A Yaesu G-5500 (etc)  rotator controller project based on Anthony Good’s popular K3NG rotator controller.

This project features a Teensy 3.2 microcontroller and Nextion Enhanced HMI user interface.

• Az analogue potentiometer input
• El analogue potentiometer input
• Four NO push-button switch inputs with pull-ups available
• Teensy I/O pins available via pads
• 100 x 50 mm
• Powered from Yaesu G-5500 controller


G-5500 K3NG Controller Board

• GPS serial data pass-through (genuine FTDI chip) to USB allows for simultaneous Teensy  &  PC time-syncing


• High efficiency DC-DC buck 7805 replacement regulator (or use traditional linear 7805 with heat sink)

• Audible Alert (peizo) connector

• Teensy 3.2 Real Time Clock (RTC) battery connector

• Nextion connector


• MT-8870 DTMF module pads available for DTMF experimentation


Rear Connectors





G-5500 K3NG Controller Schematics and PCB Overlays (pdfs)

Main Board




G-5500 K3NG Controller Board Bill of Materials





Project PCBs

Will be available to purchase from the vk4ghz.com store.

More to follow, so keep checking back here.


You can find me on the Radio Artisan Groups IO:  https://groups.io/g/radioartisan/


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