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31  Using Arduino / Project Guidance / Re: Arduino Board Selection on: January 07, 2014, 04:45:18 pm
I second the servo idea... the amount of weight you are using is trivial. Look at spark fun and servo city. You will not need a separate controller and you will be able to move it accurately.

 If you use a motor it would probably be a gear motor... a un-geared motor will have high RPM but hardly any torque, then again you don't need much torque.  If you go this option checkout spark fun. Keep in mind precision will be hard with this method .

A MOSFET will be able to control the speed, but not direction of a motor. A motor driver Is the same thing as a shield it just does not snap on top. Everybody will tell you that.


Best of luck!
32  Using Arduino / Project Guidance / Re: Arduino Board Selection on: January 05, 2014, 10:47:05 pm
"There will be fairly little torque resisting the motion on both motors"

That is no help. What is fairly little torque? Also that torque is somewhat a nonissue when selecting a motor driver. We need the Amperage... although related to torque it is not the same thing at all.  As far as the motor shield why do you want one? Use a driver... same thing but it does not snap on. You could also use a MOSFET.

small size: https://www.sparkfun.com/products/10213

very small size: https://www.sparkfun.com/products/9457

relatively small size:  https://www.sparkfun.com/products/11080

Best of luck!

33  Using Arduino / Project Guidance / Re: xbee wireless communication on: January 05, 2014, 10:41:25 pm
What program(s) have you tried? Have you used any code or just given up before that point? Next time post the code you have tried to just say that you have not used any.


To send wireless signals you need to use the serial.print function. 

This link should be helpful. It gives your a walkthrough + all the needed code!     
http://bildr.org/2011/04/arduino-xbee-wireless/



Best of luck!
34  Topics / Robotics / Re: Wireless Video Streaming? on: December 28, 2013, 03:40:36 pm
I have never streamed video over wifi. I can't be much help with that, but if you have any questions outside of the wifi streaming in regards to your robot I would be happy to try and help you.
35  Topics / Robotics / Re: 2 wheel vs. 4 wheel on: December 27, 2013, 03:38:32 pm
If you look at all the great robots from from RFL there were 2 and 4 wheel whiners. It depends on what you are going for. Look up Biohazard and Team Nightmare.  That will give you an example of a 4 wheel and 2 wheel robot. Personally I like 4 wheel robots.
36  Topics / Robotics / Re: Wireless Video Streaming? on: December 27, 2013, 03:35:03 pm
You can stream video but you will have to buy new parts and you will need a camera. The Arduino will have nothing to do with it . By a camera and a transmitter.

Use the Arduino for the robot... not for the video transmission. Also, what video shield did you get?
37  Using Arduino / Programming Questions / MAX6675-library on: December 27, 2013, 03:28:17 pm
How would I use two sensors with this library?  I have one temperature sensor working, but I can not figure out how to read the temperature from two sensors.  I have tested them separately and they work. Also, i'm using the proper MAX6675 chip not the other newer one.

https://github.com/adafruit/MAX6675-library

http://learn.adafruit.com/thermocouple/


Thanks!
38  Topics / Robotics / Re: advice for a newbie on: October 27, 2013, 10:00:38 pm
This would work...
https://www.sparkfun.com/products/12032
39  Community / Bar Sport / Re: Recycling Old Circuit Boards (For Profit?) on: October 03, 2013, 10:54:45 pm
I read that article as well. It was very good. It makes me even more weary from buying on ebay.
40  Community / Bar Sport / Re: US shutdown - safe mode on: October 03, 2013, 10:52:05 pm
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Odd that, I don't remember my dad or two of my cousins choosing to have cancer, I wish I had asked them just to make sure.Come to think of it no one asked my son if he wanted to have a growth hormone deficiency either.

Please don't misunderstand my comment.  This was in no way an attack personally and has nothing to do with people's health, but rather who should pay for their care.    Although some people aren't  in their position (monetarily) do to any fault of their own most people made mistakes in their life that led them into the place that they can't afford health insurance, and I don't really think that I should have to pay for their care . For example, people with a  long and ongoing criminal record should not qualify for free stuff including health care…. their children are another story.


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Your tax money is already used for "free" health care (and has been for your entire life).

I know. I was responding to the commit that said America should restart with free health care.
41  Community / Bar Sport / To much green! on: October 02, 2013, 08:29:27 pm
I just have to say all the green on the Arduino web sight is a bit much. I also miss the separate link to the forum. What do you all think?
42  Community / Bar Sport / Re: US shutdown - safe mode on: October 02, 2013, 08:21:54 pm
Nothing is ever free… somebody has to pay, and personally I don't want my Tax dollars to be spent on giving people free health care as most of them chose or chose to be were there at in life. Giving 'free' health care to children is one thing giving it to adults who are in the place they are at because of their bad decision's is not.   

The guns are debatable, but I'm not completely sold on the fact that they should all be banned.
43  Using Arduino / Motors, Mechanics, and Power / Re: VarSpeedServo - a modified Servo library with speed control on: October 02, 2013, 08:20:52 pm
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i get a lot of errors
Sadly, no members of the Arduino forum that I know are trained in Telepathy so unless you post what the errors are we really can't be of much help  smiley-grin

Your code complied fine on my computer (I have the library's installed). My guess, would be that you installed one of your library's  wrong or you need to update them to make them compatible with the new version of Arduino IDE (assuming your running it).
44  Topics / Robotics / Re: Hi to all on: October 01, 2013, 03:05:36 pm
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what is the point of this if you don't want to help?

The point is to interact and bounce ideas off  of other Arduino fans. The point is not for us to be your servants.

The problem is that you started with a project that is way past your capability. Try making some led's blink and the other basics. After a few months of learning and experimenting with Arduino then try to make the code for your servo, then work on your sensor, and finally your motors. When you run into issues try to work them out with the help of google and if you still don't understand come ask us to point you in the right direction. Your not going to get far in life by doing this…
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My question is if someone can make me a circuit diagram of how to connect all this and and code of course
45  Community / Bar Sport / Re: can you code a program ...without a single program line ? on: September 30, 2013, 05:59:36 pm
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It's great as an "intro to programming", but gets frustrating very shortly afterwards

Wait till you start having data wires running all over the place smiley-sad

Try RobotC it is much better for the NXT
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