This page shows several implementations of the Open source RC transmitter software
A 9 channels transmitter on a protoboard (Arduino Nano) with PCB diagrams for 6 and 9 channels
A transmitter with a 7 inch FPV monitor, made with a Deek Robot Nano expansion board like the one below.
Notice the CNC-engraved front panel, cut from DIBOND, a 3mm thick composite of polyethylene faced with aluminium sheet.
A modified vintage Reftec transmitter (Arduino Nano)
A FlySky FS-CT6B implementation with a rotating switch (Arduino Nano)
Read this user's build log.
A very neat breadboard implementation with an oscilloscope showing the PPM signal (Arduino Nano)
This user added a bluetooth module to program the transmitter with an Android device (Arduino Pro Mini)
An Arduino shield implementation (Arduino Uno)
