Electronic Project Ideas
Beginner Electronic Projects
- LED blinking circuit (555 timer / transistor)
- Night lamp using LDR
- Clap switch circuit
- Touch switch
- Simple regulated power supply (7805 / LM317)
- Battery level indicator
- Doorbell circuit
- Continuity tester
- Water level indicator
- IR obstacle detector
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
ExotElectronics