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 signal quality, or mechanical issues. First, check your power supply: ensure the servos have a stable, sufficient voltage (typically 4.8–6V) and use a separate BEC or battery pack if necessary to avoid voltage drops. Next, look at your wiring—use good-quality servo cables, keep signal wires away from high-current wires or motors, and add ferrite beads or capacitors to reduce electrical noise. Also, verify your receiver and transmitter settings; poor signal or interference can cause servo jitter. Mechanically, ensure the servo horn and linkages move freely without binding or excessive friction. Finally, test with a different servo or receiver to isolate the problem. By systematically checking power, wiring, signal quality, and mechanics, you can usually eliminate servo jitter and achieve smooth control on your FPV wing.