ZBasic Forum

If you have a need to log serious amounts of data you might want to check out this 1GByte logger at:

http://www.sparkfun.com/commerce/produc ... cts_id=752

This $60 puppy is just coming on-line and can write to any size SD card and they are already testing the 2GByte card. You supply the SD card.

For the record, I have no financial interest in or connection to Sparkfun, I am just a satisfied customer.

HTH

Vic

"Out of Stock" , No Specifications, No firmware/software examples/docs, No FAT?, 2x the cost of competing high level SD boards ... "The devil is in the details"

Sorry you didn't take the time to read the description. The Logomatic is a serial data LOGGER system not an SD card. This is a new product annoucment as the copy says.

The Logomatic has the ability to record . . . any serial data! Now you can record for weeks with any size SD card up to 1gig (we are still testing the 2gig cards).

I seriously doubt that you can find a serial data logger sans SD card for less.

Shooting from the hip should be confined to gun-fighters

Vic

"They don't call me John Wayne Andy for nothing"

First of all - This serial data logger is a high level SD card interface with
a microprocessor attached to it and the micro serializes the data via TTL/RS232 to the SD card. Its is the same as any high level SD card interface with additional logging commands. There are many SD cards interfaces that can do this logging, with the help off a microcontroller like
ZBasic ZX-xx series. Check my link out on SD card/interfaces and you will see there are numerous SD cards for far less than $60.
As for no documentation/specifications, no firmware/hardware examples
buying something "unknown" is a waste of money.

zbasicandy: Are there any cheaper ones that you can recommend? I'm after something small and on a single board. I could roll out my own PCB, or just use my Gameboy Micro and CF card, or even my HP200LX, but I want something that will log heaps of serial data straight to a SD or MMC card...

Some more info would help to determine your possible options.
Do you need / want a DOS compatible FAT file structure? Having one allows your MMC/SD card to be read by a PC. If you are simply storing data bytes, to be read back and uploaded via the micro, than a FAT may be overkill.
Do you need to have several "files" open on the card simultaneously?
Can you format your data into 512 byte blocks, or do you need the ability to write a few bytes at a time? (All MMCs actually write in 512 byte increments, although various buffering schemes are available to make this invisible to the user).
What speed do you need, ie how many bytes/sec do you wish to store or retrieve?
In SPI mode, one can read/write to an MMC card using a four signal interface, (Chip select, Clock, Data In, Data Out). This is much easier than a CF card, and can be driven directly by the ZX-24.
JC

Futaris
Please read the serial mass storage information under files.
ZBasicAndy gave all the needed information for users to make the right SD mass storage decision.

Since documentation, support, etc. was a concern, also check out the uAlfat or USBWiz from GHI Electronics. They cost less and are easy to use with a ZX (anything for that matter).