GPS Rescue Mode Setup Checklist

1. Hardware Connections

• GPS RX → FC TX
• GPS TX → FC RX
• GPS 5V → FC 5V (or 4V5 pad for USB power during satellite search)
• GPS GND → FC GND
• (Optional) GPS SDA → FC SDA & GPS SCL → FC SCL if using compass.

2. Enable GPS in Betaflight

• Open Betaflight Configurator.
• Go to Configuration Tab → Enable GPS under “Other Features.”
• Select UBLOX as provider (recommended).
• Set Baud Rate to 57600 (stable) or 38400 if needed.
• Enable Auto Config for GPS.

3. Assign GPS to a UART

• Go to Ports Tab.
• Locate the UART you connected the GPS to.
• Under “Sensor Input,” enable GPS.

4. Home Point & Satellite Lock

• Enable Set Home Point Once in GPS tab.
• Wait for 8+ satellites before arming (minimum for reliable rescue).

5. Failsafe Setup

• Go to Failsafe Tab (Expert Mode ON).
• Stage 2 Failsafe → Select GPS Rescue.
• Configure Return Altitude: Set higher than local obstacles (e.g., 60–80m).
• Set Return Speed: 12m/s for micros, 17m/s for 5″ and 7″ builds.
• Set Throttle Hover accurately (test hover at ~3.8V/cell).

6. Mode Switch (Optional)

• Go to Modes Tab.
• Assign a switch to GPS Rescue for manual activation.

7. Test Flight

1. In a large open field, fly ~50m away.
2. Activate GPS Rescue manually via switch.
3. Observe:
   • Drone climbs to set altitude.
   • Turns toward home.
   • Returns and descends.
4. Disengage switch to regain control.

8. Safety Extras

• Enable GPS coordinates on OSD for crash recovery.
• Use a self-powered buzzer for lost model locating.
• Record DVR footage to help find crash sites.

✅ Pro Tip: Always re-test GPS Rescue after firmware updates, major config changes, or replacing components.