Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: aruna1 on September 27, 2008, 09:22:47 PM

Title: This motor i found
Post by: aruna1 on September 27, 2008, 09:22:47 PM

i found this motor when i clean my junks.i bought it long time ago and don't remember which type or ow much voltage it requires to operate (I gave 9v supply and motor started).do you think i can use this motor to robot I'm going to make.
can we use cassette motors to run wheels of robot? (i mean will they give enough power and can they be controlled[rotate in specific speed or rotate to a specific angle] using a PIC and motor driver circuit)

here I'm  attaching some photos of the motor
 ???

Title: Re: This motor i found
Post by: Trumpkin on September 28, 2008, 02:52:48 PM

Why do you have the tabs labeled?

Title: Re: This motor i found
Post by: aruna1 on September 28, 2008, 05:11:45 PM

i dont know have done it long time ago ???

Title: Re: This motor i found
Post by: Trumpkin on September 28, 2008, 05:42:06 PM

You might or might not be able to use cassette motors depending on how much torque they have.

Title: Re: This motor i found
Post by: aruna1 on September 28, 2008, 05:53:01 PM

well at least can i control cassette motors? i mean can i rotate them to specific angles using a motor control and a PIC?

Title: Re: This motor i found
Post by: paulstreats on September 28, 2008, 05:58:48 PM

you cant rotate them to specific angles unless you use an encoder system. Also you will need a gearing system to convert their speed into torque. Even the tape deck that you took them from will have a gearing system. If you do connect motors to a PIC then remember that you need to do it through an H-bridge.

So what you need to move motors to specific angles:

Controller such as PIC
H-Bridge
Gears
Encoder

Title: Re: This motor i found
Post by: aruna1 on September 28, 2008, 06:02:45 PM

Quote from: paulstreats on September 28, 2008, 05:58:48 PM

you cant rotate them to specific angles unless you use an encoder system. Also you will need a gearing system to convert their speed into torque. Even the tape deck that you took them from will have a gearing system. If you do connect motors to a PIC then remember that you need to do it through an H-bridge.

So what you need to move motors to specific angles:

Controller such as PIC
H-Bridge
Gears
Encoder

well can you point me to a proper tutorial about encoder system and gearing system?(I'm new to robot and haven't use encoders or gears before)

Thanks

Title: Re: This motor i found
Post by: paulstreats on September 28, 2008, 06:07:38 PM

Here are some guides to get you started:

http://www.societyofrobots.com/actuators_dcmotors.shtml (http://www.societyofrobots.com/actuators_dcmotors.shtml)
http://www.societyofrobots.com/schematics_dcmotorbraking.shtml (http://www.societyofrobots.com/schematics_dcmotorbraking.shtml)
http://www.societyofrobots.com/schematics_h-bridgedes.shtml (http://www.societyofrobots.com/schematics_h-bridgedes.shtml)
http://www.societyofrobots.com/sensors_encoder.shtml (http://www.societyofrobots.com/sensors_encoder.shtml)

Title: Re: This motor i found
Post by: ArcMan on September 28, 2008, 07:37:43 PM

If you want a small motor that will rotate to specific angles, just buy a hobby servo...

Unless, of course, you're doing it for the joy of it.  :)

Title: Re: This motor i found
Post by: aruna1 on September 30, 2008, 09:34:23 PM

Quote from: paulstreats on September 28, 2008, 06:07:38 PM

Here are some guides to get you started:

http://www.societyofrobots.com/actuators_dcmotors.shtml (http://www.societyofrobots.com/actuators_dcmotors.shtml)
http://www.societyofrobots.com/schematics_dcmotorbraking.shtml (http://www.societyofrobots.com/schematics_dcmotorbraking.shtml)
http://www.societyofrobots.com/schematics_h-bridgedes.shtml (http://www.societyofrobots.com/schematics_h-bridgedes.shtml)
http://www.societyofrobots.com/sensors_encoder.shtml (http://www.societyofrobots.com/sensors_encoder.shtml)

thanks i'll try