Keypad

A keypad is a set of buttons arranged in a block or "pad" which bear digits, symbols or alphabetical letters. Pads mostly containing numbers are called a numeric keypad. Numeric keypads are found on alphanumeric keyboards and on other devices which require mainly numeric input such as calculators, push-button telephones, vending machines, ATMs, Point of Sale devices, combination locks, and digital door locks. Many devices follow the E.161 standard for their arrangement.

Main Content

Connect 4 Playing Machine

“A 3D printed machine controlled by an Arduino that plays Connect 4. These instructions describe the making, assembly and workings of a Connect 4 game created for use with an Arduino microcontroller. The game consists of a purchased game board …

Universal Touch-Free Keypad Adaptor for Existing Keypads

“A device that mounts on top of a traditional keypad and transforms it into a touch-free and bluetooth controllable one. Nowadays we are all facing the Covid-19 pandemic; we know that there are multiple ways to get infected and one …

How to Make Arduino Calculator With LCD Display

“In this post, I tried to make an Arduino Calculator very easily using Arduino Uno R3. The values can be sent in through a keypad (44 keypad) and the result can be viewed on an LCD screen. This calculator could …

rotary_dialer

“Use old telephone rotary dial as a USB numeric keypad; includes 3-D printer files. Use an old AT&T Trimline rotary dialer as a numeric keypad for your computer. Disassemble the phone handset and extract the dialer. The 3-D files …

Voice Controlled Arduino Smart Home - Without Wires

“Just say the needed temperature, control your home with voice or Android! Two units on synched Bluetooth link, RFID functions… A full home automation Arduino project with voice control - without wires. I designed, built and programmed it in my style …

Alarm Keypad MQTT ESP8266

“In this Instructable I show you how I made a battery powered keypad to enable and disable my home alarm. In the future I plan to make an improved one which has a RFID reader included and which is not …

HotKeys Keyboard With Custom Profiles

“Being an Industrial Designer, I need to access more than 7-8 software which includes Solidworks, Photoshop, Illustrator, Keyshot, Indesign, etc. on a daily basis and yes few games also. So, I experienced two issues from which this device comes to …

Phone Coffer

“I’m addicted to my phone, which I can not focus on my homework. Every day when I go home, I play with my phone first, then about 10 p.m. I started my homework, which is too late. So …

Arduino Calculator Using 4X4 Keypad

“In this tutorial we will build our own calculator with Arduino. The values can be sent in through a keypad (44 keypad) and result can be viewed on a LCD screen. This calculator could perform simple operations like Addition, Subtraction …

Keycode Security Starter, Part 1

“If you are like me, you enjoy the charm of driving an older vehicle. The mechanical feedback from the car is more organic. You aren’t surrounded by safety and driver aid systems that jump at the opportunity to correct …