Remove the Atmega328P microcontroller (the long rectangle black colored microcontroller) gently it from the PTH connector if you use PTH Arduino Uno. If you use SMD Arduino Uno, you wouldn't be able ...

You need to select Arduino Pro or Pro mini, ATmega328P (3.3V, 8MHz) in the Arduino IDE. An USB-Serial adapter that provides 3.3V is required, otherwise the radio chip can be damaged. The example ...