Content for Keypad

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.

Ardu14: An Arduino-Based Emulator for the Science of Cambridge MK14 Micro Computer

“This project is based on the “Portable MK14 emulator in ‘C’”. While I’m not certain of the exact origins, I discovered it in Doug Rice’s Virtual MK14 GitHub repository. Doug and Hein Pragt’s websites were valuable resources …

DIY $8 Mechanical Numpad (with Arduino Compatible Firmware!)

“A few months ago, I developed and open source the 4xMacropad, a $3 macropad made using CH552G. After seeing much of the feedback from the internet, I notice I can better utilize this chip to make a keyboard with more …

Project  Midbar V5.0

Midbar V5.0

“Midbar is my attempt to learn from the mistakes made by others (and later from my own mistakes) to make a better password vault. After making several different versions of Midbar, improving the encryption algorithm, improving the way it handles …

The Pico Dev M3 Board Transforms into a Rotary Encoder

“I designed two custom PCBs based on the unique features of the PICO DEV M3 development board. The Pico dev m3is a development board based on the RP2040 chip, the board has the same functions and capabilities as the raspberry …

Programmable Keypad Rev B

“This is second hardware revision for Programmable Keypad project I made some time ago. General concept and code for this project has not changed. So please check original post for this project if you want to get better understanding about …

Lowcost Wireless Rocket Launcher

“This project allows to launch gunpowder rockets safely and with a lot of fun. (coutdown display with access code and sound). I enjoy launching gun powder rockets with my son Thomas. This project allows to make automatic launches from a …

Talking Bingo computer

“This is a talking Bingo computer made with a Arduino Nano Every. It can be set for 75, 90 and more.. Has 3 screens. This is a talking Bingo computer. It tells the choosen number and display is on a …

Decimal to Hexadecimal Converter

“This project shows how to convert a Decimal number into a Hexadecimal number using Arduino This project shows how to convert a Decimal number into a Hexadecimal number. The Decimal number is fed to the Arduino through a 4x4 Keypad …

Door Security System

“With the door security system, you can control it through the interface on the arduino. Firstof all, hello. I like to share and make projects which occours to me. This isbecause of I like to make software with patterning enviroment …

ESP32 Keypad Database Security System

“In this article, I am going to show you how I created my ESP32-based door lock mechanism using a keypad and a database to store my valid list of keycodes. The ESP32 board interfaces with a keypad, an I2C …