If you’re going to develop another Arduino-compatible board these days ... The Smart Citizen Kit piles it on, including Wi-Fi, an SD card slot, and EEPROM on its base. The attached shield ...

A rotary tool was used to make a tidy slot for the microSD card. The ReMarkable already has a set of pads for an SDHC interface on the main board ... can mount a second SD card with the right ...