The project also makes use of Arduino Nano as microcontroller (MCU) and 433MHz ASK RF transmitter module. There can be many such sensor nodes but only two such nodes are used here. The receiver ...

It is a 2 layers PCB board, last revision. The Arduino-Nano board is mounted on the bottom side and LCD on the top side of the board, preferably on female pin headers. This is more clear in 3D views ...

After assembling the circuit on the PCB and uploading the source code xyz.tx.ino into Arduino Nano, connect 9V DC at CON1. Your transmitter is now ready to use. Fig. 3: PCB layout for transmitter ...

In that case, [Electronoobs] has an Arduino powered RC transmitter with your name on it. But this is no scrap of protoboard with a couple of cheap joysticks on it, though he has made one of those too.