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Issue #209 December 2007
SD Card Display Controller
Honorable Mention Luminary Micro DesignStellaris2006 contest
by Sylvain Davaine
Sylvain’s LM3S811-based SD card display controller enables you to input data to portable devices. The system regularly reads temperature and relative humidity data from an onboard sensor. The data is then displayed on a tablet PC as part of a picture slideshow.
Start | System Overview | SD Memory Cards | Hardware | SHT11 Sensor | FAT File System | Graphic Files | Library | Host | Ideas | Sources & PDF
Many of the electronic appliances I have at home—including a PC, a tablet PC, a pocket PC, a mobile phone, and a digital camera—have one thing in common: they all have an SD card interface. The interface quickly rose in popularity because its convenient small format, storage size, and price are better than its competitors. Even the cheap CompactFlash is now used only in professional digital cameras.
I wanted to use a large readable color LCD in a previous project, but the only reasonably priced LCDs I could find were those found in mobile phones, which were rather small! At the time, I had to use a large, quite ugly, 240 × 160 graphical monochrome LCD.
In the meantime, a friend of mine bought a 7² digital frame display with an SD card port for approximately $90. Thus, I decided to convert a digital frame into a display. Think of a weather station with such a large color display!
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