Digital Ohmmeter Circuit Design
by aybikeavci07 in Circuits > Arduino
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Digital Ohmmeter Circuit Design
Measuring resistance accurately is a crucial task in various electronics and engineering applications. In this project, we designed and implemented a digital ohmmeter using an Arduino Nano and an LCD display to measure the resistance of unknown resistors.
This ohmmeter leverages the simplicity and reliability of a voltage divider circuit. By connecting an unknown resistor in series with a reference resistor, the circuit measures the voltage drop across the unknown resistor. The Arduino processes the data and displays the resistance value in real time on an LCD screen, making the system user-friendly and efficient.
You can see (and I hope you like :D ) the video of the circuit on YouTube: https://youtu.be/8y6ASUdMpxs
Supplies
Ardunio NANO
LCD Screen (16x2)
Cable
2.2 kohm resistor for LCD screen contrast
1 kohm for reference resistor
1 unknown resistor
Tinkercad Design
Tinkercad Pre Design
Schematic of Circuit
Here, connections are shown in detail.
Ardunio Code
Original Code
Downloads
Ardunio Revised Code
Revised code