After a long hiatus of Robotics activities I am starting a new project: A Chess Playing Robot. As a logical step up of the Tic Tac Toe Playing Robotic Arm I built some years ago I have started building a Chess Playing Robot. The idea is to build not only a Robot Arm that play… Read More 3D Printed Chess Robot Gripper
The following describes a simple method (inverse kinematics) of calculating the angles for all joints of a robotic arm to obtain a desired position of the end actuator (gripper). The video bellow shows the algorithm at work. The picture bellows shows the robot arm used for this example. It has 5 degrees of freedom: 1.… Read More Simplified inverse kinematics model for a 5 degree of freedom + gripper robotic arm (2011)
TicTacToe Robot Arm (2010) TicTacToe game Robot Arm application. Robot Arm with 5 degrees of freedom plus gripper, made with Lego Technic, LynxMotion and custom made parts controlled with a Parallax Propeller Microprocessor. Game board made with an array of 9 CNY70 infrared light emitters and detectors. User interface with 2 line LCD display and… Read More TicTacToe Robot Arm (2010)
Experimental robot arm with 5 DOF (Degrees of Freedom) plus actuator (gripper). The Lego version was to shaky and weak so replaced from the elbow down with Aluminum Servo Erector brackets from Lynxmotion. Gripper, wrist and wrist rotate made with Lego Technic and aluminum parts, elbow, shoulder and base made with Lynxmotion parts. Parallax Propeller Proto… Read More Robotic Arm, Lego gripper + Lynxmotion Servo Erector elbow, shoulder and base version (2010)
Method and material I used to easily connect servos to Lego Technic projects. Used for my 2010 Robotic Arm. This tip was based on this source: Tutorial: Connect LEGO wheels an gears to a RoboBuilder servo.
Experimental robot arm with 4 DOF (Degrees of Freedom) plus actuator (gripper). Frame made of Lego Technic parts and aluminum sheet. Robot Gripper made of cheap Turnigy TG9e (3) servos ($1.99 each at hobbyking.com), elbow and shoulder use HiTec Servos. Parallax Propeller Proto Board used to generate the PWM signals for the Servos. A custom spin… Read More Robotic Arm, Lego Technic version (2010)