Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: julia1 on August 05, 2007, 06:08:39 PM

Title: help with $50 robot batteries
Post by: julia1 on August 05, 2007, 06:08:39 PM

hello, in step 2 of the $50 robot tutorial, it shows how to make the bot remote controlled. I`m not using a nimh pack, i`m using a battery holder. There are two wires coming out of the battery holder and I`m not sure how to connect them to the servos and to the receiver. I also read the "REMOTE CONTROL ROBOTS" page but I still can`t figure it out. Thanks in advance.

Title: Re: help with $50 robot batteries
Post by: Admin on August 06, 2007, 04:51:54 AM

You will need to attach a female molex header to those two wires (just like the connector on the servo wires) to plug it in to the reciever.

Id recommend just getting a battery pack . . .

Title: Re: help with $50 robot batteries
Post by: julia1 on August 06, 2007, 09:28:51 AM

Hi, I live in brazil and its too expensive to buy the battery pack and the battery pack charger in dollars plus shipping.

Do you know any tutorial to attach that header to the two wires? I tried looking on google but I couldn`t find anything. Will I need a crimp tool?
Also, I cant find the keywords "female molex header", I can only find "female molex connector" and "female molex pins" I think you probably meant the connector, right?
My servos haven`t arrived yet and I don`t want to wait until they do to order the header, it would take too long. So is this the header you`re talking about? http://www.jab-tech.com/ConnectorZ-Pro-Female-4-Pin-Molex-UV-Green-pr-2196.html

Title: Re: help with $50 robot batteries
Post by: Admin on August 06, 2007, 12:57:28 PM

On the second half of this page I show how to crimp wires:
http://www.societyofrobots.com/schematics_photoresistor.shtml

these are the digikey part numbers:
WM2512-ND pins
WM2801-ND 3 pin housing
WM2800-ND 2 pin housing

Im sure other places than just digikey sell those . . .

I need to crimp some wires soon so I might make a video of it within a week or two if I have time.

Title: Re: help with $50 robot batteries
Post by: julia1 on August 06, 2007, 04:36:31 PM

hi
I dont have a crimp tool, so that would be just as expensive as the nimh batteries or more.
I found something, so hopefully this will be my last question about batteries.
Can any of these battery boxes connect directly to the receiver?
Pro Boat RX Battery Box: 1/8 Hydro PRB2287 (http://cgi.ebay.com/Pro-Boat-RX-Battery-Box-1-8-Hydro-PRB2287_W0QQitemZ160137659718QQihZ006QQcategoryZ34058QQssPageNameZWDVWQQrdZ1QQcmdZViewItem)
Hitec Battery Box w/BEC Rx Connector w/7201 Ha HRC57201 (http://cgi.ebay.com/Hitec-Battery-Box-w-BEC-Rx-Connector-w-7201-Ha-HRC57201_W0QQitemZ250143853220QQihZ015QQcategoryZ34063QQssPageNameZWDVWQQrdZ1QQcmdZViewItem)
Hitec Battery Box: 72MHz Rx System HRC57216 (http://cgi.ebay.com/Hitec-Battery-Box-72MHz-Rx-System-HRC57216_W0QQitemZ250143851202QQihZ015QQcategoryZ34063QQssPageNameZWDVWQQrdZ1QQcmdZViewItem)

I can`t really figure the difference between them, but I think they all work, right? So I would just plug that RX connector that comes out of the battery box into the receiver, right? Thank you in advance.

Title: Re: help with $50 robot batteries
Post by: Admin on August 06, 2007, 06:19:07 PM

Yes, all of them should work. The last one would be best.