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{ 360Labs }Case Study
{ Hardware and IoT }·

SwitchOS

Custom Arduino-based home automation system replacing traditional wall switches with relay-controlled smart switching. Controls household appliances with real-time LCD status display, wired into mains alongside existing switchboards.

SwitchOS
// overview

A fully functional smart home controller built from off-the-shelf components for under $10. No cloud, no app, operates standalone with physical and programmable control. Designed to retrofit into existing Indian household switchboards.

// specs

Specifications

MCUArduino Uno (ATmega328P)
Switching4-channel 5V relay module for mains appliances
Display16x2 LCD (HD44780) with I2C backpack
CostUnder $10 in hardware
// features

Features

  • 01GPIO-driven relay control logic for independent appliance switching
  • 02LCD status display showing real-time ON/OFF state
  • 03Firmware in Embedded C/Arduino for relay sequencing and debounce handling
  • 04Mains isolation via relay module, low-voltage control separated from 220V AC
  • 05Expandable to serial/Bluetooth/Wi-Fi with additional modules
// tech stack

Tech Stack

Arduino UnoATmega328P4-Ch RelayHD44780 LCDI2CEmbedded C

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