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From the article... https://hackaday.com/2021/01/24/physically-huge-sd-card-technically-has-some-benefits/ SD cards were developed and released just before the turn of the millenium. Since then, we’ve seen smaller formats, miniSD and microSD, become popular for portable devices. However, sometimes bigger is better. [Useless Mod] dared to dream that dream, and put together a (physically) gigantic SD card. In card is a full 10x scale reproduction of a SanDisk Extreme Pro SD card, complete with packaging, too. Built out of layers of laser cut MDF, it’s spray painted and given a high-quality label to complete the effect. The write protect slider instead serves in this case as a latch to open the assembly. Inside, there’s a simple regular SD card slot, wired up to the bigger card’s giant contacts made with copper tape. These interface with an huge 10x scale SD card slot, which acts as an adapter, allowing the giant SD to be used with regular hardware like cameras. The giant SD might seem silly, but it has plenty of useful features. There’s flashing LEDs behind the label that make it easy to find if you drop it, along with an Apple Watch hidden inside that means it can be located using the Find My iPhone service. We’d have loved if it featured a RAID array full of 10 or more SD cards, as well, just to justify its enormous size. That said, [Useless Mod] points out that it’s big enough to keep a DSLR dry in a rainstorm when fitted to the hotshoe, so there’s that. It’s a fun build, not a serious one, but one that we enjoyed on its merits. We suspect that, regardless of the card inside, you’ll have little luck recording at 4K with such long wire lengths in play. If you’ve ever had more normal compatability problems with the format, consider that it could be size causing your issues. Video after the break. physically_large_sd_card.webp