Metal 4Servo Motor Robotic Arm Kit (KIT Version) is a programmable DIY claw robot designed for handson STEM learning and hobby robotics. The arm is driven by servos and responds to commands from a dedicated mobile app over Bluetooth, making it suitable for experiments, demonstrations, and practical projects. Key benefits Easy app control: Bluetooth connectivity and included mobile app software let you control the arm from a smartphone or tablet with minimal setup. Quality components: NANO motherboard and expansion board, aluminum alloy frame, and a thickened bottom plate provide stable, reliable construction for repeated use. Programmable and versatile: Four servos with adjustable speed let you tune movement and create a wide range of motions for picking, placing, and manipulating small objects. Educational focus: Designed for learning electronics, mechanics, and basic programming through assembly and handson operation. Compact and portable: The assembled system is lightweight and the kit packs into a small box for transport and storage. Function and performance The drawing board manipulator executes actions according to instructions sent from the mobile app via Bluetooth, enabling direct control or preprogrammed sequences. Servo speed adjustment increases the range of possible behaviors, from smooth placements to faster repetitive motions. Solid metal and electronic components give consistent motion and a durable build for repeated classroom or workshop use. Specifications Material: Electronic components and metal Product weight: 550 g Package dimensions: 25 x 20 x 20 cm Package weight: 600 g Recommended age: 16 and up Function: Mobile app controlled drawing board manipulator Package contents NANO motherboard x1 NANO expansion board x1 Bluetooth module x1 All metal toothed servos x4 1.5V voltage reduction module x1 Aluminum alloy frame x1 Thickened bottom plate x1 Wire x1 Mobile app software x1 Screw fasteners set x1 Use scenarios Classroom STEM lesson: Students assemble the kit to learn mechanical linkages, basic electronics, and simple programming through guided exercises. Home project or maker session: Hobbyists build and program the arm to perform pick and place tasks, small demonstrations, or to test custom control sequences. Demonstration or club activity: Use the arm for tabletop robotics demos, group challenges, or to prototype automation ideas in maker spaces. What you need to know before buying This is a kit version that requires assembly and basic familiarity with mechanical assembly and wiring. Control is via Bluetooth using the included mobile app software; confirm device compatibility with the app before use. Intended for users aged 16 and older. This kit provides a practical, durable platform for learning robotics, experimenting with servo control, and demonstrating programmable motion using Bluetooth and a mobile app.