Some Adviced Needed Please.

[Archangel]

thanks for the reply.

firstly this is not homework... and im not looking to have the code written for me im sure i can manage the code.

Good, My Apologies, I thought maybe it was. We see many of those appear about finals time.

. . . the reason i was looking at sd cards was for storage space and being able to be read directly by the pc.

And the reason I was <b>not</b> thinking SD cards is their size and added complexity of the device.

the idea is to place the completed project inside a fake egg to monitor temperatures in the nest of a peregrine falcon (captive bread not wild)
this would not be feasible with my original serial logging design

my objective is to log for long enough to reach max egg temp in the nest and also patterns of sitting and night/day temps

logging the temp in 12bit from the ds18b20 means using 2 bytes of memory for every temp logged.

so if i say log every 30secs, that would mean 2880 bytes for every 24hrs
that would be an ideal starting point.

so again suggestions welcome on what hardware to use most appreciated.

Several options, Melanie (as always) laid out a good one. There are some very small RF Transmitters, if storing or retrieving data "OFF EGG" is permissible. You could transmit data and clear eeprom after for continuous monitoring, of coarse now the device is getting crowded in that egg. It sounds like a worthwhile project, keep us posted.
One more thought: What about those passive infrared point and check thermometers ? Maybe easier to hoodwink the Falcon into thinking it is a nest stick . . .