Is it possible to share the Logger with 2 Uno boards?
The logging portion would be something that happens daily at night, it would be a small log (date and a sensor count number up to 9999). Im actually considering some form of EEPROM, but the logger makes it easy since it has the RTC and storage all in one.
Here is a basic mockup of what I was looking to make.
If its easier to run two small microprocessors then one mega I might just go with a pair of Ardweeny's, It depends on how things work out.
It will display time, temp and will have a counter for number of entry's per day, for the school library. And will log the daily entry count at night so that they will have some data on what days are busiest and such.
Right now its all in planning stage, id like to reduce the cost anywhere possible. The mega ($32), logger($19.50), and 128x64 lcd($24) make up 3/5 of the price atm. I also need to find a decent entry sensor, been looking at garage door safety beam sensors but they are $20-30. Cheaper the total cost is the easier it is to get the build approved.
All thoughts/ideas welcome