How to dim LED with LED64?

[Jan Pemöller]

Hi,

first thanks to Alan for his mail! I will get it to work ... but how can I tell the LED64 card to light the LED only 25% . We need this in the overheadpanel of the 737NG.

Thanks
Jan

[alandyer]

Jan,

The brightness calibration upgrade has been in testing phase ladt few days.
Will be releasing version tomorrow with this feature.

Regards,
Alan.

[Jan Pemöller]

Thanks Alan,

is it controlled by PM System or do I have to connect the LED to an additional new port?

Jan

[alandyer]

you will not extra port.
Keine ekstra port.

[Jan Pemöller]

Hi Alan,

is the new version allready available?

Have a great Sunday
Jan

[alandyer]

Forgot Superbowl is on this weekend.
Running late.
Will post later this evening.

Go Patriots!

[alandyer]

Version 2.1 is available for download.

First make copy of your FS2Phidget folder.

The calibration screen now has a slider that will allow you to interactively set brightness.

The usual sliders to set the Illumination range, based on FS Value, are still present.

Near bottom of calibration screen there is "Dim Range..." button.

Pressing this button presents you with a screen that enables you to specify a Dim Range within the Illumination range.
You can set the Brightness interactively for the Dim Range.




There is another new feature that enables you to set digital output based on RATE at which FS Value is changing.
There are 2 new check-boxes on the main screen for this.

Try this:
Assign a digital output with an LED attached to TRIM_CONTROL.
Then check the RATE (Positive) box.
When you move FS Trim Control in one or the other direction the digital output LED should illuminate.
When FS Trim Control is not moving LED will extinguish.
Now, check the RATE (Negative) box.
When you move the FS Trim Control in the opposite direction the LED illuminates.

Regards,
Alan.

[Jan Pemöller]

Hi Alan,

is it possible to set the brightness to an annuncicator offset:

FUNCTIONAL DESCRIPTION - FUEL CROSSFEED VALVE
General
The fuel crossfeed valve switch controls the crossfeed valve. When you move the switch to the open or closed position, 28v dc power goes through a switch assembly to the actuator. The actuator then moves the crossfeed valve to the applicable position.
The printed circuit card assembly controls the operation of the crossfeed valve open light. The printed circuit assembly receives fuel crossfeed valve position and fuel crossfeed valve switch position information.
When the fuel crossfeed valve is closed, the crossfeed valve open light is off (zero volts). When the fuel crossfeed valve position and fuel crossfeed valve switch position disagree, the crossfeed valve open light is on bright (twenty eight volts). When the fuel crossfeed valve is open, the crossfeed valve open light is on dim (sixteen volts).


OFF 0 vdc CROSSFEED VALVE IS CLOSED
DIM 16vdc CROSSFEED VALVE IS OPEN
BRIGHT 24vdc CROSSFEED VALVE IS IN TRANSIT
OR VALVE AND SWITCH DISAGREE

you sample was an axis (trim).

Thanks
Jan

[FuelCrossFeed]
Offset=56B2
Length=2
FSType=Bitmap
Bit=0

[CrossFeedOpen]
Offset=56B3
Length=2
FSType=Bitmap
Bit=0

[alandyer]

Did you try it ?

Had a look at pmSystems.
Crossfeed switch and Valve annunciator both share the same bitmapped offset.
A Bit can be in TWO states only.
On or OFF.
Don't know how we are are going to squeeze 3 states from binary value ?

[imported_737nut]

Yes, you are correct Alan.

The offset is there, Enrico just needs to let us know what it is. Or at least add it.

[alandyer]

I have been speaking with folks at PM.
They are looking into it.

[Jan Pemöller]

Great --- We Will Wait ;-))))

[alandyer]

Jan,

Did you try dimness and brightness settings for LED64 ?

Alan.

[alandyer]

Jan,

Did you try dimness and brightness settings for LED64 ?

Alan.

[Jan Pemöller]

Alan,

pls explane how to do that?
Is it possible with FS2phidgets?

Jan

[alandyer]

Jan,

Do you have LED64 card and latest copy of FS2Phidget ?

Alan.

[Andras]

Do you have LED64 card and latest copy of FS2Phidget ?


Hi Alan,

I do have them, but also have no clue how to do it.
Ok, I can get the leds dimmer decreasing the max, but what triggers the dim state? Pls give some explanation if possible.

Andras

[Jan Pemöller]

Hi Alan,

same thing here ... ;-)
Pls give an example.

Jan

[alandyer]

An updated tutorial and explantion of INI file are going onto web site shortly.

[alandyer]

Download latest tutorial.
Let me know if this covers dimming LEDs accurately.

The dim state is triggered by range of values coming from FS.
This range falls within the on state you defined.
This range is set by yourself.

For example,
Left landing gear has values ranging from 0 to 16383
where 0=full up, 16383=full down

Let us assume:
You have assigned gear to an LED on LED64 card.
You have calibrated ON range from 4000 to 16383 so that the LED illuminates when gear is between 1/4 down and full up.
You have set brightness to 100%

Now you calibrate dim range, within above ON range, from 4000 to 8000.
And you set brightness to 20%.

Now as gear extends:
LED will be OFF until 1/4 extended.
Then will illuminate at 20% brightness until 1/2 extended.
When extended from 1/2 to full down LED will remain illuminated, but at 100%

The dim range could be set 100% and On range to 50%.
The dim range is a misnomer - should really be:
Alternative Brightness Within On Range.

Alan.