One day earlier than expected, our tinyK20 boards arrived, and they are looking great :-):
It always is a moment of fear when I debug a new board like this, as there is always the risk that something went wrong. But all the due diligence and peer reviews paid off so far: debugging the first board worked like a charm:
We produced four boards as a ‘unit’, and the boards will be then broken out the frame:
Top side of the board:
Bottom side of the board(s):
On the board there are footprints for optional micro-SD card, 32kHz clock and DC-DC converter.
On option is to place the 32kHz clock source on the top side. Additionally a larger C can be populated if an extra DC-DC converter is added on the back.
On the bottom side there is the option to add a 3.3V DC-DC converter to provide enough power if the SD card is more power hungry than the K20 can provide with the internal 3.3V converter:
We will work on the initial set of documentation for the students so they can sucessfully use the boards in their next projects.
Happy tinying 🙂