If you need more memory for Arduino projects and EEPROM in ATmega chip is too limited then this SPI EEPROM module is your best choice. It is based on the EEPROM W25Q16 chip with a capacity of 16 Mb. It communicates with Arduino via SPI bus, facilitates much easier data storage and increases Arduino design possibilities. Technical data: Memory capacity: 16MBit Interface: SPI, Dual SPI Supply voltage: 2.7-3.6 V Dimensions: 21 x 12 mm https://elecena.pl/product/24591822/mcu-2516-w25q16-16m-eeprom-memory-module-spi 2023-12-07 https://elecena.pl/product/24591822/mcu-2516-w25q16-16m-eeprom-memory-module-spi 2025-10-29