Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Good use for an old stepper motor------>use as an encoder

Status
Not open for further replies.

JabaThaSlut

Junior Member level 1
Joined
Apr 16, 2001
Messages
17
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
285
old stepper motor on sale

On my travels I came across this little gem :D

http://www.webx.dk/oz2cpu/20m/encoder.htm

Very nice idea for times when fairly hi resolution input method is needed. And best of all its cheap, most parts are probably in your junkbox.

Have fun

Jaba
 

robotman

Member level 3
Joined
Jan 11, 2002
Messages
60
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
693
use stepper as encoder

This is a great idea! I think that it works well for hand knob.

For robotic applications, it would not work well unless you overspec the driving motor. The overall moment of the armature and some of the magnetic effects would make it tough to use.

robotman
 

PeterG

Junior Member level 2
Joined
Feb 12, 2002
Messages
21
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
98
stepper motor gem

Hi Jaba,

Thx a lot for the link. Very nice (and very useful) idea!

Cheers,

Peter Gabriel :)
 

johnseven

Junior Member level 3
Joined
Jul 17, 2002
Messages
26
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Location
California
Activity points
187
richardh rotenc

JabaThaSlut said:
On my travels I came across this little gem :D

http://www.webx.dk/oz2cpu/20m/encoder.htm

Very nice idea for times when fairly hi resolution input method is needed. And best of all its cheap, most parts are probably in your junkbox.

Jaba
Addition. If you read the article you'll understand.
For the "heavy knob" the author built, you can also use the flywheel found
in old radios, or in cassette recorders.
j7
 

felix1200

Junior Member level 3
Joined
Dec 31, 1999
Messages
29
Helped
2
Reputation
4
Reaction score
2
Trophy points
1,283
Activity points
207
how to use encoder stepper motor

Some years ago I built a similar circuit and made my experiences with it.
This kind of incremental sensor was only usful for armature application. It worked not so fine when the rotation was very slow.
When someone uses stepper motors with 4-coils a snap-in effect can be made by contact the not used coils together.
Make a simple short circuit to the not used coils.
An advantage is:
The output voltage of the used 2 coils increases (because of acceleration during snap-in effect) and the slow rotation sensitivity is much better.

Regards
felix1200
 

Status
Not open for further replies.
Toggle Sidebar

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top