Pixhawk Anti-Vibration Shock Absorber Vibration Damper

The Pixhawk Anti-Vibration Shock Absorber (Vibration Damper) is a specialized mounting accessory designed to isolate the flight controller (Pixhawk/APM) from vibrations generated by motors, propellers, and frame resonance in drones. It plays a critical role in improving flight stability, sensor accuracy, and overall UAV performance.

Key Features

• Effective Vibration Isolation: Reduces high-frequency vibrations from motors and propellers
• Improves Flight Stability: Ensures accurate IMU readings for better control
• Universal Compatibility: Works with Pixhawk, APM, KK, MWC flight controllers
• Dual Plate Design: Top and bottom plates connected via damping elements
• Lightweight Construction: Minimal impact on drone weight
• Easy Installation: Mount using screws, standoffs, or adhesive pads
• Multi-Purpose Use: Can also isolate cameras (GoPro, FPV cams)

Technical Specifications

• Type: Anti-Vibration Mount / Shock Absorber
• Material: Glass fiber plates + rubber/silicone dampers
• Mounting Style: Plate with rubber dampers (grommets or balls)
• Compatibility: Pixhawk 2.4.8, APM 2.5/2.6/2.8, and similar controllers
• Weight: ~20–30g (typical)
• Dimensions: Varies (~90×60mm typical plate size)

Working Principle

• Drone motors and propellers generate vibrations and oscillations
• These vibrations affect IMU sensors (accelerometer & gyroscope)
• The damper uses rubber/silicone isolators between two plates
• This creates a mechanical filter, reducing vibration transmission
• Result: clean sensor data → stable flight performance

Applications

• Quadcopter and multirotor drones
• Pixhawk/APM flight controller mounting
• FPV drones and aerial photography rigs
• Camera stabilization systems
• UAV research and development

Advantages

• Reduces “jello effect” in video
• Improves PID tuning and flight accuracy
• Protects sensitive electronics from mechanical stress
• Easy and low-cost upgrade for drones

Usage Tips (Very Important)

• Mount near center of gravity for best results
• Do not use overly soft dampers (can cause oscillations)
• Keep wiring loose (tight wires transmit vibration)
• Balance propellers properly (first priority before damping)
• Avoid over-damping → can reduce control responsiveness

Design Insight (Important for Drones)

• Pixhawk already has internal IMU isolation in some versions
• External dampers are useful only if vibration levels are high
• Poor damping setup can sometimes worsen performance instead of improving

Note: Images are for Illustration Purposes Only.