RC Receivers Hacked

This article show you how to hack different RC receiver models to get the PPM signal...

CIMG7029_1

Before starting hacking job, read RC Receiver Hacking Tutorial

 


Table of contents

 


Multiplex RX-5 / Hitec HFS-05MS

These two receivers are in the same section because packages are different (plastic for Multiplex and cardboard for Hitec) but electronics inside is strictly identical, so buy the cheapest.

Stripping down

Hitec HFS-05MS stockCIMG6999

CIMG7006

CIMG7012

CIMG7019

Hacking for PPM

  • The PPM signal is aivailable on pin #11 PIC16F676 circuit (bottom left)
    To improve strength, you can short pin#11 and #12 (solder bridge) so you can use pin#12 pad for PPM wire soldering.
    (Don't worry, pin#12 is clock programming for the PIC16F676 MCU so it's only used during factory firmware programming)
  • Use PCB servo header pads to connect power supply wires.

CIMG7029_2

CIMG7037

CIMG7043