Onboard REALTIME Telemetry Cockpit Display | DJI FPV RC Freewing Avanti EDF JET | FIR

I saw this posted on FlyingGiants.com (one of our other sites) and had to share it here!


FPV RC Freewing Avanti EDF JET

We have been a long time fan of the Freewing 80mm EDF Avanti as an aerobatic sport jet and it was about time we converted it to head tracked DJI FPV. We have designed our own smooth moving pan/tilt mechanism with a bearing and two servos that moves as the pilot on the ground moves his head. We use the FatShark External Head Tracker module but are also close to having our own 'Essential RC' head tracker. The flight footage is from 2 flights one of which was flying with Jason 8S powered Avanti which was difficult to keep up with. In future we'll have the same setup so can fly closer !

Onboard REALTIME Telemetry Cockpit Display | DJI FPV RC Freewing Avanti EDF JET | FIRST FLIGHT ! (20 min 10 sec)

In this video we also tested out the RCGauges realtime telemetry display. It is available in either standalone or iNav versions. We purchased and tried out the standalone 2 inch version. Although functionally it works very well it is not viewable in the bright sunny conditions when we flew, much like any other LED display. We'll be using this LED display again when its not so bright on cloudy days or in the late afternoon. We will also try it in other projects especially in cockpits that can provide a lot more shade. Look on www.RCGauges.com for more information.

Note that to reduce the unfortunate flicker effect with the DJI FPV camera a Caddx 14MM ND8 filter should be used. This happens because of the mismatch in frame rate/frequency between the camera (60 fps) and the OLED (90 hertz). An ND filter on the camera forces the automatic shutter speed to be longer duration and this prevents most of the flickering. For the DJI FPV camera to have best focus the LED display needs to be 10cm to 12cm away. Ensure this can be accommodated in your cockpit layout. If not, then consider the smaller LED display sold by RCGauges.COM


Filmed by Dom and Jason for the 'Essential RC' YouTube channel using the Panasonic AG-UX180 4K camcorder.

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Jun 09, 2021, 02:39 PM
Registered User
rpstar's Avatar
Cool. Was on my way to doing the same thing but also was worried I'd have the same issue of flicker. Would be great if we could get this to work as the horizon display blown up would be quite useful I think (or at least cool) in the 3d plane I wanted to put it in.
Jun 09, 2021, 09:54 PM
Mr Birdie ~ Flight Expert
2StrokeMatty's Avatar
I have done this using an Arduino, and it flickers terribly. I cant alter the refresh rate of the screen as its I2c and does this itself. Tried it with LED number displays also.
I will try the filter see if its better.

Also if you put a card 'dash' over the screen to stop the sun getting on it - works well.
Jun 10, 2021, 01:52 AM
Registered User
Ben Nachie's Avatar
I could be wrong but in every video I've seen of those gauges I've only ever seen roll move, not pitch so I don't think it's a proper artificial horizon, just a roll gauge.
Jun 10, 2021, 11:01 AM
Essential RC YouTube channel
DominicM's Avatar
Thanks for sharing our video Jim. We flew the Avanti with the new telemetry display on a very sunny day so no great surprise it wasn't clear on DJI camera. I've found that a little less sunlight makes a huge difference. We'll show that in a new video on the 'Essential RC' YouTube channel soon. https://www.youtube.com/c/EssentialRC
Jun 11, 2021, 05:28 PM
Essential RC YouTube channel
DominicM's Avatar
Flying with less sunlight on a cloudy day made a huge difference. Perfect for us in the UK. We don't see that round bright yellow thing very often.

AWESOME FPV FLIGHT | Onboard REALTIME Telemetry Cockpit Display | DJI FPV RC Freewing Avanti EDF JET (5 min 24 sec)
Jun 14, 2021, 05:08 PM
More gadgets please.
pete914's Avatar
So Cool!!
But like most OSD's: too much info. Small too. I would never look at it flying a Jet or anything fast.
I would be awesome to have the option for one gauge that was big and centered.
I run OSD on my DJI goggles but would love a big single gauge for speed or even better: a variometer. FPV soaring is the most fun of all of them and eagle tree's analog system is still the best option for vario information: if you can stand the analog video...
Jun 15, 2021, 01:34 AM
Essential RC YouTube channel
DominicM's Avatar
I suspect the Developer will listen to feedback and easily add cycling gauges or pre-selected single gauges if that is what folks want. If anything this OLED is to make the FPV cockpit look more dynamic and entertaining. There is a bit of delay in the information being displayed so you are right, best not to depend on it for telemetry. OSD better for that. I'm a very enthusiastic film maker so I'll be incorporating it into a few scale cockpits over the coming months.

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