If you want a better radio controller using the same configuration, see this previous tutorial. That controller si compatible with this done. For the radio controller follow the same steps as for the drone PCB. See the schematic of the PCB below and use the same values. This time we supply the PCB with 9V battery so we have 2 voltage regulators, one for 5V and another for 3.3V. We will sue a power amplified antenna NRF24 module for more range.