I am currently working on a data logging project using the Arduino Mega and the CAN-bus Shield from Sparkfun (http://www.sparkfun.com/products/10039) with the SdFat libraries. But now I am at a point where I am looking for ways to up my sample rate.
I found the Chipstobits Storage Shield (http://www.chipstobits.com/blog/storage-shield/) and it seems like a perfect solution by integrating another micro controller to handle all the SD formatting and writing and freeing up Arduino resources.
The only reason I haven’t purchased this shield yet is because I have questions about it and none of the contact points on the website have provided any response. I emailed the two email addresses that I could find on the website last week but have still not received a response. I also tried to call Steven Gifford’s (creator) phone number which he posted on his website, but either got a busy signal or straight to voice mail every time.
Has anyone used this shield? Specifically has anyone used this shield with the Mega? What kind of write speeds did you achieve? What communication protocol were you using? Has anyone used hardware SPI with this shield and the Mega?