Designed for smart phones the SD card translating multiplexer interfaces 3 different input output levels between host and SD interfaces.

Cheap Surveillance Camera System [DIY] is another project I am working on. I plan to build a low-end surveillance camera with lowest BOM cost. The camera module is made up of a LPC21XX microcontroller, a serial camera. The image information that comes from the camera is encoded in JPEG, which can be stored directly into a SD card.