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 power issues. First, check your servo wiring and connections to ensure they are secure and free from corrosion. Use quality servo leads and avoid long, thin wires that can pick up interference. Next, verify your receiver and flight controller grounding are solid and shared to reduce noise. Power supply is critical: servos demand stable voltage, so use a separate BEC or a well-filtered power source rated for your servo's current. If you’re using a 5V BEC, ensure it can handle the load without voltage drops below 4.8V. Also, inspect your receiver antenna placement to minimise interference. Firmware settings might help; try adjusting servo refresh rates or filtering options in your flight controller configuration software. Finally, test servos individually on a servo tester to rule out faulty units. By systematically checking wiring, power, signal, and hardware, you can eliminate jitter and enjoy smooth control on your FPV wing.