Gear Down Indication

[Dynon101]

I've read 7-60 of the Installation Manual however I still am unsure of the answer so IF you can PLEASE help I would greatly appreciate it.

I have a Velocity RG and I want the SV to display two green round circles when the gear is down and locked and two hollow circle when the gear is other than down. I do not need an up or in transit indication because I will be running the SV in parallel with the Velocity gear system and this system already has these other indicators.

The Velocity only has two down LEDs (a nose wheel LED and a main wheels LED because the main gear operate as a single unit) so I will tap into the EMS pins 11 and 12 for these two gear down signals.

The wires I am tapping into are cold when the gear is up and hot (12 VDC) when the gear is down so I need to setup the widget to show a hollow circle on the screen when the respective pin sees 0 VDC and it needs to show a green circle when the respective pin sees 12 VDC.

I also need to learn how to setup the widget so that it will sound and show a GEAR warning if the airspeed is below 90 knots with the gear not down and also show and sound a GEAR warning if the airspeed is above 120 knots with the gear still down.

THANKS for your help!!!

 

[dynonsupport]

Sounds like you have the hardware configured correctly, so all you need is software setup.

Page 7-70 covers this pretty directly.

Go to pin 11 in SENSOR INPUT MAPPING and make it a contact with the name GEAR.
Go into Sensor Setup and find GEAR
Make one state 0-2.5V, call it UP
Make the other state 2.5V-5V (you'll read 5V when it's at 12V because 5V is as high as we can read). Call it DOWN
Go into SCREEN LAYOUT EDITOR and place the widget where you want on the screen.
Go into AIRCRAFT INFORMATION and set up your plane as a retract and set your speeds

Now, you have two inputs. SkyView doesn't know how to read two GEAR inputs and make sure both are up or down. So for the nose gear you'll need to call it something else (NGEAR?) and then set it up the same way. But if this gear ever fails to actuate, you'll just have the visual on the screen, not a callout as you slow down or speed up.

 

[kurtfly]

Homebuilt101,

Dynon can confirm this, but I believe if you are tapping off of LED's the "open or off" state may be too high impedance and not "pull down" the contact input enough to get a low "Gear Up" indication.  If this is the case you will need to add a pull down resistor ~5K Ohm should work.  An incandescent lamp will not require a "Pull Down".  Also, I recommend you put a diode in series with the contact inputs to provide isolation.