I've bought a miniosd board from banggood, but I just can't load the minoposd to it with an ftdi converter. (I was able to burn a bootloader using an other arduino, and could flash the firmware too, but I think it's not working)
Does anyone have experience doing this? How can I make the ftdi adapter work? It always says that it failed to communicate with the bootloader. (the yellow led on the board is flashing, then lit after powering, so I think that the bootloader is there)