DESIGN The 4x4 matrix keypad consists of 16 keys arranged in rows and columns. Each key press generates a unique combination of row and column signals, which can be decoded to determine the pressed ...

Arduino Code for Dual-Mode Scientific Calculator. The source code for the calculator has been developed using the Arduino IDE. The Adafruit SSD1306 OLED display library and the Keypad.h library are ...

This repository explores the interfacing of 4x4 keypad with an Arduino, but without using any built-in headers. The goal is to completely learn the interfacing mechanism from scratch. The code is ...

Using a CNC machine, the calculator has been constructed using a wooden case together with acrylic screen protector, and a little Arduino hardware. Featuring an Arduino Nano microcontroller board ...

But not so if you’ve got this beautiful custom RPN calculator in a wooden case. This one comes to us from [Shinsaku Hiura], who generally dazzles us with unique mechanical clocks and displays .