Product Idea: USB Flash Drives

[Arwen]

The Teensy 4.1 board does look like a good development platform. The only real thing to add is a QSPI flash chip or 2 for data storage. If the code size exceeds the 8MB built in program flash, it does appear you can use another, separate SPI.

Of course, during development the Micro SD card comes in quite handy.