Author Topic: Launch control with potentiometer  (Read 7906 times)

Offline Sam8888

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Launch control with potentiometer
« on: March 16, 2016, 06:01:21 pm »
Hi everyone!

I'm planning to control the launch control RPM with a pontentiometer to anytrim input. I wonder what's better for the job:

This is with a simple 10K linear potentiometer:



Or with a voltage divider, wich looks like this:



How you guys used to do that?

Offline Sam8888

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Re: Launch control with potentiometer
« Reply #1 on: March 21, 2016, 09:10:03 am »
Anybody? Nobody did the adjustable launch control?  ???

Offline Kamuto

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Re: Launch control with potentiometer
« Reply #2 on: March 21, 2016, 09:10:56 am »
that's not the way you do it :)
I mean, why there is a pushbutton?
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Offline Sam8888

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Re: Launch control with potentiometer
« Reply #3 on: March 22, 2016, 08:27:03 pm »
that's not the way you do it :)
I mean, why there is a pushbutton?

Because i want to activate it on the same circuit. In this way it's only need 1 analog input. When i wire the button to another input, then the launch control will be using 2.

So if i push the button -> launch control activated to the adjusted RPM (which i  can adjust with the potentiometer).
If i release the button -> launch control deactivated.
« Last Edit: March 22, 2016, 08:30:11 pm by Sam8888 »

Offline Sam8888

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Re: Launch control with potentiometer
« Reply #4 on: March 24, 2016, 11:31:17 am »
Sooooooo? Nobody? Really?  ???

Offline jrussell

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Re: Launch control with potentiometer
« Reply #5 on: March 24, 2016, 03:25:03 pm »
I'm not so sure that both of these functions can use the same input. Enable and adjust at the same time. Maybe it will work?

Personally, I'd try it with the first diagram, as the voltage divider will just make the control less granular. That may be an advantage at the end, but try without the voltage divider first.
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Offline fphil

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Re: Launch control with potentiometer
« Reply #6 on: March 24, 2016, 05:24:53 pm »
I see the 2 diagrams as voltage dividers with about the same scale(0-5V or 0-4.9V) but I may have missed something.

Offline Sam8888

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Re: Launch control with potentiometer
« Reply #7 on: March 24, 2016, 06:17:10 pm »
I'm not so sure that both of these functions can use the same input. Enable and adjust at the same time. Maybe it will work?

Personally, I'd try it with the first diagram, as the voltage divider will just make the control less granular. That may be an advantage at the end, but try without the voltage divider first.

Thanks for the reply! I guess i will do it on the separate way then. I thought it will work on one input that way, don't wanna experiment with.