Maker Pro
Maker Pro

rotary encoder or an incremental encoder sensor

T

Todd

Jan 1, 1970
0
I'm looking for make a rotary encoder or an incremental encoder. I
bought a IR transmitter receiver from sparkfundotcom.

I was hoping to use it to detect black and white transitions on a black
and white vinyl decal. But it really didnt work. The problem is that
the lines are pretty small. They are about .070 wide/thick. .070"
black line, .070" white line, .070" black line, etc. I was thinking of
getting the the QRB1134 phototransistor detector kit but it has to be
at least .250 inches wide/thick.

It is found here.
http://www.superdroidrobots.com/product_info/QRB113x.pdf

I have to get something that can see smaller lines. The transition
lines (black to white) would be travelling pretty fast so resolution is
critical. Do you have any suggestions on something I can buy to see
these lines? I sure would appreciate any input that you might have.
Please be specific. If you don't want to post, please send me an email
at [email protected] so we can talk further.

Thanks alot,

Todd
 
H

Homer J Simpson

Jan 1, 1970
0
I have to get something that can see smaller lines. The transition
lines (black to white) would be travelling pretty fast so resolution is
critical. Do you have any suggestions on something I can buy to see
these lines? I sure would appreciate any input that you might have.

How about an optical mouse?
 
D

Dave

Jan 1, 1970
0
Todd said:
I'm looking for make a rotary encoder or an incremental encoder. I
bought a IR transmitter receiver from sparkfundotcom.
It is found here.
lines (black to white) would be travelling pretty fast so resolution
is critical. Do you have any suggestions on something I can buy to
see these lines? I sure would appreciate any input that you might
have. Please be specific. If you don't want to post, please send me
an email at [email protected] so we can talk further.

Thanks alot,

Todd

Use the Moire effect by placing another (fixed) grid of lines on top of the
first, slightly angled. The moving patterns will cover a larger area and be
easier to detect

Dave
 
R

Roger Hamlett

Jan 1, 1970
0
Todd said:
I'm looking for make a rotary encoder or an incremental encoder. I
bought a IR transmitter receiver from sparkfundotcom.

I was hoping to use it to detect black and white transitions on a black
and white vinyl decal. But it really didnt work. The problem is that
the lines are pretty small. They are about .070 wide/thick. .070"
black line, .070" white line, .070" black line, etc. I was thinking of
getting the the QRB1134 phototransistor detector kit but it has to be
at least .250 inches wide/thick.

It is found here.
http://www.superdroidrobots.com/product_info/QRB113x.pdf

I have to get something that can see smaller lines. The transition
lines (black to white) would be travelling pretty fast so resolution is
critical. Do you have any suggestions on something I can buy to see
these lines? I sure would appreciate any input that you might have.
Please be specific. If you don't want to post, please send me an email
at [email protected] so we can talk further.

Thanks alot,
Look at the HLC2705.
This is part of a normal 'mouse' encoder, comprising two detectors in one
package, and designed to work with a line spacing down to 0.036". It needs
a seperate illumination source, but is small, and already contains
step/direction decoding internally. It can be used with reflective
surfaces (but is primarily designed for transmissive use).

Best Wishes
 
C

colin

Jan 1, 1970
0
Todd said:
I'm looking for make a rotary encoder or an incremental encoder. I
bought a IR transmitter receiver from sparkfundotcom.

I was hoping to use it to detect black and white transitions on a black
and white vinyl decal. But it really didnt work. The problem is that
the lines are pretty small. They are about .070 wide/thick. .070"
black line, .070" white line, .070" black line, etc. I was thinking of
getting the the QRB1134 phototransistor detector kit but it has to be
at least .250 inches wide/thick.

It is found here.
http://www.superdroidrobots.com/product_info/QRB113x.pdf

I have to get something that can see smaller lines. The transition
lines (black to white) would be travelling pretty fast so resolution is
critical. Do you have any suggestions on something I can buy to see
these lines? I sure would appreciate any input that you might have.
Please be specific. If you don't want to post, please send me an email
at [email protected] so we can talk further.

I think you may need a graticule, or at least a narrow slit.
Im thinking of making a graticule myself with .08mm pitch using some 0.04mm
relay wire.

Colin =^.^=
 
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