Tutorials
Smart Dustbin Arduino Build with an Ultrasonic Sensor
Mount an HC-SR04 at 60–70 cm, add hysteresis between open and close distances, and drive a lid servo without jitter.
Archive
Author: Jignesh Panchal
Jignesh Panchal is the founder of Jaadu Digital and author of Robotics Engineering, an India-focused robotics publication. The site uses AI-assisted research and drafting; educational guides and illustrative calculations are not claims of hands-on testing or machinery-safety certification.
Tutorials
Bluetooth controlled robot car with Arduino and HC-05
Wire an HC-05 to D2 and D3, drive an L298N, pair at 9600 baud and add the failsafe that stops the car…
Tutorials
Servo vs DC motor vs stepper: choosing a robot actuator
Position, speed or torque, control complexity, driver needs and cost per axis, plus a worked torque calculation for a small three-joint arm.
Tutorials
L298N vs TB6612FNG: which motor driver for your robot?
Voltage drop, honest current ratings, PWM behaviour and pin count compared, with a decision table for choosing between the two cheap motor…
Tutorials
How to power a robot: 5 V rail, grounds and brownouts
Buck or linear regulator, one ground point, decoupling capacitors and wire gauge: why a robot resets when the motors start, and how…
Tutorials
Wall following robot with Arduino: sensor placement and steering code
How to mount a side HC-SR04, steer proportionally instead of bang-bang, and stop a wall follower drifting down a long corridor.
Tutorials
Robot battery guide: voltage, capacity and safety
How to choose between NiMH, Li-ion and LiPo packs, size the voltage, and avoid the mistakes that damage cells.
Tutorials
Final-year robotics project ideas with real budgets
Ten projects that can be built, tested and defended in one semester, with honest part costs and scope notes.
Tutorials
Robotics project report format: what examiners expect
A chapter-by-chapter format, the figures that carry marks, and the viva questions that follow a weak test section.
Buying guides
Where to buy robotics parts in India: what to check
Online stores, local markets and the clone checklist that saves a project from a dead-on-arrival board.