Im trying to connect uart6 to the top of the board on speedy bee f405 wing but 5V is not there and not sure if tx6 rx6 also, there is some very vague note about tx6 and rx6 but I dont understand what they mean and there is nearly no documentation.
TX6/RX6 is normally used by the wireless board. If you want to use the connections yourself via the solder pads on the top, you have to move the UART6 jumper on the back of the wireless board.