The Walkera Magic Cube is used to control Walkera models with either a Walkera remote control or using an Android app. We wanted to control the Walkera Ladybird with a computer so we started to investigate how to interface the Magic Cube work with a computer. After some tinkering and dome dead ends we ended up generating a PPM signal using an Arduino. The proof-of-concept setup for this is depicted above. This allows us to send commands via serial to the Arduino which in turn controls the Ladybird using the Magic Cube. The code used to generate a PPM signal which is accepted by the Magic Cube can be found on a GitHub project page. The wiki for this project also contains some further explanations on how to recreate the setup. Some experiments and data regarding the reverse engineering of the Android app and its protocol can also be found there (see the early_attempts branch).