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106  Using Arduino / General Electronics / How many mA? on: January 03, 2013, 02:34:30 pm
Does anybody know how many mA the Arduino Mega's 5v pin can safely supply?


 Thanks!!!
107  Using Arduino / Installation & Troubleshooting / Re: Arduino Mega 2560 MAC on: January 02, 2013, 04:01:33 pm
I just put a program on it and it worked.  Thanks!!!   I did not know it did not need drivers like the old ones.
108  Using Arduino / Programming Questions / Re: Add to an integer on: January 01, 2013, 05:38:42 pm
Thanks!!!
109  Using Arduino / Programming Questions / Add to an integer on: January 01, 2013, 05:33:22 pm
Hello I would like to know ad +1 to integer. Does anybody know how to do that?


Thanks,
Drew
110  Using Arduino / Installation & Troubleshooting / Arduino Mega 2560 MAC on: January 01, 2013, 05:12:36 pm
Hello, I just got a new Arduino board and I can't get it set up. I Have downloaded the drivers for several Arduino's on my old computer which was a PC, but I have never downloaded on a mac computer. I read how to do it on the Arduino website, but nothing pops up like it says it should. Also I can't find a drivers folder under Arduino. Is that normal in a mac?


Any suggestions?

Thanks,
Drew
111  Using Arduino / Project Guidance / Re: running out of pins on: January 01, 2013, 09:14:25 am
Could you get an Arduino with with more pins... like the Mega?
112  Using Arduino / Motors, Mechanics, and Power / Re: Motors no longer working on: January 01, 2013, 09:10:55 am
Also can we please see your code.

113  Using Arduino / General Electronics / Re: heat sink on: January 01, 2013, 09:09:28 am
Thanks
114  Using Arduino / General Electronics / Re: parts sources on: January 01, 2013, 08:57:49 am
Best place to get parts cheap is http://www.digikey.com/?curr=USD
115  Using Arduino / General Electronics / heat sink on: January 01, 2013, 08:51:29 am
Hello, I have two SN75 chips that I'm using for motor control. Anyway they need a heat sink, and I was wondering if I could put them both on one big heat-sink, or should they have their own.

Thanks,
Drew
116  Topics / Robotics / Re: Robot arm, need help on: December 30, 2012, 03:19:10 pm
Hello, don't you think 5 Arduino's is a bit much for a robot arm. How many servos are you using? I bet 1 mega would be able to handle the entire project.  That would make your arm much easer to build and way cheaper! It would also be more reliable… less components to break.

Best of luck,
Drew
117  Topics / Robotics / Re: Motorized pan/tilt, zoom and focus videoscoping setup for field use. on: December 30, 2012, 10:27:59 am
Thats the spirit!!!

The one thing I don't understand about your project is how you plan to move your camera around. Are you adding the motors to an existing tripod or are you making your own. Before I can recommend motors to you I need to know how they will attach… gears, pulleys, shafts, etc.
118  Using Arduino / Project Guidance / Re: PH fish tank on: December 30, 2012, 10:22:58 am
Thanks for all the help! I think I will probably buy the kit from spark fun and learn how to measure different ph levels before using it to grow algae.

Thanks again,
Drew
119  Using Arduino / Project Guidance / Re: What's a good 2 line LCD to get? on: December 29, 2012, 10:46:17 pm
I love the one I have from grove.
http://www.seeedstudio.com/depot/grove-serial-lcd-p-773.html?cPath=163_164
120  Using Arduino / Project Guidance / Re: PH fish tank on: December 29, 2012, 10:30:32 pm
Spark fun gives you 3 bottles; 250ml Red Buffer Solution - pH 4.0, 250ml, Yellow Buffer Solution - pH 7.0, 250ml Blue Buffer Solution - pH 10.0. How long do you think that will last? Also do I just leave the sensor in the tank or do i need to extract a sample from the water and place it into the sensor.

Thanks,
Drew Davis
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