Add Sync Backpack Time button to set the backpack RTC from the handset#18
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bob9 wants to merge 1 commit into
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Add Sync Backpack Time button to set the backpack RTC from the handset#18bob9 wants to merge 1 commit into
bob9 wants to merge 1 commit into
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This was referenced Jul 14, 2026
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We will NOT be adding this much code to the existing Lua script. It already has problems running on low memory radios. |
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Adds a Sync Backpack Time entry to the device menu (shown only for ELRS TX modules). Selecting it sends the handset's current date/time to the TX module using the special field id
0x3C, which the module firmware forwards to the backpack to set its RTC.The TX backpack then distributes the time to the VRX backpack over ESP-NOW — see the companion firmware PR: ExpressLRS/Backpack#231.
Related: ExpressLRS/Backpack#232 (DVR recording name forwarding, which uses the synced RTC for timestamped filenames).
Also related: hd-zero/hdzero-goggle#613 (names DVR recordings after the race; the time synced by this button gives those recordings correct timestamps).
Companion TX-module firmware PR: ExpressLRS/ExpressLRS#3701 (handles field
0x3Cand forwards the time to the backpack asMSP_ELRS_BACKPACK_SET_RTC).