Keypad Entry System With PIC16 Microcontroller and Solenoid
https://maker.pro/pic/projects/diy-keypad-entry-system-with-pic16
Build a 12-key keypad entry system that only unlocks itself when the correct passcode has been entered.
Build a Laser Tripwire Security System With Keypad Entry
https://maker.pro/pic/projects/how-to-build-a-laser-tripwire-security-system-with-keypad-entry
Make a laser tripwire system with a key code system to prevent unauthorized disabling and enabling of the alarm.
How to Make an Arduino Keypad Door Lock With Micro Linear Actuator
https://maker.pro/arduino/projects/arduino-keypad-door-lock-micro-linear-actuator
Use this discreet bolt system to open and close just about anything only after a PIN entry on a keypad.
Keypad ESP32 OLED System
https://maker.pro/arduino/projects/keypad-esp32-oled-feather-system
Keypad + Display system that shows user input and sends the number to a database
Raspberry Pi Pico emulator - Keypad and LED interface project
https://maker.pro/arduino/projects/raspberry-pi-pico-emulator-keypad-and-led-interface-project
Using a free Raspberry Pi Pico emulator, learn Arduino style coding for Raspberry Pi Pico and membrane keypad.
Arduino Digital Code Lock Project Using Matrix Keypad
https://maker.pro/arduino/projects/arduino-digital-code-lock-project-using-matrix-keypad
This project shows you how you can build a digital code lock with Arduino and Qwiic.
How to Make an Arduino Keyless Door Lock System With Keypad and LCD
https://maker.pro/arduino/projects/arduino-keyless-door-lock-system-keypad-lcd
Use an Arduino to make your own keyless door lock system with LED display.
CoH Quick Sell
https://maker.pro/arduino/projects/coh-quick-sell
Before Tink Keys, I was using the KeyPad library on one of these. I had some code to quickly click mouse buttons to sell things to vendors when they are in numbered stacks. This would occasionally jam if I pressed keys while the code was still doing mouse clicks and delays. Here is the Tink Key type of solution: a queue of click sequences!
How to Create an Arduino-Controlled Calculator
https://maker.pro/arduino/projects/how-to-create-an-arduino-controlled-calculator
Learn how you can create your own calculator using an Ardunio UNO, a 4x4 keypad, and an LCD display!