Optical mouse sensor as position feedback February 19, 2016 12:30PM |
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Re: Optical mouse sensor as position feedback February 19, 2016 06:21PM |
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Re: Optical mouse sensor as position feedback February 19, 2016 07:29PM |
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Re: Optical mouse sensor as position feedback February 20, 2016 03:01AM |
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Re: Optical mouse sensor as position feedback February 20, 2016 03:39AM |
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Anonymous User
Re: Optical mouse sensor as position feedback February 21, 2016 05:27AM |
Re: Optical mouse sensor as position feedback February 23, 2016 07:19AM |
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Re: Optical mouse sensor as position feedback March 05, 2016 07:46PM |
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Re: Optical mouse sensor as position feedback March 06, 2016 06:46AM |
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Re: Optical mouse sensor as position feedback March 06, 2016 02:03PM |
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Well, I simply took a permanent marker and marked a line on the place the belt was entering the jig above.Quote
Frans@France
What do you mean with "draw a line on the belt"?
Most probably. Unfortunately, it seems that it's a "feature" of the encoder - to provide somehow better feeling for the mouse user - as you move your hand faster, it tends to gradually increase the steps in random numbers to deliver "better feedback". For a mouse user, this feels like better responsiveness. For my purpose, it's total no-go.Quote
Frans@France
Could it be because of the acceleration profile at higher printer speeds that it's missing "steps"?
Yes, I did, but as the belt was moving through the jig above, the X direction was -1 to 1 tops, usually 0 until I pulled seriously hard to one side and back.Quote
Frans@France
PS Did you readout all directions? If the sensor is not 100% in line with the belt then you need to combine the x and y data
Re: Optical mouse sensor as position feedback March 06, 2016 05:27PM |
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Re: Optical mouse sensor as position feedback March 06, 2016 06:18PM |
Registered: 10 years ago Posts: 550 |
I thought that that normally is a OS mouse driver setting that the user can tune and the optical chip just reports counts.Quote
rklaucoMost probably. Unfortunately, it seems that it's a "feature" of the encoder - to provide somehow better feeling for the mouse user - as you move your hand faster, it tends to gradually increase the steps in random numbers to deliver "better feedback". For a mouse user, this feels like better responsiveness. For my purpose, it's total no-go..Quote
Frans@France
Could it be because of the acceleration profile at higher printer speeds that it's missing "steps"?
Re: Optical mouse sensor as position feedback May 05, 2016 12:53AM |
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Re: Optical mouse sensor as position feedback May 31, 2016 04:11PM |
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Re: Optical mouse sensor as position feedback June 01, 2016 07:56AM |
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Re: Optical mouse sensor as position feedback September 06, 2016 03:21AM |
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Re: Optical mouse sensor as position feedback September 08, 2016 11:50AM |
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Re: Optical mouse sensor as position feedback September 09, 2016 05:43AM |
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Re: Optical mouse sensor as position feedback September 09, 2016 07:46AM |
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Re: Optical mouse sensor as position feedback September 09, 2016 02:42PM |
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Re: Optical mouse sensor as position feedback September 16, 2016 09:15AM |
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Quote
rklauco
It's gonna be cheaper to buy the optical strip and sensor as used in 2D printers then.
Re: Optical mouse sensor as position feedback September 16, 2016 09:25AM |
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Re: Optical mouse sensor as position feedback September 17, 2016 05:13PM |
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Re: Optical mouse sensor as position feedback September 20, 2016 09:41AM |
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Quote
DaGameFace
Neat, wonder how how involved setting up those encoders in firmware is..
Re: Optical mouse sensor as position feedback September 20, 2016 11:10AM |
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Re: Optical mouse sensor as position feedback September 30, 2016 06:30AM |
Registered: 8 years ago Posts: 109 |
Quote
rklauco
Yeah, correct.
But I went another way.
I measured how many pulses I need for 100mm movement and adjusted the firmware steps/mm values accordingly.
Problem for the tiny MCU (I used 3 ATtiny85s in the video) is that it is not fast enough to count the high-frequency incoming pulses from both the electronics and the motor.
But for small applications such as the 3D printer in my video (modification of ToyRep printer), this works great.
Re: Optical mouse sensor as position feedback September 30, 2016 08:21AM |
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Re: Optical mouse sensor as position feedback December 05, 2016 04:37AM |
Registered: 7 years ago Posts: 9 |
Quote
MechaBits
Sounds Like a good idea, people keep saying it's expensive to implement, but after seeing this video the other day I thought perhaps its time to start thinking more about rotary encoders.
Re: Optical mouse sensor as position feedback December 05, 2016 04:47AM |
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Re: Optical mouse sensor as position feedback December 08, 2016 09:34AM |
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