I tried to use my MSP430G2553 launchpad with a keypad using http://www.pjrc.com/teensy/td_libs_Keypad.html http://bildr.org/2011/05/arduino-keypad/ ...
We would like to build a calculator using Arduino which uses 3 digit LCD and a keypad similar to digital phones. (# for plus , * for minus) Which components and way is good enough to not to run out of ...
I need to connect a piezo keypad to a microcontroller. One one side of the key I plan on supplying 3.3volts. The other side of the switch will be about 200mv to 1.5 volts depends on how hard they hit ...