Using a digital input to ramp up

General
1

Hey I have a question about a ramp up i'm trying to create.

case : I have a speedcontroller -10 to +10V regulated. i want to use a potmeter to set the nominal speed. (value X) but before reaching that value, I would like a ramp up and ramp down set with a time value (time to nominal speed).

I found a "ease" node, that contains all the fancy ramps i need, but having a digital pin start a ramp up, nominal -> until the Digital Pin changes to false and then ramp down.

curious if this is possible!

2

There are digital potentiometers that may help. Without offering anything specific if you use one of those you could hit it with a PWM or a climbing and descending digital number to vary resistance depending on which digipot you use. I can see a fairly simple function node there but there may be better nodes available.

3

Do you want a set time or a fixed ramp rate?
A fixed ramp rate to a value is easier.

4

it's over time.

but i found the functionality of the ease node, this works well, only that i need to be able to set the parameter without it starting :slight_smile:
now when i throw a JSON at it to set the values, it start directly.
am i correct assuming I need to start it always with a json?

5

That is a pity as I have a flow that you can send a value to and it will go from the current value to the new value at a defined rate, then you can send it another value and it will ramp to that one.

I don't know anything about that node.

6

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