What causes jittery servos on an FPV wing and how to fix it?

Question: What causes jittery servos on an FPV wing?

Answer: Jittery servos on an FPV wing are usually caused by electrical noise, poor power supply, or signal interference. To fix this, first check your power source: ensure your servos are powered by a clean, stable 5–6V supply, ideally from a BEC or separate battery. Avoid powering servos directly from the flight battery without regulation. Next, inspect your wiring; use twisted or shielded servo leads and keep servo cables away from motor wires and ESCs to reduce interference. Add ferrite beads or small capacitors (0.1µF) across servo power and ground to help filter noise. Also, confirm your receiver and transmitter are properly bound and that antenna placement minimises signal loss. Finally, test the servo with a different receiver or flight controller to rule out hardware faults. If jitter persists, try swapping the servo itself, as worn or damaged servos can also cause erratic movement. Following these steps should reduce or eliminate servo jitter on your FPV wing.