I am not an electronic person and found this site in a my quest for the perfect calculator. I use both a phone and calculator for calculations and find the back and forth to cause me to make errors ...
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 ...
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 have this three keypad connection sketches, all of which i've seen in various application, and some i've also used, but i want to know if there is any advantage of one over the other. The keypad ...
I receieved this 4x4 keypad in an electronics kit, but don't know what the pins (it has 2x5 pins), are, and can't seem to find a data sheet for it. Any info or help is appreciated!
I am using a PIC16F877A, running at 20 MHz. I have two paralleled, 3 columns, 4 rows keypad. My setup is as follows: KR1 to KR4 are rows, KC1 to KC3 are columns, and they all go to the ...