Channel PPM Encoder Board For PX4 & Paparazzi Flight Controller Item Name: PPM Encoder Board Input: 8CH Preset Firmware: V2.3.16 for quducopter Compatible Flight Controller: PX4 & Paparazzi Flight Controller Usage: Encoding the receiver multi channel PWM signal output to PPM composite signal output, connects to the supported flight controller via single line mode. Package Included: 1x PPM Encoder Board