Hi everybody, I've just recived a FTDI801 display with integrated Arduino (pro/pro mini with atMega328) and i want to create such an alarm to activate school's bell. what do i have to do?
I'm still searching on the net but i can't find what i need. could someone help me? thank you so much
what do i have to do?
Define some requirements.
Connect some external hardware.
Write some code.
Test, swear, fix, and repeat until no more swearing is necessary.
Easy to say... thank you, really
Hi,
Welcome to the forum.
What is your electronics, programming, arduino, hardware experience?
Can you post a link to the data/spec of the FTDI801 display with integrated Arduino (pro/pro mini with atMega328)?
Thanks. Tom... 
Here you can find everything you need: http://www.ftdichip.com/Products/ICs/FT801.html
Talking about my arduino experience, i started programming it about three weeks ago. I can programm in C/C++, python, html. Now i need to complete this project but i don't know how to start 
but i don't know how to start
I listed 4 steps. Where are you on that list?
I'm at the third one. I now where I want to arrive, but not how to do it. I connected the display with the computer, I've also found a relay shield, i jìknow it's function, but i can't understand how it could be usefull for my project.
Hi,
Sorry your link is to the controller chip, not the board you say you have? ? ?
Tom....
I'm at the third one.
Actually, there were only meant to be 3 steps. Write, test, swear, repeat are one cycle.
We can't help you write the code, because all we know about your requirements are that they are done. Or, so you say.
Get an RTC then write a sketch that compare it's time to the alarm time.
Some RTC have alarm so you set alarm time and wait the activation of RTC pin using interrupt or polling it.
If you need that the bell must be activated at the hour start you can check when minutes are 0.