Hello guys,
About digital fpv, some effort tried to use wifi to approach fpv. But as you know, the performance will degrade when the UAVs fly out of range. COFDM technology can solve such kind of problem perfectly. It can help to build a stable digital fpv, not graceful degradation, not stalling like wifi-based fpv.
Traditional digital FPV using COFDM technology is very expensive athough its performance is much better.So, most of time, only military agencies or professional UAV companies can afford such kind of technology.So........
I have released an affordable digital FPV with COFDM modulaiton.
This unit is very small(dimension:60*36*19mm ), and it is light.(Weigh:58g, circuit board only 20g).
You can refer to the photo below.
We have tested our unit, and the range can reach upto 2km. And the performance is much better than DJI phantom 3.
It support upto 720p. And the latency is 300ms in 720p and 100ms in 576p.(I am still working on control the latency)
I will released a text video on youtube soon.
I want to cooperate with some UAV companies, if you have any interest, contact me for more details.
My email address is : chenzhenguang@hn-rf.com
Also, if you want to know more about my digital FPV, you can leave some message below and I will answer you. Thank you.
Benny
Replies
i have been emailing you for quite a while now. and i have got 0 answer.
im interrested in the pricing of these modules.
Best Regards
Kevin
Looks really interesting. Does it take hdmi in? Will it take gopro etc in? Why does the latency jump so much for 720p? There are other digital fpv projects on here that are achieving much better latency than that @720p.
HDMI input. We tested our unit using Gopro 4. Our unit is digital fpv, so the latency is hard to control. Digital fpv have better performance. In order to control the size and cost, we have to make a balance. I have another product, its latency is less than 50ms, but it is more expensive.
HDMI in is awesome. What frequencies does it support, and what kind of antennas are you using for 2km? Please do note that there are various raspberry pi based homegrown digital fpv projects on here that achieve <200ms for 720p.
I have released a demo version.It support 460-860 MHZ, adjustable,stepping 1MHZ. Normal antena when tesing. I see that some guys using raspberry pi to build digital transmitter. It seems like wi-max project. DJI phantom 3 is using wi-max. Actually, according to my test, COFDM performance is much better than wi-max.So I guess that when the signals quality degrade, the video performance of Pi's project will degrade,too.
I'd definitely like to know more! What sort of price are you expecting?
About 2XX USD for batch order. Price include a transmitter and a receiver.
You can email me for price.
Hello
how i can buy sample for test?
how is price?
thank you