The 8CH Rotary Knob Servo Driver is an 8 channel/way controller board designed for manual servo testing, tuning, and multi servo control. It provides precise real time adjustment through a rotary knob and includes overcurrent protection to help safeguard servos and electronics. This compact servo tester and controller is suitable for hobbyists, educators, and prototype developers who need reliable multi channel servo control from a single board. Key benefits Precise manual control: rotary knob enables real time, fine adjustment of each channel for calibration and testing. Multi channel capability: drive up to eight servos simultaneously from one board. Safe operation: built in overcurrent protection reduces the risk of damage during testing and development. Flexible use as tester and controller: switch between testing individual servos and coordinated control for projects. Easy integration: straightforward wiring to standard hobby servos and power sources. Compact board design: space efficient for incorporation into small enclosures or DIY builds. Reliable performance: purpose built for hobby and prototype servo applications with consistent control output. Key attributes Functionality: 8 channel servo driver and controller with rotary knob control and overcurrent protection. Compatibility: designed for standard hobby servos and typical servo control signals used in hobby robotics and RC projects. Size: compact board suitable for inclusion in small projects and test rigs. Material: board based design (printed circuit board) for durable, repeatable operation. Performance: enables precise manual adjustments across 8 channels with protection features to support safe testing and operation. Use cases RC hobby projects: calibrate and align multiple servos for a multijoint RC model or accessory mechanism from a single control board. Robotics prototyping: drive and tune the motion of multiple servo joints in a compact robot or legged platform, using the rotary knob for fine tuning during development. Servo testing and demonstrations: quickly verify servo response, range, and behavior on several channels for classroom demonstrations or product demos. Notes The description reflects the product's core features: 8 channel/way capability, rotary knob control, servo tester and controller functionality, and overcurrent protection. Suitable for projects that require manual adjustment, testing, and safe operation of multiple servos on a single board.