Buying guides
3D print robot parts in India: where and how to design for it
Local shops, online services and college labs compared, with material choices, hole tolerances, wall counts and cost per printed robot part.
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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.
Buying guides
Robotics starter kit India: what is worth buying
What a 37-in-1 kit really contains, the parts kits leave out, and build-your-own lists at ₹2,000, ₹4,000 and ₹6,000.
Buying guides
Servo buying guide: SG90 vs MG90S vs MG996R vs DS3218
Torque, stall current, plastic versus metal gears and fake ratings: how to pick the servo your joint needs, and what each one…
Buying guides
Best Arduino board for robotics in India: Uno, Nano, ESP32 or Pico
Uno, Nano, ESP32 or Pico: what each board can drive, what it cannot, the pin current limits and the first order that…
Tutorials
HC-SR04 readings jumping? Four fixes before you add a filter
Missing timeouts, cross-talk between sensors, a sagging supply and soft targets explain most unstable ultrasonic readings. Fix the measurement first.
Tutorials
PID Line Follower Explained, With Real Tuning Steps
What P, I and D each do to a line follower, why most builds need only P and a little D, and…
Tutorials
I2C vs SPI vs UART in Robotics: Picking the Right Bus
Two shared pins for slow sensors, four for speed, two for distance: what each bus costs in pins, range and debugging time.
Tutorials
Arduino rotary encoder interrupt: counting without missing edges
Put channel A on an interrupt, keep the ISR short, convert counts to RPM, and diagnose the missed edges that make speed…
Tutorials
Gesture controlled robot with Arduino and an MPU6050
Mount the IMU on your hand, filter the tilt, map gestures to commands and add the 400 ms radio timeout that saves…
Tutorials
Pick and place robot arm with Arduino: torque first, code second
Size the shoulder servo before buying anything: payload, reach and safety margin, then the pin map, sequence and grip test.