Well I knew I would be just a matter of time before digital fpv can go open source...
There github page .
There RC group thread .




From what I've heard the latency is around 135 ms...   
But the OSD is awesome in my opinion.

I'm curious to see how this project process.  

The OpenHD project has been around for more than an year now. Great for Planes but too large for Quads. And you will need to setup a ground station.

Not much they can do with improving latency being based on PI hardware since its the encoding/decoding and compression/de-compression is done via software rather than hardware.

Wayne did a few videos on it last year on Open.HD (links below). Unfortunately without the use of a custom hardware ASIC like DJI and Divimath use, it is never going to be suitable for flying quads with. It will still be usable for wings and ground vehicles though.

So, what goggles do you use with OpenHD     Doe the DJI ones work 

(23-May-2021, 12:19 PM)iFly4rotors Wrote: So, what goggles do you use with OpenHD     Doe the DJI ones work 

As it runs on a Raspberry Pi which can output HDMI, anything that takes an HDMI input can be used for the display (goggles or standalone screen with an HDMI input socket). So not the DJI FPV Goggles because those don't have an HDMI input.

I'm more then sceptical. DJI pulled it off, they have billions on their bank account. Divimath/FS develop this thing for like 4 years and still struggle to get over 200MW and are targeted to racers because they dont have to capable enough silicone to use higer resolutions. As much as I like open source, you need custom chips to do it, and thats f...ing expensive

It's certainly do-able by people who know what they are doing. Davide Cavion's FPV.Blue system is proof of that...

https://intofpv.com/t-interview-with-fpv...evelopment

Because DJI have now abandoned their standalone FPV System we are basically left with what they originally developed with virtually no prospect of any future hardware or firmware upgrades, so it is now just matter of how long they continue to allow Caddx to manufacture and sell the original hardware under license. It's probably a ticking time bomb so we really do need another system to come along and take over which is at least 90% as good as the DJI offering. Whatever it is though it won't be open source due to the requirement of custom ASICs to get latency anywhere near the levels we need it to be.

what are asics?
i watched the interview when you posted it, i understand(?) this is a main hardware requirement to get an accaptable latency on digital video transmission. so these are special kind of chips or did i missunderstand the whole thing?
these kind of chips are a huge investement to develop and because of that it wont be possible as opensource?

ASIC = Application Specific Integrated Circuit

https://en.wikipedia.org/wiki/Applicatio...ed_circuit

In a nutshell they are custom designed silicon chips that are specific to a particular application / purpose rather then generic off-the-shelf silicon chips that are mass produced, and as such, ASICs cost millions of dollars to design and manufacture because they are only useful for one specific bespoke purpose so they can't easily be sold to the masses.

Apart from spending millions of dollar to develop an ASIC and the specialized high performance functions you can get out of it, an ASIC is seen as a great investment for technology development companies as its almost impossible to reverse engineer if built to modern technology standards.

The only way to reverse engineer an ASIC is physically by removing each layer of the ASIC with some very specialized equipment. and using some very specialized computer program to recover the schematic.

So companies like DJI and Divimath (with deep pockets) are more than happy to invest in this front.

ASIC or general purpose programmable chips aren’t the only options. The code can be implemented in hardware using FPGAs. It has often used by companies to implement fast networking code without building ASICs. There are implementations of video codec in FPGA.

https://en.wikipedia.org/wiki/Field-prog...gate_array

The devs behind ExpressLRS are working on a digital FPV system. I think the goal right now is to have it work with standard analog VTX equipment (ie encode digital video, broadcast it over a standard analog channel using an OTS analog VTX, receive with a standard analog receiver, then decode and output via HDMI). It's still a work in progress so nothing is finalized yet. Check out their channel on Discord for more info: https://discord.com/channels/59635002219...1030180914

Also, if anyone missed it, someone managed to get a full OpenHD setup running on a 1S 18650 #nanolongrange build: https://intofpv.com/t-dave-c-s-nano-long...#pid138671

(24-May-2021, 05:19 PM)V-22 Wrote: The devs behind ExpressLRS are working on a digital FPV system. I think the goal right now is to have it work with standard analog VTX equipment (ie encode digital video, broadcast it over a standard analog channel using an OTS analog VTX, receive with a standard analog receiver, then decode and output via HDMI). It's still a work in progress so nothing is finalized yet. Check out their channel on Discord for more info: https://discord.com/channels/59635002219...1030180914

Also, if anyone missed it, someone managed to get a full OpenHD setup running on a 1S 18650 #nanolongrange build: https://intofpv.com/t-dave-c-s-nano-long...#pid138671

Hi V-22,

NOW we are talking. We just need some higher resolution for our standard analog gear. 

When you mention..."decode and output via HDMI" does that mean it will or will NOT work with the standard goggles we are now using???

The cameras are already better, it is just getting that "higher resolution" to feed through the VTX transmitters and received in the goggles. Ok, maybe a little better goggles, too; but not super high price like the DJI gear. I am Not Even Sorry, $ 500 is a little high for goggles.

Thanks

(24-May-2021, 05:19 PM)V-22 Wrote: The devs behind ExpressLRS are working on a digital FPV system. I think the goal right now is to have it work with standard analog VTX equipment (ie encode digital video, broadcast it over a standard analog channel using an OTS analog VTX, receive with a standard analog receiver, then decode and output via HDMI). It's still a work in progress so nothing is finalized yet. Check out their channel on Discord for more info: https://discord.com/channels/59635002219...1030180914

Also, if anyone missed it, someone managed to get a full OpenHD setup running on a 1S 18650 #nanolongrange build: https://intofpv.com/t-dave-c-s-nano-long...#pid138671

Super excited to read this.

OpenHD has setup a Patreon to develop a HD FPV system: https://www.patreon.com/OpenHD



Also mentioned on the OpenHD Patreon page:

"Please also note that this is NOT the official OpenHD software development funding campaign. This Patreon campaign is only intended for the prototyping and development of hardware that´s specifically designed for use with the OpenHD software ecosystem. This is happening in close cooperation with the OpenHD software developers."

So basically they are developing capable AirUnit for OpenHD that will be commercially available through various vendors but the firmware will remain OpenSource.

The board development is going to be focused around the RV1126 Rockchip : https://www.rock-chips.com/a/en/products.../1076.html