I recently bought a dozen RP2040 ProMicros with USB-C and 16MB flash for about $2.70 each, and there's variants with smaller flash for even less.
This store, if you're wondering: https://www.aliexpress.com/item/1005006130019224.html
0. https://www.raspberrypi.com/documentation/microcontrollers/d...
1. https://argon40.com/en-gb/products/argon-one-v3-m-2-nvme-cas...
I recently bought a dozen RP2040 ProMicros with USB-C and 16MB flash for about $2.70 each, and there's variants with smaller flash for even less.
This store, if you're wondering: https://www.aliexpress.com/item/1005006130019224.html