In a recent thread, I suggested that somebody get themselves an I2C Test card to test access on a door, to see if it is compatiable with an xSIID.
That, is one use for this card
https://dangerousthings.com/product/nitc/
BUT
I don’t currently have one, however, I am thinking of getting one.
Has anybody made “A THING” with one?
Practical or Not…But maybe just a little more practical than lighting up some LEDs
Here’s a good example
Also a couple of padlocks I reviewed used the I2C power harvesting to unlock ( Quite clever yet basic really )
Data sheet For reference if someone stumbles on this thread and wants some more info