From the technical perspective here are my most interesting experiments. Several engineers told me – before they had seen the implementation – that they would not expect this to be possible.
First the Blinkenlight Shield will be used to implement a low resolution camera.
Blinkenlight Camera
Then I will use it for comparing Arduino Crystal Deviations.
Frequency Comparison
With some cheap external parts I will even use it to monitor the power grid.
Power Grind Monitoring
