Dear Ardu team,
here I am with another question 
I have replaced my Matek F411WSE with Racestar F405Nano. Afaik when using crossfire I should use UART1 as it is DMA. However on this board Uart1 is for BT only (no physical soldering pads). Is there any workaround about it?
I ended up desoldering the bt module pins and using them as a plug to connect the rx/tx from nanorx crossfire to Uart1. And it worked
Why not to try different uart?
Thanks.
Without a DMA port crossfire can’t run at full speed.
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Exactly, that’s why I needed uart1 