (or two motors) need to control wheels on the cart of my project.  Which need a minimum speed of 0.1mm/s and maximum of 1m/s.  Is it wrong to use steppers for these motors?

Thanks for the help,
James
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