Spirit Pro + Radiomaster EP3-H Receiver + Interface

[Holger Port]

Hi everyone,

I'm currently upgrading a scale heli with a Spirit Pro unit to ELRS using a Radiomaster RP3-H receiver.

Everything is working correctly so far, but since I have to plug two of the receiver cables into the SYS port, I can't connect the Spirit interface there at the same time. I've already tried using a Y-cable, but that doesn't work. How can I solve this?

Currently, I can only use either the receiver or the interface/software. But I need both connected simultaneously for configuration.

I've already tried the wiring as described in the software, but the servos still don't move. The servos move when wired via SYS. For your information: I'm using ELRS 4.0.0.

Cheers, Holger

[Holger Port]

I managed to get it working, but it's crucial which port the green and white cables from the RP3-H are connected to. The Spirit software only lists Ch. Out 1 and Ch. Out 2, and the pictures in the wiki show the green cable plugged into RUD. However, this doesn't work with the Spirit Pro. The white cable must be plugged into RUD and the green cable into AIL for it to work. Once I've finished the configuration, I'll move the green and white cables back to SYS, because I read somewhere that this avoids telemetry issues.