这款基于 Arduino 的双模式科学计算器是一种多功能且高效的工具，可用于基本和高级计算。在普通模式下，它用作标准计算器，通过 4×4 键盘执行加、减、乘、除。结果清晰地显示在 OLED 屏幕上。按钮开关可在模式之间无缝切换，以增加灵活性。

If you want to add a keypad to your Arduino project, the options are pretty limited. There’s that red and blue 4×4 membrane we’ve all seen in password-protected door lock projects,… ...

Keypad pin 4 to Arduino digital 8 //R4; Keypad pin 5 to Arduino digital 4 //C3; Keypad pin 6 to Arduino digital 7 //R3; Keypad pin 7 to Arduino digital 6 //R2; Since keypads are available from many ...

If you're new to Arduino, you'll mostly be using the Arduino IDE. Cloud: Teaches you how to set up and use the online platform Arduino Cloud for your IoT projects.

arduino keypad lock 1 Articles Arduino Keypad Door Automation. November 1, 2013 by James Hobson 45 Comments [Andrea] just sent us this great student hack he made for his room. He’s ...

Watch the video below to learn more about his Arduino-based portable keypad that connects to your Arduino development board and offers the complete alphabet, numbers 0-9 as well as several commands.

Create a Keypad Lock. Put Arduino to work protecting your secrets. This project is a keypad-controlled lock that will allow the user to select a six-digit secret code and lock out anyone without it.

1Sheeld connects your Arduino to your smartphone (Android only, for now) to hook into its display, accelerometer, magnetometer, Wi-Fi, cellular connectivity, GPS, gyroscope, etc.

If you have an old rice cooker, grab your soldering iron: now's your chance to try the cooking sous vide, a cooking method we love.With a little effort, some supplies, and an Arduino at its heart ...