Can matrix keypad be used? | Microcontroller › AVR › Can matrix keypad be used? This topic has 1 reply, 2 voices, and was last updated 9 years, 11 months ago by AJISH ALFRED. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts April 21, 2013 at 3:57 am #2281 Mridul AgarwalParticipant Hi, I have posted my questions for my project but I hope this is the last one. Can I use matrix keypad as input in a circuit as well as in a progrmme which uses mobile as its input. I mean to say which uses mobile frequencies as its input. April 21, 2013 at 6:58 am #9551 AJISH ALFREDParticipant Hi Mridul, I think you must modify your code and your hardware accordingly. Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In