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.

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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 …

Resistor Storage Location System “Resys”

“This is a system that makes it easy to find your resistors. Search at desired value, and the right drawer lights up. This system can be extended to desired numbers of drawers. Supplies: Adressable LED’s WS2812B Arduino Nano 4 …

Modern and New and Easier Example of Locker With Arduino Matrix Keypad 4x4

“Another example of using a LCD keypad matrix 4x4 with an I2C circuit. This matrix keypad is made of 16 push buttons and with I2c communication, you just need 2 pins to manage it: SDA (A4 on arduino board) and …

arduino-switcheroonie

“A really simple macro keyboard project using an arduino. Useful for OBS for switching between scenes etc. Roughly costs about $5-6 in total and as you can see below it’s really simple! Hardware - Arduino Pro Micro - 4x4 Keypad - Perfboard …

DIY Bluetooth Macro Keypad

“In this Instructable we are going to take a look at using the built-in Bluetooth of the ESP32 to emulate a Bluetooth Keyboard. Bluetooth HID (Human Interface Device) is the protocol used by regular Bluetooth keyboard and mice and its …

IoT ISBN Verifier with Nokia 5110 Screen

“The project in a nutshell: I am fond of reading books and collecting them in my library and needed a simple way to verify whether I have a particular book when searching for an edition via ISBN and thus created …