Scramble boost how to?

[jasaircraft]

Hi, on a m800pnp here, I want to install a scramble boost button,
That is a button that when pressed will give you either your max boost or max sol duty cycle for a programmed amount of time.
How could I set this up?

[Scott@FP]

Use a switched input, the switched input starts either Timer 1 or Timer 2, use the Timer as an axis in one of the Boost Comp tables to add DC%.

[jasaircraft]

Great! Thanks Scott! Although I tought there was only one boost comp table...

[jasaircraft]

Ok so Im trying to set this up right now, I want it to work with a momentary switch to ground on the steering wheel.

So I go:
General Setup>Timers>Timer1 Selection to 38(AT5), Timer status to 1 (runs when status channel active), Timer1MAx 20sec.

Dig input Functions>Sw In5(AT5)>Off

Sensor Setup>Input setup> User tab> User channel2 (should I set this to AT5 and 0v to 5v?? ) Should I use User channel2 as an axis vs time on the Comp2 table? I cant add an axis on comp2

Functions>Boost Ctrl> Comp2> Select Timer1 as the only axis (check non sensor channels). I put a 30 value from 0sec to 20sec.

So what am I missing?
I havent tested this yet...

[Scott@FP]

Ok so Im trying to set this up right now, I want it to work with a momentary switch to ground on the steering wheel.

So I go:
General Setup>Timers>Timer1 Selection to 38(AT5), Timer status to 1 (runs when status channel active), Timer1MAx 20sec.

Now when you push the switch Timer 1 should start, BUT it will shut off again when the switch goes high (switch released) again, you need to use switch logic 0, runs when switch inactive. Since this is a momentary switch pulled to gnd, when you press the switch it resets, then when you release it the timer starts until your timeout setting, and stays at your timeout setting, then resets when you push the switch again. You can view timer status to verify.

Dig input Functions>Sw In5(AT5)>Off

In Switch Setup make sure your source and levels are appropriate.

Sensor Setup>Input setup> User tab> User channel2 (should I set this to AT5 and 0v to 5v?? ) Should I use User channel2 as an axis vs time on the Comp2 table? I cant add an axis on comp2

Should not need to use a User channel, just use 'Timer 1' as an axis, select the check box that says "show non-sensor channels" when you go into axis setup, Timer 1 should then show up.

Functions>Boost Ctrl> Comp2> Select Timer1 as the only axis (check non sensor channels). I put a 30 value from 0sec to 20sec.

So what am I missing?
I havent tested this yet...

Boost Comp 1 (single axis) and 2 (3D) are Duty Cycle percentage trims (multiplier or divider) from current DC%, if you want say a 30 kpa increase you will need to test what positive DC% trim results in that. If your current BCS output duty % is 60%, and your comp table is -50%, your BCS output then goes to 30% DC.

For your 2D axis, on axis setup fill in timer values from 0 to whatever, say you want 20 seconds of 'scramble', one column is timer value 0, one timer value 20, both with desired % increase, then add a timer value 21 column with a zero trim value. You don't want to have your far right timer axis value the same as the timer timeout value as it does not reset, but sits at its max timeout value until the reset conditions (pushing the button) are met, so for a max scramble time of 20 seconds, make sure the timer timeout value is more than 22 seconds, and the last table column turns off the scramble before it times out. Its sort of confusing logic at first, but you can test it without driving just by watching the timer.

[jasaircraft]

Ohhh ok! Thanks again scott! Ill try that tomorrow...

[jasaircraft]

Ohhh ok! Thanks again scott! Ill try that tomorrow...

[jasaircraft]

Ok so I managed to do everything as suggeseted, and it works.

The timer is always running with logic polarity of 0.
So whenever you first start the car or power up the ecu it will run up to its max timout value (25sec) and sit there.
The boost comp% increase goes from second 1 to second 20. With "0%" values on second 0 and second 21,25,30

I tried putting a max timout of 40sec and it would sit at 40ses, 25sec max out also sits at 25, but I guess that is normal and it wont affect it much really.

So when you give earth to pin AT5 it will reset the timer and you got extra boost for 20sec

Thanks Scott!