Click here to Skip to main content
15,846,342 members
Articles / Internet of Things / Arduino

Keypad Scanning Hardware/Firmware

Rate me:
Please Sign up or sign in to vote.
4.82/5 (7 votes)
14 Jan 2011CPOL7 min read 50.3K   682   15  
Scan any size switch matrix using 5 general purpose I/O ports.


Daily Counts


Weekly Counts


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Written By
United States United States
Currently enjoying retirement and working on projects without pressure, deadlines or any kind of management.

Comments and Discussions