The metal sheet was used to give the parts a solid platform.
I wanted to install this down in the basement, so I used a plastic storage box
(like Tupperware) as a dust cover.
Mounted the PCBs on aluminum and bolted the sheet and connection
strips on the inside of the storage box cover.
I will screw the cover onto the wall, and the 'bottom' of the storage bin
will just clip onto the cover. I'll cut some notches for the I/O wires.
I also got one of these..
SparkFun Electronics - Serial Enabled 16x2 LCD - Red on Black 3.3V
Want to display temperatures upstairs.