APM2.9 is used in the same way as APM2.6, 2.8. The benefit is that APM 2.9 supports PPM and SBUS receiver protocols.
Why use the SBUS/PPM protocol? The communication speed is fast, the wiring is simple, only one line is needed, unlike each channel of the PWM, the PWM communication speed is slower than PPM/SBUS.
The product supports the PPM receiver protocol and supports the PWM protocol. Before using this product, make sure your receiver is PPM-enabled. If your receiver does not support PPM, use the PWM protocol.
Also, you can upload firmware from Mission Planner.Uploading firmware does not affect support for PPM.
When connect INPUT 2 and 3(Insert Jumper),use PPM.
when Disconnect INPUT 2 and 3(Remove Jumper) ,use PWM
package included:
1x APM2.9 flight controller board with shell
1x RC Receiver Connection Line


