The Raspberry Pi Pico comes with 2 MByte FLASH. If more is needed for example to store data or for a data logger, this article shows how it can be extended with a 16 MByte serial flash using the LittleFS file system.
1.54 inch Programmable E Ink module, Touch Screen, Front-light
Expand Your Raspberry Pi Pico's Memory by Adding a microSD Card
Add extra Storage to the Raspberry Pi Pico with W25Q128 and
1.54-inch tri-color e-ink display module with built-in Flash chip
How to write to an SD card with the Raspberry Pi Pico
Erich Styger, MCU on Eclipse
BLE with WiFi and FreeRTOS on Raspberry Pi Pico-W
$7 DongshanPI-PicoW is a small Arm Linux board with SSW101B USB
/wp-content/uploads/2021/04/Arduino
How to write to an SD card with the Raspberry Pi Pico
Flash Cart
Add extra Storage to the Raspberry Pi Pico with W25Q128 and