Pulse Position Modulation-

This is a radio communication protocol that allows us to transmit up to 8 channels at a time to the flight controller over 1 wire.

The PPM signal is essentially multiple PWM signals sent back to back.

PPM SIGNAL Pulse Position Modulation

PPM SIGNAL Pulse Position Modulation

PPM Technology is used in these various pieces of hardware:

  • R/C transmitters
  • R/C receivers
  • Autopilot/Stabilization systems
  • PCTx

The FRsky D4R-II is a popular radio receiver that uses this technology.  The D4r-II is a 4 channel rx that when PPM is enabled it allows the Rx to transmit 8 channels.

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