My hardware setups and links

Lots of people asking for my setups. So this are:
My setting for FF split 4K

openhd-settings-1-1.zip (9.6 KB)

… and for Pi zero camera / pi zero / pi3a+

openhd-settings-1.zip (9.7 KB)

MFD Mini Crosswind:
-Naked Gitup Git2
-Hdmi to CSI converter
-Raspberry 3b+
-Asus AC56 with maple leaf antenna

Mini Talon 2:
-Firefly split 4k
-HDMI-CSI converter
-Raspberry 3a+
-Asus AC56 with maple leaf antenna

AR wing:
-Zero camera 120 degrees FOV
-Pi zero
-Asus AC56 with maple leaf antenna

Link for zero camera : RPIZ CAM 5MP 120: Raspberry Pi Zero - Camera for Raspberry Pi Zero, 5MP, 120°, OV5 at reichelt elektronik 3

Link for Firefly split 4K : Hawkeye firefly split 4k 160 degree hd recording dvr mini fpv camera wdr single board built-in mic low latency tv output for rc drone airplane Sale - Banggood.com

Maple leaf antenna:


The Gerber files (in zip format needed for ordering are here) :
http://s.go.ro/mlxc20ah 3 | parola: 224355
(parola=password)
Manufactured here:
https://jlcpcb.com/
PAY ATTENTION, when ordering, pcb thickness must be 1 mm

On ground side:
-pi 3b+
-MFD mini Crossbow tracker
-2 x Asus AC56
-2 x Maple17db patch antenna
On tripod:
-23db Interline wifi patch antenna
Link - may be obsolete -

Second receiving antenna:
antennas and accessories | for wireless networks

5 Likes

very good and well done.

Do you have good results with the 17 db patch antenna ?

Adolfo

yep, I had 30k max out.

hello
I received the FF split today
I am using your openhd_settings for air
Should I do the same for ground ?
Thanks

Yep, it’s recommended

it’s me again.
Should I use 1080/60 on the firefly set-up ?
thanks

For hdmi output use 720p /60fps.
BTW, there is no 1080p 60fps, only 1080p30 for the other option.
For sd card recording on FF split, you can choose any available option.

I had 3 flights (using foxeer legend 2 for the moment due to room constraints in the motor glider)

I completly support such configuration (hdmi-csi + hdmi cam with wdr), big step compared to picam v2 for sure

1 Like

Good news, nice!

you are welcome
I realize that you disconnected telemetry uplink. Any specific reason ?

Hi. No reason for keeping telemetry up link. I had it for a while, calibrated my analog airspeed sensor through QGroundControl after powering up the system, but no need for it anymore. Analog airspeed sensor must be powered up for a couple of minutes to let it settled. So, immediately I arrive to the field, I power my Crosswind and let it sit until I mount the wings and the tracker. My OHD system in the plane has a power switch, when I’m ready to fly, I power it up. No need for airspeed calibration though bidirectional telemetry.

Thanks for sharing the maple antenna, on my way to order the maple leaf antenna on jlc pcb. Do you know what frequency is it tunned at? Looks like 5.8 ghz but i see a lot of people use much lower spectrum on the wifi cards. Thanks

best working between 5150 and 5240mhz

1 Like

Oh, I see. The patch antenna that you shared actually tuned at 5.2 and 5.8 :wink:

Where did you got the Gerber Files?
I converted them to DXF and there is nothing symetrical, every line has another length.
The Top and bottom layers dose not match 100% (not fully overlap)

Is there a PDF file with exact measurments of the Antenna?
I like to create better Gerberfiles.

https://www.rcgroups.com/forums/showpost.php?p=42357601&postcount=29

It was shared on rcgroups as dwg file, someone from Telegram converted it to Gerber (can’t remember his name now)

What latency are you seeing with that firefly to HDMI-CSI converter to RPI 3B setup?

I was getting 300ms, but now with the Firefly cam recording mode set to 720p 60FPS, and output HDMI mode set to 720p 60FPS I’ve been able to get it down to 270ms. Seems rather high…

EDIT: lowest I’ve seen so far is 170ms. 200ms consistent is achievable.

Do you have an advise for a good lens to replace the FF split lens ?
If possible with a narrower lens

Thanks

https://m.aliexpress.com/item/4000964980666.html?spm=a2g0n.orderlist-amp.item.4000964980666&aff_trace_key=f0bb9a9e417d42d496a162816472c65d-1629887082688-03555-_d6Zz24x&aff_platform=msite&m_page_id=7901amp-CgGtQb03oy2h4aUK114CKQ1630519338654&browser_id=62cf5c0417194be28ef58aaa44737846&is_c=N

I use this one, much better than the original one