There are a number of project risks:

- Design skill. I typically do software. Stitching hardware is new to me.

- Limited programming space. How tiny is the Trinket? I need to talk SPI to my target display and clock source while having space to do a TOTP. I may have to remove uneeded code from support libraries.

- Size of components. Trinket small... Display not small.

- Implementation time. I expect my adafruit delivery on Friday Dec 5th. Who needs sleep?