Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: cooldog on November 07, 2007, 06:15:02 PM

Title: first robot help
Post by: cooldog on November 07, 2007, 06:15:02 PM: help!!

i got this sweet tank from a secondhand store and when i opened it up i got scared! it had some sweet gears. anyway it didn't come with a remote so i was wondering i've been reading up on topics and came accross one that looks like what i would like to do. it is called RC tank by polar bear6 he talks about useing servo circuit bords to run motors. it has 3 motors in it but i only need to have two move. the motors run off of a costom 9.6 NiCd recargable battery. so what i am asking is if the servo circut bords work with these motors
Title: Re: first robot help
Post by: cooldog on November 07, 2007, 06:45:34 PM: hi i am looking to hook up indifferential drive to my r/c tank chasi it came with two 9.6 volt motors. so i was wondering what speed conrollers are best for this.

P.S. i'm on a buget
Title: Re: first robot help
Post by: Steve Joblin on November 08, 2007, 07:07:38 AM: I would look at the HB-25 by Parallax... http://www.parallax.com/Store/Accessories/MotorServoControllers/tabid/160/CategoryID/35/List/0/Level/a/ProductID/64/Default.aspx?SortField=ProductName%2cProductName (http://www.parallax.com/Store/Accessories/MotorServoControllers/tabid/160/CategoryID/35/List/0/Level/a/ProductID/64/Default.aspx?SortField=ProductName%2cProductName)
Title: Re: first robot help
Post by: Admin on November 08, 2007, 07:48:56 AM: Quote
so what i am asking is if the servo circut bords work with these motors
Probably not. The servo circuit boards don't go above ~6 or 7V. Depends on what voltage you want to run your motors at. Why not just use the motor driver in your tank?

Quote
...to hook up indifferential drive to my...
I think you meant so say differential drive (http://www.societyofrobots.com/programming_differentialdrive.shtml).

'indifferential drive' means your robot doesn't care where it goes :P
Title: Re: first robot help
Post by: cooldog on November 08, 2007, 09:30:33 AM: ya what motor controler do you recommend
Title: Re: first robot help
Post by: cooldog on November 08, 2007, 09:32:21 AM: do i need to program a microcontroller????????
Title: Re: first robot help
Post by: Admin on November 08, 2007, 10:34:44 AM: eeehhhhh we would need more info on your motors and what you plan to do with them to answer those questions . . .
Title: Re: first robot help
Post by: cooldog on November 08, 2007, 11:07:28 AM: they r 9.6 volt and they came with my tank. and i plan to use them one the same tank!!!!!!!!!!!!!1
Title: Re: first robot help
Post by: Admin on November 08, 2007, 11:10:35 AM: Then just use the same motor controllers, too.

So if you want to make it a robot, yes, you need a microcontroller to control the motor controllers.
Title: Re: first robot help
Post by: ed1380 on November 08, 2007, 01:50:32 PM: just get a receiver and transmitter designed for land use, and a couple ESC (electronic speed controllers)
Title: Re: first robot help
Post by: cooldog on November 10, 2007, 08:52:51 PM: i got this sweet r/c from goodwill. i took out the reciver ( it didn't have a contoler ) and i hooked it up dirrectly so it just goes straight. i tried hooking up 2 photocells one for each side but it wouldn't respond. i know the motors are good because i had them running but i can't figure out what is wrong.

P.S. i don't want to use a microcontroller!
Title: Re: first robot help
Post by: airman00 on November 10, 2007, 09:01:28 PM: use a microcontroller - if you want to get into robotics that is the way to go.

or you can use something called a comparator. search the forum and google for info about them.

P.S. Microcontroller will be needed eventually!
Title: Re: first robot help
Post by: cooldog on November 11, 2007, 06:25:56 AM: i know i need a microcontroller or a capacritor but i am not going to for this project.

any other ideas
Title: Re: first robot help
Post by: Admin on November 11, 2007, 07:23:23 AM: cooldog, try to keep your related posts together . . . you are causing people to repeat saying things to you ;)