Optical Sensor for Encoder/Jogwheels

[Marxon]

Hi TK and all others,

while browsing the web for different jogwheel/encoder types

i found some interesting projects about using the sensor chip from an optical mouse.

http://ferretrobotics.blogspot.de/2011/01/interfacing-optical-mouse-usb-with-pic.html

and here more technical informations:

http://www.ele.uva.es/~pedro/optoele/LEDs/Appnotes/opticalMouse.pdf

http://www.avagotech.com/docs/AV02-1184EN

Would this not give more then enough resolution?

The Chip seems to be useable without additional circuits.

It uses a ps/2 and a quadrouble output mode.

Unfortunatelly i do not have the knowledgement to create a

midibox compatible peace of hardware in reality.

But maybe someone can use this informations ;)

Best regards

Marxon

[TK.]

The encoder wheel of a mouse can already be scanned fast enough (the scan rate is 1 mS)

You only need to add a schmitt trigger after the encoder outputs to ensure proper digital signals

Best Regards, Thorsten.

[Marxon]

The encoder wheel of a mouse can already be scanned fast enough (the scan rate is 1 mS)

You only need to add a schmitt trigger after the encoder outputs to ensure proper digital signals

Best Regards, Thorsten.

Thanks, got it working! :ahappy:

I disassembled an old mouse, used a 74HC14 schmitt trigger and connected it to my SeqV4: