18:01
Description: Do you need a lot of space? EEPROMs not quite enough? How's 1GB sound? This is a socket used to interface to SD (Secure Data Disk) and MMC (Multi Media Card). We used it to test out our 'PIC to FAT16 on SD' routines. The SD/MMC cards use a very simple SPI serial bus as well as a 4-bit proprietary bus.
Note: This version is taller than the older version, but all other specs are the same. We have a limited quantity of these. It is about 4.8mm tall instead of 2.8mm.
Resources:
- SFE Eagle Library has this part!
- Adding SD to a Router - Thanks Jake!
- MMC to Serial Adapter
- PIC MMC Interface Project
- Example MMC Interface Code
- SD/MMC Socket Datasheet
, but modified to be more hacker-friendly. It comes with three high speed USB host ports, uses the power connector from the Sony PSP (instead of the weird, hard to find connector on the Chumby One) and incorporates a variety of headers, such as Arduino-style shield headers and a 44-pin breakout header that gives you access to a lot of digital I/O and some analog inputs. There’s even a four-directional switch on board and some LEDs so you can do quick hacks that don’t require a video display for user feedback. Speaking of the display, while this board doesn’t come standard with an LCD, it does provide composite video output via a 4-wire 1/8″ jack so you can, by using an iPod video cable, plug the chumby hacker board into any TV that supports a composite video input.