Why Are My FPV Wing Servos Jittery?

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 power issues. First, check your power supply: ensure your servos receive a stable voltage, ideally from a dedicated BEC or a well-filtered battery output. Voltage drops or spikes can cause erratic servo movement. Next, inspect the servo signal wires and connectors for loose connections or damage. Use twisted or shielded cables to reduce electrical interference. Also, verify your receiver and flight controller are properly grounded and that the signal cable is securely connected. If you’re using a PWM signal, consider switching to a digital protocol like SBUS or CRSF for cleaner control signals. Finally, check your transmitter trim and endpoint settings to avoid overdriving the servo. If interference persists, try relocating antennas or adding ferrite beads to reduce noise. These steps usually eliminate jitter and improve servo smoothness on your FPV wing.