Help with a DC Motor
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Posts: 46,084
I have an upcoming project for school in which I must make a small
autonomous vehicle. I was wondering if I will be able to run a
couple of small 6v to 12v dc motors directly off of a basic stamp
1. The motors would also have to shut down and stop in certain time
designations and could run at just one speed. Is this at all
possible and would this be the best way to go about a process like
this? Any help at all would be much appreciated as I dont even know
where to even start.
autonomous vehicle. I was wondering if I will be able to run a
couple of small 6v to 12v dc motors directly off of a basic stamp
1. The motors would also have to shut down and stop in certain time
designations and could run at just one speed. Is this at all
possible and would this be the best way to go about a process like
this? Any help at all would be much appreciated as I dont even know
where to even start.
Comments
>I have an upcoming project for school in which I must make a small
>autonomous vehicle. I was wondering if I will be able to run a
>couple of small 6v to 12v dc motors directly off of a basic stamp
>1. The motors would also have to shut down and stop in certain time
>designations and could run at just one speed. Is this at all
>possible and would this be the best way to go about a process like
>this? Any help at all would be much appreciated as I dont even know
>where to even start.
Do a web search for "H-Bridge" and you'll have the beginnings of what you need.
You can make one yourself, or kits are available.
Bruce Bates
you just need to turn on power to them, if you need to reverse, you need an
H bridge circuit. Or, you can just wire a dpdt relay to do the reversal and
control the relay with a singe output from the stamp.
Check out this web site for boards, schematics, wiring to output devices,
etc. http://www.geocities.com/jimforkin2003/
jim
Original Message
From: Bruce Bates [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=r7TZuVV2vQKfw7UVh4nSZ0IprOYYdANwRH4g3dTikz1ST9uQbOvKS1-VJ46mAai7PtNJqtFNXuhONkUGw64]bvbates@u...[/url
Sent: Sunday, February 29, 2004 7:04 PM
To: basicstamps@yahoogroups.com
Subject: Re: [noparse][[/noparse]basicstamps] Help with a DC Motor
At 08:47 PM 2/29/04 +0000, Mark wrote:
>I have an upcoming project for school in which I must make a small
>autonomous vehicle. I was wondering if I will be able to run a
>couple of small 6v to 12v dc motors directly off of a basic stamp
>1. The motors would also have to shut down and stop in certain time
>designations and could run at just one speed. Is this at all
>possible and would this be the best way to go about a process like
>this? Any help at all would be much appreciated as I dont even know
>where to even start.
Do a web search for "H-Bridge" and you'll have the beginnings of what you
need.
You can make one yourself, or kits are available.
Bruce Bates
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im not shouting. I can read and type all caps much easier than lowers.
Re dc motor control with relays.
How about using 2 spdt regular or latching relays.
Put the motor between the moving poles.
Put + dc on the normally closed contacts and - dc on the normally open
contacts.
To run one direction close ry1 and to run other direction close ry2.
It both are closed "or" both are open the armature of the motor is
shorted.
In "some types" of motors this applys braking to the motor and it
quickly stops and can be used to great advantage.
I have used this method many times in motors on mobile antenna tuners
and it works great.
73 spence