Need help figuring out a sysex string

[ats]

I’m trying to get a knob to simulate clockwise movement and counterclockwise movement
so i can step through forward & backwards the menu choices on my device.

I have a background image of the front of the device set on the panel and placed two uifixedimageslider (rotarys) not visible on the top half and bottom half of the picture of the knob. I figured out a string to scroll through clockwise using the bottom rotary
but can’t get the top one to scroll through counter clockwise.

the string i have working is F0 06 07 7f 14 00 ls ms 00 00 f7
can anyone tell from the knob midi spec (attached ) how to send it counterclockwise?

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[Puppeteer]

You’ll need to set bytes 7-10 as the 2’s complement – https://en.wikipedia.org/wiki/Two%27s_complement

Basically it’s a 16 bit number set as 4 nibbles.

Easiest way to experiement is to set byte 10 to a value of 8 (decimal). This should.

Basically you’ll need to set the first (most significant) bit to 1 for -ve numbers.

The Puppeteer
http://godlike.com.au

[ats]

Thanks Puppeteer i’ll have a look at that and try what you suggested. Really appreciate it

[Author]

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