how to midify a Roland sh101 with velocity control?

[xarolium]

how to midify a Roland sh101 with velocity control?

all is in my question

thank you

[henrygr]

Would http://beam.to/midi303 be an answer?

[xarolium]

thank you for the link but i want to do it myself this project and

i want to know if it's possible

[jimhenry]

It is possible if you are prepared to do some programming and engineering. One way to sense velocity is to have two contacts that close at different points in the key travel. You measure the time to go between the two contacts to determine velocity. As far as I know, no one has done that yet with a MIDIbox.

[docbrown]

You measure the time to go between the two contacts to determine velocity. As far as I know, no one has done that yet with a MIDIbox.

I'm just a curiuos bee.. Is that how most keyboard mfg senses key velocity? thanks..

[stryd_one]

QBAS has  :D

I'll be publishing his driver on the Wiki soon, stay tuned....

Regarding the midification of the 101... You'd be pretty much crazy to reinvent that wheel. Why would you want to DIY it?

[stryd_one]

I'm just a curiuos bee.. Is that how most keyboard mfg senses key velocity? thanks..

Most, but not all.

It's the cheap way, because it just needs an extra switch. But velocity is really about how hard you hit the key, not how fast (yes, I know, the name suggests otherwise, but remember it's about playing piano...) and the two-switch method measures speed, not pressure - they are obviously related, but not the same.

More expensive controller keyboards use all kinds of other methods which are designed for them in particular and are priced accordingly.