OHMIC-CALC: Arduino Calculator + Resistor Analyzer (4, 5, 6 Band) | Easy Tutorial

Published at : 23 Dec 2025

OHMIC-CALC: Arduino Calculator + Resistor Analyzer (4, 5, 6 Band) | Easy TutorialVideo DescriptionHello everyone and welcome to the channel's seventh project! Today we build an essential tool for electronics: the OHMIC-CALC, a Dual-Mode Calculator that not only calculates but also analyzes resistor color codes!✨ Our Simplified MethodThis project is built with maximum simplicity. If you find standard technical schematics complicated, don't worry! My method is based on visual simplicity and clear steps. I will show you the connections (especially the pinout) in an intuitive and immediate way, designed for anyone who wants to learn electronics practically and quickly.This tutorial is dedicated to everyone, particularly the community in Ghana, who wants to build a professional tool with accessible components.🛠️ What You Will Learn in This VideoBuild a complete calculator (addition, subtraction, multiplication, division).Implement a dedicated decimal point button (Pin 12) for accurate results.Analyze and calculate 4, 5, and 6 band resistors (including Tolerance and Temperature Coefficient).Use a single button (Pin 11) to cycle through different resistor types.Get clean results, without unnecessary trailing zeros!🔗 RESOURCES & CODEDownload the complete code (Arduino sketch) and all materials for the OHMIC-CALC project here. Copy and paste directly into the Arduino IDE!➡️ Link to Materials and Code (Complete Arduino Sketch): https://drive.google.com/drive/folders/1YhYtqgzz-UDebvw7feNXW8Z_-1amLeAq?usp=sharing📦 Materials Needed (Shopping List)ComponentKey DetailEstimated Price (Low)MicrocontrollerArduino UNO (or Clone)[Insert Local Price]DisplayLCD 16x2 I2C (Serigraphed Module)[Insert Local Price]InputKeypad 4x4 Membrane Matrix[Insert Local Price]Buttons3 x Push Button (for Mode, Band, Decimal)[Insert Local Price]AccessoriesBreadboard and Jumper Wires[Insert Local Price]📌 Wiring Diagram (Essential Pinout)I2C LCD DISPLAY:SDA → Arduino A4SCL → Arduino A5EXTERNAL BUTTONS (INPUT_PULLUP):Mode Switch → Pin 10 (to GND)Band Toggle (4/5/6) → Pin 11 (to GND)Decimal Point → Pin 12 (to GND)4x4 KEYPAD:Rows (R1-R4) → Pin 9, 8, 7, 6Columns (C1-C4) → Pin 5, 4, 3, 2⏱️ Video Chapters (Timecodes)Here’s how to quickly navigate the tutorial:0:00 Introduction and OHMIC-CALC Project Goal0:45 Required Materials and Simplified Pinout2:30 Code Analysis (Mode Logic and Custom Functions)4:15 Test 1: The Calculator and the Decimal Button (Pin 12)5:50 Test 2: 4 and 5 Band Resistor Analysis7:20 Test 3: 6 Band Analysis (Temperature Coefficient - TC)8:30 Conclusion and Farewell🔗 Stay Connected!Subscribe to the Channel! 🔔Leave a comment with your next project idea!#Arduino #EasyElectronics #ArduinoTutorial #ResistorCode #6BandResistor #OhmicCalc #STEM #GhanaTech