Betaflight Failsafe and arming: CLI settings
What the quad does when the RC link drops (stage 1 delay, stage 2 procedure, throttle), arming angle limits, auto-disarm and runaway-takeoff protection.
14 settings in Betaflight 2026.6, plus 1 that earlier releases had.
Each range and value list is read from the firmware's settings.c, each default from the
CLI get of the release built for the simulator (no board config applied), so a board's own
config can still change it. Set one with set name = value, then save.
Paste a diff all into the CLI checker to test it against any release.
| Setting | Type | Range or values | Default | 4.4 | 4.5 | 2025.12 | 2026.6 | Notes |
|---|---|---|---|---|---|---|---|---|
auto_disarm_delay # |
uint8 global |
0 to 60 | 5 |
✓ | ✓ | ✓ | ✓ | |
failsafe_delay # |
uint8 global |
1 to 200 | 15 |
✓ | Δ | ✓ | ✓ | 4.5: min 2 → 1 |
failsafe_landing_time # |
uint8 global |
0 to 250 | 60 |
— | — | ✓ | ✓ | |
failsafe_off_delay # |
uint8 global |
0 to 200 | 10 |
✓ | ✓ | — | — | Removed in 2025.12. |
failsafe_procedure # |
uint8 global |
AUTO-LAND, DROP, GPS-RESCUE | DROP |
✓ | ✓ | ✓ | ✓ | |
failsafe_recovery_delay # |
uint16 global |
1 to 200 | set by the target |
✓ | Δ | ✓ | ✓ | 4.5: min 0 → 1 |
failsafe_stick_threshold # |
uint8 global |
0 to 50 | 30 |
✓ | ✓ | ✓ | ✓ | |
failsafe_switch_mode # |
uint8 global |
STAGE1, KILL, STAGE2 | STAGE1 |
✓ | ✓ | ✓ | ✓ | |
failsafe_throttle # |
uint16 global |
750 to 2250 | 1000 |
✓ | ✓ | ✓ | ✓ | |
failsafe_throttle_low_delay # |
uint16 global |
0 to 300 | 100 |
✓ | ✓ | ✓ | ✓ | |
gyro_cal_on_first_arm # |
uint8 global |
OFF, ON | OFF |
✓ | ✓ | ✓ | ✓ | |
prearm_allow_rearm # |
uint8 global |
OFF, ON | OFF |
— | — | ✓ | ✓ | |
runaway_takeoff_deactivate_delay # |
uint16 global |
100 to 1000 | 500needs USE_RUNAWAY_TAKEOFF |
✓ | ✓ | ✓ | ✓ | |
runaway_takeoff_deactivate_throttle_percent # |
uint8 global |
0 to 100 | 20needs USE_RUNAWAY_TAKEOFF |
✓ | ✓ | ✓ | ✓ | |
runaway_takeoff_prevention # |
uint8 global |
OFF, ON | ONneeds USE_RUNAWAY_TAKEOFF |
✓ | ✓ | ✓ | ✓ |
✓ present, Δ changed in that release (hover for what changed), — not in that release. “needs USE_…” is the build option the setting is compiled with: a cloud build without it has no such setting.
Other sections
- Gyro and D-term filters (27)
- PID tuning (73)
- Angle, horizon and launch modes (20)
- Rates and throttle curve (25)
- Motors and ESC (23)
- Receiver and RC link (32)
- GPS (14)
- GPS rescue (12)
- Autopilot, position and altitude hold (66)
- Battery and current sensor (28)
- OSD (49)
- OSD element positions (90)
- VTX and camera control (12)
- Blackbox and debug (20)
- Telemetry and serial (44)
- LED strip and beeper (12)
- Sensors and board alignment (35)
- System and hardware (25)
What changed between releases: 4.4 → 4.5 · 4.5 → 2025.12 · 2025.12 → 2026.6. Machine-readable: params.json (2026.6.2), GPL-3.0 like the firmware it comes from.