Review on TCMMRC FC F4 Flight Controller OSD 2-5S DSHOT600 for RC Drone FPV Racing - Upgrade your Drone's Performance! by Tony Baker

4 stars because this thing doesn't have detailed documentation. Would I recommend this product? May be. Mainly because there is very little support for this brand and even if you find out that it is actually an Omnibus F4 V4 flight controller, it is still a bit difficult to connect. Does it do the job? Aha! Was the connection easy? Once I found the documentation yes. One important thing is there is solder jumper for RX to choose PPM or S.Bus. This is a very important solder jumper that you need to connect to the protocol you need. The other issue is that this is a bit old flight controller from 2021. I'm not upset that I bought it, it did what I needed. But buying a more modern and well-documented FC is desirable if you have the money.