The Rollarm Kit for Arduino is designed for mass hobbyists to learn robot arm control. With the open source MCU Arduino UNO and a servo expansion board, the robot arm is easy to use and full of fun. You can control its four axes by the 4 potentiometers on the handle, as well as make them move on your computer. In addition, it can memorize the movements it's made and repeat again and again, making it a great tool for repeated tasks. 
For more detailed information about assembly and application, please visit: https://www.sunfounder.com/learn/category/DIY-Control-Robot-Arm-kit-for-Arduino-Rollarm.html

Features:

• The Rollarm is a 4-axis movement kit customized for robot hobbyists to learn to control the mechanical arm, with detailed user manual, code and introduction videos.
  
• 2 controlling manners: manually (by handle) or by computer (Labview). 
  
• Able to memorize about 100 movements made.
  
• Four servos compose and control the four joints, and grippers have double layers with pointed end and jagged edges – to grab objects firmly.
  
• Made of wooden materials with light weight and fine texture, it brings you closer to nature.

Kit include:

• 1 Set x Wooden Plates
  
• 14 x M1.2*4 Self-tapping Screw
  
• 8 x M2*8 Screw
  
• 8 x M2 Nut
  
• 2 x M3*8 Flat-head Screw
  
• 10 x M3*8 Screw
  
• 18 x M3*10 Screw
  
• 20 x M3 Nut
  
• 4 x M7 Thin Nut
  
• 1 x 3*10*1 Washer
  
• 5 x M3*10 Aluminum Tube
  
• 2 x M3*6 Corn Rivet
  
• 3 x φ3*φ8*4 Band Edge Bearing
  
• 4 x SunFounder Servo (9g)
  
• 4 x Potentiometer Button
  
• 1 x 18650 2-Battery Holder 
  
• 1 x SunFounder Mars Board
  
• 1 x Expansion Board
  
• 1 x Potentiometer Module
  
• 1 x USB Type-C Cable 
  
• 2 x RJ11 Cable 
  
• 1 x Riband
  
• 4 x 3M Non-skid Pad
  
• 2 x Heat Shrink Tubing
• 2 x Cable Clip
  
• 1 x 3M Tape
  
• 1 x Screw Driver
• Self-provided Parts
  2 x 18650 Rechargeable Li-ion Battery (3.7V) without protection circuit board