A Metal Detector Mobil Robot as a New Application of Microcontroller OPTIMAL KINEMATIC SYNTHESIS OF 4-BAR PLANAR CRANK-ROCKER MECHANISMS FOR A SPECIFIC STROKE AND TIME RATIO New Approach for the Synthesis of Planar 4-Bar Mechanisms for 2 Coupler-Positions Generation Optimal Synthesis of a 4-Bar Simple Toggle Computer-Aided Data for Machinery Foundation Analysis and Design Pressure Control of Steel-Ball Boring Bar Using Optimized PID Controller through Genetic Algorithm Free Vibration Analysis of Sandwich Beam Structure Using Finite Element Approach Tuning of a Lag-Lead Compensator used with a First Order Plus an Integrator Process.