Auto-Greeting project help

[lundymei]

I am thinking of building an auto-greeting circuit for my final project.
My idea for the project is using two sensors A and B.

A message will play when both sensors A and B detected a signal.

If sensor A detected a signal first then B, message 1 displays.
If sensor B detected a signal first then A, message 2 displays.
Both sensors are down, offline when either message is playing
and back, or online after finish playing.


Any ideas are appreciated

Once again Thank you.

 

[Exo]

what do you mean by 'playing a message' ...

a sound message ? or a display ?...
in the case of sound you have these IDT (changed name ?) digital audio chips on wich you can store a message...

and the sensors would be easely handled by a pic...


are you allowed to use a pic/other µC ?

 

[lundymei]

the messages are sound greetings.

and

yes, we allow to use pic. in fact anything goes in
this project.

 

[Sebi]

ISDxxx "ChipCorder" available with 16...120sec recording capability.
The original manufacturer Internationale Storage Devices, nowadays Winbond.

 

[Exo]

Well then, google for the IDT devices at Winbond (thx Sebi).
You can record a sound message on them, and you can easely trigger playback with a pic...

Monitoring 2 sensors with a pic to see wich one was activated before the other is easy enough too...

Nigels Tutorials should get you started if you never played around with pic's before...

 

[lundymei]

thans to all.