Matrix user forums

heads up the circuit finally worked.. what i did was add pull down resistor in the column too.. so now both column and and row has 10k pull down resistor.... the program worked... tho its running really slow there are times that it worked normal but most of the time pic is really slow sometimes it f...

on my attachment is the exact circuit i am using to test my keypad and lcd.. and also the flowcode... after adding the pull down resistor "10k on each row" the random number popping out was gone. but still the keypad was not working... sorry for the schematic i dont know how to make it small

yes i am adding my own keypadd.. i tried adding 10k on each row.. but nothing works so far

hey i have a question.. apparently after making a transfering the my program to pic16f877a which is made in flowcode... after connecting it.. the lcd is just displaying number which is supposedlly need to be pressed first.. the keypad isnt even connected yet.... and when i tried connecting the 4x3 k...

LOL it's been forever

Here is the file i made.. i dont know if this is even working.. as i don't have my gsm module yet.. if the gsm recieve a text it will compare the number to the save number if its the same. then if its the same.. it will check the message then compare it with the save string message.. to either unloc...

ugh,, hey again.. everything was working fine,, until my prof out of his whim said i have to add gsm on it.. i should be able to unlock and lock it again using gsm.. i tried using the gsm on the flow code but uhm.. i dont know how that works.. i tried doing a flow code but it gets nowhere so do you ...

That thread was really helpful.. i am now studying every part of it.. and today i actually learnt of how to use that macro call.. it made the program very neat. i just have a question.. how would i know if my program is already exceeding what my chip can handle i mean,, my professor told me i should...

Yush.. after trying it on breadboard.. the keypad actualy work if i just connect it in parallel with the first keypad now im on the last phase of the project.. my proffesor want it so that i can change the password anytime i want,, without reflashing the flowocode.. the password can be change by the...

Here.. ugh i just added some servo on your original file, i wanted it to have like both can be operate outside and inside the door.. the 2 lcd worked but when i tried to do the same with the keypad it doesnt,, btw do i really need to put the second lcd in my program or i can just connect it in paral...

after doing some touch i added a few stuffs on medelecs flowcode for door lock.. i wanted to have a 2 keypad one in the inside and on the outside.. so the door can be lock and unlock inside and out with only keypad.. but my problem is i cant seem to make the second keypad to work.. it never displays...

SWEET.. its like everything i needed is there.. i'll just do a bit of a modification for my own goal.. thanks man .. so cool.!!

hello guys.. i have a questions..
i am currently making a project that will store a password.. i've already done making the lcd and the keypad work,, now how do i go about storing passwords.. for it

hi.. uhm i made a list.. and finally arrived at this answer i think.. i will go for a media device.. like playing mp3.. i really like musics. Hmm i know a few things like using input and outputs,, using variables, i know how to use loops and calculation too.. but using component macro is giving me a...

Yes.. i am using flow code avr Version 5.. i'm sorry because i'm really lost.. i dont know where to start or what to do i only know the most basic part of flowcode. and my proffesor just throw this project at me he ask me to do whatever i can do with this chip so thats about it.. any idea what to do...

Hello.. uhm i was wondering if you guys can help i was ask to make any program for atmega32, the problem is i don't really have any idea what to do, and also ofcouse make the circuit for that program.. if you can just give me some ideas maybe on what i can do with this chip that would be very helpfu...