FlarmACL stopped working after Flarm update

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Jim Staniforth

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Feb 24, 2026, 10:06:10 AMFeb 24
to LXNav Soaring Glider Equipment User Discussion Group
The strobe in the tail of my ASH31Mi used to be triggered by the FlarmACL, but since the v7.4 update has not triggered the strobe using Flarm.
I've tried a new FlarmACL, no change.
Made a few more flarmconfig files, but haven't hit the right combination.
Must have set something wrong. Any suggestions?
Could use someone else's functional config file, only changing Flarm / ICAO addresses.
Thanks,
Jim

John Ferguson

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Feb 25, 2026, 7:03:47 AMFeb 25
to LXNav Soaring Glider Equipment User Discussion Group
Ensure baud rate matches, try the protocol versions as per page 11 of this doc


Are you running anything else from your flarmacl, is that still working, maybe try plugging a flarm display into the port the tail strobe uses on the acl to see if you get any output at all.

Does the strobe work if you bypass the acl, eg, connect the flarm directly to the strobe

John

Jim Staniforth

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Feb 26, 2026, 9:21:08 AMFeb 26
to LXNav Soaring Glider Equipment User Discussion Group
The original FlarmACL was fixed at 19,200 baud. The new one adjusts, but still using 19,200.
Tried both wiring harnesses.
The 2 other devices connected through the FlarmACL hub (S10 and ClearNav) have functioned with all versions of hardware and config files.
The strobe works when switched into the manual on position.
There is a newer firmware update 7.43 which I'll install when back at home.
Running 7.40
Jim
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