Mechanical Project List — WEBUILDPRO, Bangalore

Automated Pick-and-Place SCARA Arm

A 4-DOF SCARA robotic arm designed for PCB component placement, actuated by NEMA 17 stepper motors and controlled via an Arduino-based G-code interpreter. Achieves ±0.5mm repeatability at 30 placements per minute.

Automated Seed Sowing Machine

A tractor-mounted seed drill mechanism with a metering wheel that dispenses seeds at a controlled rate into furrows. The metering rate is adjustable for different seed sizes with a row counter on an LCD panel.

Waste Plastic to Fuel Converter

A lab-scale pyrolysis reactor that thermally decomposes mixed plastic waste (HDPE, PP, PS) into hydrocarbon fuel fractions through controlled heating in an oxygen-limited chamber, measuring yield and calorific value.

Compressed Air Energy Storage Model

A bench-scale system demonstrating the charge-store-discharge cycle of compressed air energy storage. Measures round-trip efficiency at three pressure levels using a compressor, pressure vessel and pneumatic motor.

CNC Pen Plotter (A4 Format)

A two-axis CNC plotter that converts SVG vector files into G-code and draws them on A4 paper using a servo-lifted pen. Built on aluminium extrusion with GT2 belts and NEMA 17 steppers, achieving 0.1mm resolution.

Hydraulic Scissor Lift (1/5 Scale)

A scale model hydraulic scissor lift fabricated from mild steel flat bar, actuated by a single-acting hydraulic cylinder and hand-operated pump. Demonstrates force multiplication and stability analysis with load testing up to 20kg.

Solar-Powered Agricultural Sprayer

A battery-powered, GPS-guided field sprayer for small-scale farms, driven by a 150W solar panel array and 48V Li-ion battery bank. Carries a 20-litre tank with centrifugal pump and mobile app interface for spray-zone programming.

Regenerative Braking Test Rig

A bench-scale dynamometer that simulates vehicle deceleration and quantifies energy recovered by a BLDC motor in generator mode. Measures input kinetic energy, recovered electrical energy and braking torque simultaneously.

3D-Printed Myoelectric Prosthetic Hand

A five-fingered prosthetic hand printed in PLA with tendon-driven actuation controlled by surface EMG signals from forearm muscles. Two MyoWare sensors enable grip, pinch and individual finger extension gestures.

Automatic Tyre Inflation System

A rotary union-based system that monitors tyre pressure via wireless TPMS sensors and automatically inflates or deflates tyres to a target pressure while the vehicle is moving, with a real-time dashboard display.

Vibration-Based Condition Monitoring Rig

A rotating machinery test rig with a deliberately unbalanced rotor, misaligned coupling and seeded bearing defect, instrumented with MEMS accelerometers. FFT analysis in MATLAB identifies fault frequencies for predictive maintenance.

Magnetic Levitation Demonstration System

An electromagnetic levitation platform that suspends a ferromagnetic sphere at a stable air gap using closed-loop PID control. An IR sensor measures the gap and a microcontroller adjusts electromagnet current, maintaining levitation within ±0.3mm.

Waste Plastic to Fuel Converter (Material Analysis)

Extends the pyrolysis reactor project with detailed material characterisation — comparing fuel yield, char residue and gas by-products across HDPE, PP and PS feedstocks using calorimetry and gas chromatography analysis.