Arduino Nano Based LC meter with Temperature sensor.

Project Type: Embedded Project.

Platform: Arduino 

Board: Arduino Nano

Microcontroller: ATmega328P   

Features:

• Uses colpitts oscillator to measure inductance effectively with LM311N comparator.
  
• Single PCB hardware interfacing
• Bulit in OLED display.
  
• Rechargable li-ion battery.
  
• Low cost hardware design
• DIY friendly. 

Project Preview:

 

Known issues:

• The capacitance measurement is not effective enough for unstable oscillation.

Technical details:

This project is based on the frequency deviation of colpitts oscillator, depending on the L And C values. As directly measuring the frequency is not realiable enough, a complex algorithm deveped by Neil Hetch was used for better calculation. 

 

The functional flow chart of the project is shown below.

 

Code:

PCB Preview: