Why Are My FPV Wing Servos Jittery and How Can I Fix It?

Question: What causes jittery servos on an FPV wing?

Answer: Jittery servos on an FPV wing usually stem from electrical noise, poor signal quality, or power issues. First, check your servo wiring: ensure all connectors are secure and use quality servo leads. Avoid long servo cables or run them away from power wires to reduce interference. Next, verify your power supply is stable; servos often jitter if the battery voltage drops or if the BEC (battery eliminator circuit) is overloaded. Using a separate regulated power source for servos can help. Also, inspect your flight controller or receiver connections – a loose or damaged signal wire can cause erratic servo movement. If your receiver uses PWM signals, consider switching to a digital protocol like SBUS or DSMX for cleaner signals. Finally, check for mechanical issues such as binding linkages or servo gears under strain, which can mimic jitter. By systematically checking wiring, power, signals, and mechanics, you can usually eliminate servo jitter and enjoy smooth control responses.