As SD and MMC cards are popular because of their simple SPI interface. It is ease to interface SD/MMC cards using any microcontroller. SD/MMC card storage may serve in many purposes like data logging storage , voice data banks, or store other information. There are a lot of free drivers available for for microcontrollers like Procyon AVRlib where MMC/SD Card Interface (SPI mode) is supported – just take and use it.
Main problem of using SD/MMC cars in your home projects is that card sockets are quite expensive. Rob Wentworth discovered that 5.25†floppy connector fits SD/MMC card pins and can successfully be used for your projects.
To prepare connector you will only need a pair of scissors and so some rewiring of cable.
Read more about it in uanr.com
Prototype cheaper!
I found this scienceprog.com web page in my access logs. It just keeps spreading. I guess a LOT of people really needed something like this to get around to adding an SD card to their projects.
As the initial traffic grew to over 2 GB/hr, my web host suspended my account due to “traffic overconsumption”. I had to switch to a web host that claims to have no traffic limit, which left my site down a couple of days while DNS propogated to the new DNS server at the new webhost. Although the traffic is dying down now, I am still getting up to a thousands hits per day.
I even have links to my site from web pages in foreign languages, in many countries.
Cool! I am glad people liked it. This is exciting. I have more ideas and plans. It would be interesting to see if I can get another “15 minutes of fame”.
Good luck in your brainstorming