PPM Encoder

PPM Encoders are needed when there is no existing ppm encoded pulse stream available from an R/C receiver to send pilot commands to the autopilot.

See RC Receivers and Radios for more information, most R/C receiver provide a ppm sum stream output and don't need such a encoder.

ATmega PPM Encoder

ATmega (ATmega168 or 328) MCU-based board with a number of features.

MeekPE PPM Encoder

Low-cost, MCU-less board (with hex inverting Schmitt trigger).