Guides

What Is UART Serial? Wiring and Errors (2026 Gu...

UART explained: TX/RX wiring, matching baud rates, SoftwareSerial for a second port, and a real CP2102 wiring table, with India pricing (COD).

What Is SPI? Pinouts, Wiring, and Common Errors...

SPI explained: what SCK/MOSI/MISO/CS do, the Uno hardware SPI pins, and a real MAX7219 LED matrix sketch, with India pricing and where to buy (COD).

What Is I2C? Pinouts, Wiring, and Common Errors...

I2C explained: what SDA/SCL do, pull-up resistors, and a real I2C scanner sketch for Arduino Uno, with India pricing and where to buy the parts (COD).

Final-Year Electronics Projects 2026-27: 15 Ide...

15 final-year electronics project ideas for 2026-27, each with a full parts list and real Rs. price from our live catalog. COD available across India.

How to Build an RFID Attendance System

A step-by-step guide to building an RFID attendance system that logs tap-ins with cards and stores records you can review.

How to Build a Gesture-Controlled Robotic Arm

A step-by-step guide to building a robotic arm you control with hand gestures using an accelerometer glove and servo motors.