Drive the spindle speed with a rotary encoder knob

I see that there are no halui pins for controlling the spindle speed with a number (like for example, the halui.jog-speed), only halui.spindle.increase and halui.spindle.decrease pins.
I want to change the spindle speed with a rotary encoder knob, but I can't find a suitable component that takes an s32 value and outputs up/down pulses. Any ideas?

how about spindle over ride pins?

We could probably add pins to master for this, just not sure if its a good idea yet.
Is this for manual machining?
Are you expecting to start and stop with this knob?
Why this knob and not the override knob?

Chris M

We have also added a knob that changes the spindle override. The Bridgeport has no longer the original spindle controls, so the friend who owns it wants to be able to change the speed without using the keyboard or mouse when doing manual machining or sending MDI commands.

I finally realized that I could use a stepgen and up/down pulses driven by the encoder. Works fine ..

cmorley wrote:

We could probably add pins to master for this, just not sure if its a good idea yet.

Why is this not a good idea yet Chris?

It is difficult to decide how it should work with other pins.

eg if using the proposed pins to operate the spindle, what happens if the pin increase is used?

now one pin says it should be 500 rpm yet it is operating at 600 rpm because of the increase pin.

The only way that makes sense (to me) is if we have a pin for 'starting rpm' and then the forward pin uses that info to start the spindle at that rpm.

so to change the rpm you would change the 'starting rpm' pin and toggle the spindle forward pin....

Chris M

cmorley wrote:

It is difficult to decide how it should work with other pins.

eg if using the proposed pins to operate the spindle, what happens if the pin increase is used?

now one pin says it should be 500 rpm yet it is operating at 600 rpm because of the increase pin.

The only way that makes sense (to me) is if we have a pin for 'starting rpm' and then the forward pin uses that info to start the spindle at that rpm.

so to change the rpm you would change the 'starting rpm' pin and toggle the spindle forward pin....

Chris M

or start the spindle and use the increase / decrease pins.

Or he uses an MPG to control the spindle and the counts of the MPG are connected to a component that checks the differnce and "send" the desired amount of increase or decrease signals.

Norbert