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 connections, or unsuitable power supply. First, check your servo wiring for loose or corroded connectors and ensure all plugs are firmly seated. Next, verify your battery and ESC are supplying clean, stable voltage—using a BEC or separate 5V regulator often helps. Electrical noise from motors or ESCs can interfere; try adding ferrite beads on servo wires or twisting signal and ground wires together to reduce interference. Also, inspect your receiver antenna placement and ensure it is well separated from power wires to avoid signal issues. If your transmitter trims are set incorrectly or your servo endpoints are over-driven, this can cause jitter—calibrate trims and endpoints in your transmitter settings. Finally, test with a different servo to rule out a faulty unit. Following these steps will usually eliminate jitter and improve your FPV wing’s flight control smoothness.