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, ...

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 ...

[Andrea] just sent us this great student hack he made for his room. He’s constructed an Arduino keypad door lock — without using any proper fastening hardware! The entire build is made out of scrap ...

今回は前回のLED点灯を押しボタンスイッチで制御します。押しボタンスイッチは、ボタンを押すことであらかじめ決まっているピン同士が接続されます。今回は押しボタンスイッチを押すことで、GND（0V）に接続されたピンとマイコンボードと繋がっている ...

This Arduino project provides a simple menu system for controlling the brightness of LEDs using button inputs. It utilizes an Arduino Uno and a keypad shield for user interaction. Relevant information ...

今回が最後のプロジェクトです。 フォトカプラーを使って、別回路の押しボタンスイッチを押します。 別回路はSTM32マイコンで用意しました。 これがその別回路です。 押しボタンスイッチを押すと、LEDが点灯します。 今回、Arduinoで作るのは、このSTM32の ...

The ARDUINO IDE associated with the ARDUINO board uses specific numbering, assigning numbers from 0 to 19 to digital pins 0 to 13 and numbers A0 to A5 to analog pins. GCBasic directly manipulates the ...

DIY musical instruments are their own thing entirely, but if you're looking for a place to start, Adafruit has a guide to building your own MIDI controller using an Arduino. The OONTZ uses a 3D ...

A lot of making goes on in this community these days, but sometimes you’ve just gotta do some old fashioned hacking. You might have grabbed an old Speak and Spell that you want to repurpose ...

Abstract: In an era where homeowners frequently leave for work or education, robust security for residences is imperative. Traditional security measures, including window and door locks, present ...