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436  Using Arduino / General Electronics / Re: How do Ground's work? on: May 10, 2013, 08:40:19 am
Thank you! Those explanations helped me understand a little better. So from what i'm understanding it's ok to hook all the grounds used in my project to one ground pin on the Arduino. I just want to make sure before I power everything up because I really don't what to lose any parts!


Thanks again!
437  Using Arduino / General Electronics / How do Ground's work? on: May 10, 2013, 08:17:47 am
Hello,

I'm starting a project and I don't know what to do. I will be using a MEGA and two motor controllers (see link below). I was wondering how I should ground everything. Is it ok to have everything grounded on to one Arduino pin? I'm confused because the motor driver has a common ground between the battery pack and the Arduino but I thought to ground something together it had do be the same voltage. I don't really understand how grounds should work so some info would be appreciated.


http://www.dfrobot.com/index.php?route=product/product&product_id=66#.UYzwB5UrdEc


Thanks!
438  Using Arduino / Sensors / Re: What type of sensor…. on: May 08, 2013, 07:43:28 am
I will keep that in mind.

Thanks!
439  Using Arduino / General Electronics / Re: Breakout Board help on: May 07, 2013, 09:11:22 pm
Thanks for the info. I could not find one for the Sn754410 at spark fun and the pins looked like they would match so I figured it was worth asking.

440  Using Arduino / General Electronics / Breakout Board help on: May 07, 2013, 08:13:09 pm
Would this breakout board work for the sn754410?

https://www.sparkfun.com/products/9540


Thanks!
441  Using Arduino / Sensors / Re: What type of sensor…. on: May 07, 2013, 08:00:44 pm
Thanks pito!

I did not know that if the robot was moving at the same speed it would not inter fear with the readings. Problem solved!
442  Using Arduino / Motors, Mechanics, and Power / Re: I am trying to control direction of 2 motors with a push button on: May 07, 2013, 08:59:50 am
I would love to help you but I need some more info. To start with please give us what motor driver you are using, what type of Arduino you are using, and what type of power supply you are using.
443  Using Arduino / Sensors / Re: What type of sensor…. on: May 07, 2013, 07:33:39 am
Catford,  I would like to help you but I don't know anything about rc helicopters. Try starting a new post and other members will weigh in.



Groundfungus, I do need the sensor to be accurate while the robot is moving. Do you have any suggestions as to what I should use?


Thanks!
444  Using Arduino / Sensors / Re: What type of sensor…. on: May 06, 2013, 07:13:01 pm
Is their any one you recommend? I was looking at spark fun and they seem to have a lot of choices! I would prefer something really simple to program and cheap in price.

Also, the robot will be moving up the hill when the sensor is reading.


Thanks!
445  Using Arduino / Sensors / What type of sensor…. on: May 06, 2013, 06:44:41 pm
Hello,

I'm building a robot and I was wondering what sensor I need to sense how steep of an incline my robot is traveling up.

Links would be great!
446  Using Arduino / Project Guidance / Re: Heat Protection on: May 06, 2013, 08:51:37 am
Thanks for all the help! I will probably buy both the sensors and the heat shields just for fun!

Thanks!
447  Using Arduino / Project Guidance / Re: Heat Protection on: May 05, 2013, 07:19:29 pm
Also,

If you can't get those tiles anymore does anybody ells have other ideas on how to heat proof the project box or the wire, if it can be run a few feat.


Thanks!
448  Using Arduino / Project Guidance / Re: Heat Protection on: May 05, 2013, 07:17:04 pm
I thought their was a limit to how long you could run a wire? Thats why I thought the Arduino had to be close by. Also, I think it would be easier to heat proof the project box then to try and heat proof the wire.

As rrobtillaart said where do you get those tiles?
449  Using Arduino / Project Guidance / Heat Protection on: May 05, 2013, 01:40:19 pm
I don't know if this is the right place to post but I think it should work smiley

My Arduino will be inclosed in a project box, measuring the temperature of a fire in a fire pit. It will be directly under the fire so i know it will probably get hot enough to melt the Arduino. What could I use to insulate the project box to keep the Arduino at a reasonable temperature?

Thanks!


450  Topics / Robotics / Re: Programs for creating 3D models of robots before building them? on: May 04, 2013, 11:03:01 am
Hello,

I'm also looking for a way to make a 3d design of a robot before I build it. However, I don't need the robot to function. Do you know of any free software?
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