Hello,
I'm working on a stand-alone, battery-powered temperature monitoring device which collects a few megabytes of data over the course of a few weeks. The goal is to monitor the temperature of bearings and a clutch box of a heavy machine under varying loads, and evaluate these measurements afterwards. Most of this is a trival design matter, and I got almost everything running just fine within a few days. The only problem I'm still facing is data storage: I'd like to use an SD card (or Micro SD) to store this data, so that the user can transfer the data to a PC with minimal hassle.
My questions:
- It would appear that I need a license from the SD Card Association if I want to build (and sell) anything containing an SD card host circuit (see
- Does anyone have any information on how to write data to SD cards using a PIC controller?
Any suggestions for a different data storage and retrieval mechanism are welcome too, of course, but I can't think of anything as easy to use as an SD card. Also, I'd rather not use a USB device, because the whole shazzam now runs off a 3V power source, whereas USB requires 5 volts.
Thanks in advance for any suggestions, best regards,
Richard Rasker