We've stocked this board for very specific reasons. If you take a close look at the pictures, you'll notice that the board has connectors for everything AND solder pads. Furthermore, it has a full micro SD slot for BB, takes 6S direct and even claims to have a Baro (we haven't tested that). All for a super great price.
The downsides are that it's got 3mm diameter mounting holes however we've confirmed with the manufacturer that you can drill these holes out to 4mm diameter to use rubber grommets. The F4 PSU on it is becoming a little outdated by now but it's also not going to hinder any performance on any craft and keeps the costs down on the board. Also, this is a 30.5x30.5 mount board so assure your frame supports that. Lastly, not the super low price which is nice but also usually means low quality however flight controllers tend to have fewer issues than ESC's and even the cheap ones are very reliable. You should definitely understand what you're getting with this board. It's not intended to be a super premium product but it does have extreme value for what it is.
We're always testing everything on the market looking for value. This board is absolutely one of those value items that deserves attention.
Specifications:F4 Flight control
Input Voltage: 2S-6S
BEC: 10V 1A, 4.5V, 3.3V
Mounting hole: M3 30.5 * 30.5mm
Support barometer, black box
Model: DarwinFPV Stack 005
I have had this and the esc in a 5inch Freestyle for a couple months now, it's held up well so far. I made the grommets fit without drilling the holes out.