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Mini Project Topics and Ideas in Electronics

12:31 PM - By Thirumalai Kumar 0

Simple Fire Alarm Circuit:


Here is a simple fire alarm circuit based on a LDR and lamp pair for sensing the fire.The alarm works by sensing the smoke produced during fire.The circuit produces an audible alarm when the fire breaks out with smoke.
When there is no smoke the light from the bulb will be directly falling on the LDR.The LDR resistance will be low and so the voltage across it (below .6V).The transistor will be OFF and nothing happens.When there is sufficient smoke to mask the light from falling on LDR, the LDR resistance increases and so do the…Read More on Simple Fire Alarm Circuit
Digital Sound Recorder with AVR and DataFlash:
Features
• Digital Voice Recorder
• 8-bit Sound Recording
• 8 kHz Sampling Rate
• Sound Frequency up to 4000 Hz
• Maximum Recording Time 4 1/4 Minutes
• Very Small Board Size
Electronics Mini Project Topics and Ideas:
  1. 4 Digit 7-Segment Multiplex DISPLAY
  2. Automatic Light Beam Shifting Of Vehicles On High Ways
  3. Automatic Speed Regulation Depending On Incoming Vehicle On High Ways(Fuel Injection)
  4. Automatic Light Lamp with Morning Alarm
  5. Automatic Exhaust Fan Control Coupled To Gas Leak Detection
  6. Auto turn off battery charger
  7. Anti Theft Alarm For Bikes
  8. Automatic Heat Detector
  9. Access Control System
  10. Autonomous Robot
  11. Altimeter — To Measure The Altitude
  12. Air Flow Sensor
  13. Automated Traffic Signal Controller
  14. Automatic Control For Unmanned Railway Gate.
  15. Automated Car Parking System
  16. Automated Vehicle Identification And Toll-Pass System

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