This project is an Arduino-based calculator that uses a 4x4 keypad for input and an I2C LCD for output. The calculator can perform basic arithmetic operations such as addition, subtraction, ...

DESCRIPTION : This project demonstrates how to interface a 4x4 matrix keypad with an LCD (16x2) display using an Arduino board. The system captures key presses from the user via the keypad and ...

4x4 matrix keypad で色を指定して、NeoPixel の色を自由に選択するプログラムを作ってみましょう。 4x4 matrix keypad の利用 4x4 Keypad（キーパッド）は、複数のボタンをまとめて入力できる装置です。 micro:bit に接続して、ボタンの押下をデジタル信号として読み取り ...

A keypad is one of the most commonly used input devices in microprocessor applications. In a standard keypad wired as an X-Y switch matrix, normally-open switches connect a row to a column when ...

Arduino enthusiasts or those looking to learn more about programming with Arduino and electronics-in-general may be interested in a new Kickstarter campaign and Arduino compatible 42-Digit SPI Keypad ...

micro:bit で数あてゲームを作るとき、数字の入力をどうしようか、少しまよいますよね。4x4 matrix keypad を入力デバイスにして、数あてのプログラムを作ってみましょう。 4x4 matrix keypad の利用4x4 Keypad（キーパッド）は、複数のボタンをまとめて入力できる装置 ...

Often times, we need to secure a room at our home or office (perhaps a secret dexter’s laboratory) so that no one can access the room without our permission and ensure protection against theft or loss ...