Tutorial: How to use 4x4 Keypad | Arduino
#TechToTinker Keypad is commonly use in devices like ATM machines, microwave oven, safety vault, security door lock system, and many others.
In this tutorial, we will focus on the most popular to electronics enthusiasts and tinkerers which is 4x4 matrix keypad. We will discuss how it works and at the last part, we will provide a working Arduino sketch so you may try it.
For more details, visit my blog post:
https://techtotinker.com/2020/07/28/t...
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