Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: dakiddk4 on October 22, 2010, 01:07:43 AM

Title: buying hardware?
Post by: dakiddk4 on October 22, 2010, 01:07:43 AM
Hi, i really want to get into building robots as a hobby. I saw videos on remotes and was wondering how would I go about buying a transmitter, receiver, and servos. I get the gist of putting them all together but am not quite sure how to go about buying the hardware. Thank you, your help is much appreciated.
Here are a couple I saw on e-bay:

http://cgi.ebay.com/E-FLITE-BLADE-CP-CP-PRO-6CH-RC-HELI-TRANSMITTER-NEW-/320599952285?pt=FR_CA_Radiocommande_pi%C3%A8ces&hash=item4aa53f0b9d (http://cgi.ebay.com/E-FLITE-BLADE-CP-CP-PRO-6CH-RC-HELI-TRANSMITTER-NEW-/320599952285?pt=FR_CA_Radiocommande_pi%C3%A8ces&hash=item4aa53f0b9d)

http://cgi.ebay.com/2-4GHz-6CH-Transmitter-Rx-4-RC-AIRPLANE-HELICOPTER-/180571231597?pt=Radio_Control_Parts_Accessories&hash=item2a0ae2556d (http://cgi.ebay.com/2-4GHz-6CH-Transmitter-Rx-4-RC-AIRPLANE-HELICOPTER-/180571231597?pt=Radio_Control_Parts_Accessories&hash=item2a0ae2556d)

http://cgi.ebay.com/6CH-72Mhz-Transmitter-Receiver-RC-Helicopter-airplane-/280425013501?pt=Radio_Control_Parts_Accessories&hash=item414aa220fd (http://cgi.ebay.com/6CH-72Mhz-Transmitter-Receiver-RC-Helicopter-airplane-/280425013501?pt=Radio_Control_Parts_Accessories&hash=item414aa220fd)

http://cgi.ebay.com/6CH-72Mhz-RC-Transmitter-Receiver-Trex-450-V2-TX-RX-/180433744330?pt=Radio_Control_Parts_Accessories&hash=item2a02b071ca (http://cgi.ebay.com/6CH-72Mhz-RC-Transmitter-Receiver-Trex-450-V2-TX-RX-/180433744330?pt=Radio_Control_Parts_Accessories&hash=item2a02b071ca)

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=130412193071&ssPageName=STRK:MEWAX:IT (http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=130412193071&ssPageName=STRK:MEWAX:IT)

Thank you.
Title: Re: buying hardware?
Post by: garrettg84 on October 22, 2010, 05:39:54 AM
I bought my tx/rx from hobbyking.com. It is brand new you can get a 6ch tx and rx for $30. Seems to work alright for me.
Title: Re: buying hardware?
Post by: dakiddk4 on October 22, 2010, 08:10:02 AM
thanks i'll definitely check it out
Title: Re: buying hardware?
Post by: knossos on October 22, 2010, 08:23:08 AM
What you buy is largely dependent on what you plan on doing with it, the term "Robot" can be somewhat vague.  If you can give us more details on what kind of project you are interested in, I'm sure someone can provide some advice for you.  

Are you interested in a remote controlled vehicle, or are you interested in something more capable with sensors, etc?  If you are going with a remote controlled vehicle a transmitter, receiver, and servos would work for you.  If you want any degree of autonomy, you would want a microcontroller.  If you want a remote controlled autonomous vehicle (basically an autonomous robot that can also be controlled with a remote) you might want to add bluetooth, and use that instead of a transmitter/receiver pair.  The more detail you provide the more helpful we can be.  

For example, since it looks like from your part list you are looking more for a remote controlled vehicle some good information to provide:

What kind of design are you looking for?
How many powered wheels?
What type of steering (e.g. differential drive)?
What other capabilities (e.g. pan and tilt assembly)?
etc.
Title: Re: buying hardware?
Post by: dakiddk4 on October 22, 2010, 09:48:41 PM
this is goin to be my first time using servos transmitters and receivers so i figured i'd start with a 4 wheel rc vehicle and then add maybe a robot arm as i get a little more practice...then after that move on to a microcontroller...im not exactly sure if the microcontroller would be easier than the rc robot since im just beggining.
Title: Re: buying hardware?
Post by: knossos on October 22, 2010, 11:31:28 PM
If you have no experience programming, a remote controlled vehicle would be easier to start, but if you are interested in going with I microcontroller, personally I would recommend that you dive right in.  I would also recommend going with a two wheel differential drive (kind of like how a tank steers) because it is simpler to implement, allows a sharper turning radius, and is easier to program.