need help reading jogwheel datasheet

Parts Questions
1

I have this jog/shuttle-wheel and I want to build it into my midibox lc.

I do not understand the meaning of the different pins in the datasheet.

http://www3.alps.co.jp/WebObjects/catalog.woa/PDF/E/Switch/Encoder/SRGP/SRGP.PDF

can anybody help me with this?

cheers,

rambinator

2

Hi.

It’s all here: http://www.midibox.org/forum/index.php?topic=3852.0

Moebius ;D

3

Thanks, I thought I was the first one to find this thing :slight_smile:

So it seems that only the jog-part is usefull for mblc

4

So it seems that only the jog-part is usefull for mblc

Yup - with no code modifications… but a clever coder would scan for the shuttle ring position and then send jog wheel messages with different speeds (per amount of turn) to emulate shuttle :smiley:

I’m no clever coder, M

5

hmmm. maybe for another project, but on the midibox lc there are no spare dins for such gimmicks.

6

hmmm. maybe for another project, but on the midibox lc there are no spare dins for such gimmicks.

Are You sure?

Shuttle outputs (I think it’s called) so called grey code: Only 4 additional din pins are needed. One for direction and other 3 others have various bit patterns for different rotation angles.

Moebius

7

Hi!

I would be very happy if someone could code something for the shuttle ring.

I started experimenting with 74HCxx chips (Inverter and NOR) to get direction and position. Not very elegant though and space consuming.

I am no assembler coder and don’t know how much effort this would be. I am thinking of emulating a pot with the shuttle (with jumps of course)

Regards

Michael