You could combine all these …
… and create an Arduino sandwich like this – with full access to all the Arduino pins:
That’s a Plug Shield with, from left to right / top to bottom:
- UART Plug – with a hardware serial port
- RTC Plug – with a battery-backed real time clock
- Expander Plug – with 8 extra general I/O lines
- Memory Plug – with extra EEPROM memory
- Pressure Plug – with pressure + temp sensor
- LCD Plug – with a 2×16 char LCD display on top
Each of the plugs can be accessed via I2C, i.e. using the Arduino’s “Wire” library.
Would all this work? Yes, I’m pretty certain it would.
Would it be useful? Probably not in this combination…
I just wanted to show off the I2C plugs and shield ;)