April 20, 2014

DIY: Students Project Battery Level Indicator with Circuit Diagram

DIY Students Project Pakistan

Battery level indicator is a type of indicator which detects the voltages of a battery and shows the condition of battery on seven-segment display or on LED level bar.

I have got a chance to make battery level indicator as my university semester project and I decided to share the procedure on this blog.

Introduction: (How to make battery level indicator ?)

The aim of this project is to make a simple user friendly battery level indicator which provides a linear analog display output and will be configured to display the output on seven segment display.

Electronics Components:
  • Resistors (Fixed Value)
  • Variable Resistor
  • Zener Diode
  • LED
  • IC

LM339N Quad Voltage Comparator

Circuit Diagram:

circuit diagram battery level indicator

Implementation on Bread Board:

battery level indicator 1

battery level indicator 2 on circuit board

battery level indicator 3 on bread board

Use IC # LM339, Zener Diode of 5 Volts.

Connect the circuit with 12-Volts DC battery. Adjust the 2-K variable to calibrate the circuit with battery.

Video: (link)

The next phase is to implement the circuit on circuit board / soldering. Keep visiting for next update.

In our upcoming post we will discuss the complete process of solar panels installation in Pakistan and how can we power our homes with solar power.

Pakistan Zindabad

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