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1  Topics / Device Hacking / Re: Blackberry Joystick / Navigation Key Hack on: May 25, 2011, 01:03:42 pm
I imagine this would be considerably more difficult to use than a blackberry trackball, and possibly outside of the capabilities of the arduino, as this is basically a low-res camera.  The process of reading in data from the cam, comparing the images, and determining motion likely happens on a chip on the blackberry motherboard, and not inside this sensor (camera) .
2  Using Arduino / Project Guidance / Re: Preamplifier Control on: April 07, 2011, 12:26:26 pm
I've considered this for a project in the future.   What sort of adverse affects could you expect by running the audio signal through the arduino for use as a digital pot?
3  Using Arduino / Project Guidance / Re: Testing Pivotal Frequency on: April 07, 2011, 11:37:22 am
It seems possible to use a laser pointer,  a mirror mounted to the base, and a photo resistor attached to the arduino to measure the vibrations.   With the right alignment and distance, you could measure the frequency from the photo resisitor.  I'm not sure how feasible this is given the specs of the arduino.
4  Using Arduino / Project Guidance / Re: 5 speakers with 5 different audio and motion sensors on: April 07, 2011, 11:14:32 am
For the amplifier side, you might consider a few (3 stereo amps for 6 separate channels) chip based t-amp like the dayton dta-2.  They're nice and small, DC powered, and at least in the case of the dta-2, the volume and power switch are on a separate daughterboard, which would make interfacing with the Arduino more convenient.  As far as the audio source goes, I'm sure it wouldn't be difficult to find some tiny flash based mp3 players for under $10 each.
5  Topics / Device Hacking / Re: Laptop LCD screen on: April 07, 2011, 09:43:21 am
Generally, the cable running from a laptop LCD is not VGA, but a digital connection more akin to DVI.  The circuitry to convert the video signal to the format used by the LCD exists on the mainboard, and cannot be physically removed.  This would require signficantly more effort than simply mapping pins to a VGA connector.
6  Topics / Device Hacking / Re: texting with ps/2 on: March 08, 2011, 11:30:37 am
From reading the linked thread, it appears you begin by asking how to send text messages using only a keyboard, arduino, and GSM shield.  Further down, it seems you have instead decided to pay someone $200.00 to write the sketch for you.  Correct?
7  Using Arduino / Project Guidance / Re: Ping & port forwarding on: February 09, 2011, 04:14:58 pm
It won't be possible to forward ICMP traffic to a device connected to the AP/Router.  The ping will end up being returned from your Airlink 101 instead.  If you decide to go with a ping check, look into TCPPing in Linux, or tcping under Windows.  These apps allow a ping over TCP to a specific port which has been forwarded on your router, and should be sufficient to determine that your Arduino is powered on and (mostly) functional.
8  Forum 2005-2010 (read only) / Interfacing / Re: Very high servo count on: October 19, 2010, 01:56:13 pm
For more than 18 servos, a different option might be to use a separate servo controller, using the arduino for communication via serial.
9  Forum 2005-2010 (read only) / Interfacing / Re: Servo Control on: October 15, 2010, 02:32:01 pm

Assuming I had unlimited amounts of free time and money, I might consider learning to program something I haven't even decided to buy yet.  Unfortunately I dont.  So, I'd like to be sure the device does what I would like it to do before spending the cash and devoting the time.

For those that are offended by questions,  my apologies.
10  Forum 2005-2010 (read only) / Interfacing / Re: Servo Control on: October 15, 2010, 12:37:23 pm
I haven't delved into any of the actual programming for the Arduino yet.  How difficult is it to simultaneously move multiple servos, compared to moving one at a time?  
11  Forum 2005-2010 (read only) / Interfacing / Re: Servo Control on: October 15, 2010, 08:39:11 am
Thanks for the quick replies.  Other than the Roboduino and a few shields, are there any other duinos that have built in servo headers?
12  Forum 2005-2010 (read only) / Interfacing / Servo Control on: October 14, 2010, 11:34:35 pm
I've read somewhat conflicting posts and I'm curious to know how well the duemilanove or uno can control servos.  I'm looking to move 2-3 small servos (hs-55) smoothly and slowly without jitter.  Is this possible and fairly easily accomplished with the Arduino, or would I be better suited with something like a Pololu Maestro?
13  Forum 2005-2010 (read only) / Interfacing / Re: How to Purchase Servos on: October 15, 2010, 08:47:34 am
If you're close enough to civilization, Craigslist isn't a bad option for picking up a lot of misc servos.  It seems like there is always someone on there trying to undo their years of RC pack-ratting for a few bucks.
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