That´s right (ESP 01) and after a sucessful flashing all pins got removed and the 3.3V from the boards fmu is enough to power it and also the rest of the external sensors like gps.
Only the baud rate of 921600 has to be reduced to 230400 cause the rxdma channel of this uart (4) is already in use by dshot otherwise not flyable by QGC´s virtual joysticks.
