Hi,
Not sure if anyone else has done this but, I am looking for a way to record temperature data in real time (say every 20 minutes) and have it saved automatically to my computer. I am hoping to do this wirelessly as my application requires the recording of skin temperatures overnight, which I can analyze later for a possible trend.
Any thoughts on how I can do this?
Did you read the paper on skin temperature and SWS?
Dallas DS18B20 are small, sensitive and accurate. You can attach many of them to the same 2 wire bus and read each sensor individually. There is a OneWire library and a Dallas Temperature library that makes using them easy. The Arduino could store the readings in its eeprom, then you could later attach to the pc and download them over usb.
Paul
vishvekb:
and have it saved automatically to my computer. I am hoping to do this wirelessly as my application requires the recording of skin temperatures overnight
The DS18B20 mentioned above are a cheap and obvious choice. Assuming the transmission distance is just a few metres, bluetooth is dead simple to use and entirely adequate. All the recording can be done at the computer end. This can be done using a terminal programme like RealTerm or fed direct to Excel with PLX-DAQ whereby a multi-channel graph may be on screen awaiting you when you wake up.
How accurate do your measurements need to be?
The DS18B20 mentioned above is accurate to +/- 0.5 degrees C, with readout precision of 0.06 degrees C in 12-bit mode.