Need a Very small and simple Project
Consist in a pic 16f628a 4x4 matrix keypad
Need to read the key pressed , then send the data to a other device i already have ( data/clock input ps2 port)
will need the sorce code and the scheme how to connect the keypad
I will need to use the internal 4mhz oscilator from the pic and can be used 4 10 k resistors if needed
This is not a new project.. i am trying to recover a lost project , i have my last 10 microcontrollers whit this hex and then im done ( Have lost the c files)
my matrix is the basic
line 1 - 1,2,3 , enter
line 2 - 4,5,6
line 3 - 7,8,9
line 4 - 0 ,#,*
column 1 - 1,4,7,0
column 2 - 2,5,8, #
column 3 - 3,6,9,*
column 4 - enter
I need the most easy interface , maybe using pull up resistors or something like that
I have not experience in microprocessor so i will need some help setting this.
Prefere Portugues ( Brazilian people) or Spanish speakers.
I will need to develop a lot of small projects like that in a short time.
I will attach some pics showing my existing pic i already using.
Remember , i will connect this 4x4 keypad to a ps2 port.
I have already pay for this project but the result was not the expected , so i am trying this again
thanks in advance
Dear.
i can help you in setting up the schematics(connecting pic with key pad), for programming part you will get the working code on Monday, 28th October 2013. one of my colleague will write the code in C language. we can also provide the code written in basic and assembly languages.
Regards.