Electronic Project Ideas

Beginner Electronic Projects

Analog & Amplifier Projects

  • Class-A audio amplifier
  • Class-AB audio amplifier (2SC5200 / 2SA1943)
  • Audio preamplifier (NE5532 / TL072)
  • Tone control circuit (bass & treble)
  • Microphone amplifier
  • Headphone amplifier
  • Active crossover (2-way / 3-way)
  • Speaker protection circuit
  • Soft-start circuit for power amplifiers
  • Signal generator (sine / square)

Audio & Sound Projects

  • Hi-Fi stereo power amplifier
  • Professional PA amplifier
  • Audio mixer (4-channel / 8-channel)
  • VU meter (LED / LCD)
  • Bluetooth audio receiver project
  • Subwoofer amplifier
  • Audio selector (relay / IC based)
  • Digital volume control
  • Echo / reverb effect circuit
  • Audio spectrum analyzer

Power Supply & SMPS Projects

  • Linear power supply ±12V / ±35V
  • Variable bench power supply
  • SMPS using IR2153
  • SMPS using UC3842 / UC3525
  • Battery charger circuits
  • Solar charge controller
  • DC-DC buck converter
  • DC-DC boost converter
  • DC inverter (12V → 220V)
  • Basic UPS design

Microcontroller Projects

  • Arduino temperature monitor
  • Digital voltmeter & ammeter
  • Smart fan controller
  • Line-following robot
  • Digital clock with RTC
  • Smart door lock system
  • Bluetooth relay control
  • Audio spectrum analyzer (MCU-based)
  • Data logger with SD card
  • IoT sensor node

Test & Measurement Projects

  • ESR meter
  • Transistor tester
  • LCR meter
  • Signal tracer
  • Logic probe
  • Frequency counter
  • Dummy load for amplifiers
  • SMPS tester
  • Audio distortion meter
  • Speaker impedance tester

Home Automation Projects

  • Smart light control
  • Motion sensor lighting
  • Smart plug
  • Energy monitoring system
  • Water pump controller
  • Automatic street light
  • Smart thermostat
  • Fire and smoke alarm
  • Gas leakage detector
  • Door and window alarm

Educational Mini Projects

  • RC low-pass & high-pass filter
  • Op-amp inverting amplifier
  • Op-amp non-inverting amplifier
  • Comparator circuits
  • Voltage divider
  • Current mirror
  • Zener voltage regulator
  • BJT biasing techniques
  • MOSFET gate driving
  • Rectifier circuits