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Unread 20-09-2012, 15:42
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Re: Temperature data logging

Hugh,

My samples rate I guess would only need to be once per hour per sensor so VERY slow rate.

What kind of device are you using for the actual measurement? Do you use the processor for taking the info and sending to a webpage/email to notify you of issues?

I am a little inexperienced in programming new items other than the c-Rio, old IFI controller and the old basic stamp/basic controllers. And just getting into using new types of sensors and serial interfaces. I would really like to use the sensor Gdeaver mentioned the Maxim DS18B20 which if I am reading right uses a serial bus so I can connect more than 1 to one port of a micro controller. Similar to how the Jaguar can connect with CAN. The Logomatic seems to be able to do all the logging exactly what I need but I am somewhat unsure if I will still need another micro controller like the aruindo or your processor to read the ports or if I can just use the multiplexer tied right to the Logomatic.


Quote:
Originally Posted by Hugh Meyer View Post
Mike,

What is your sample rate going to be?

This device is a good way to log to a SD card. It has several types of inputs. I have used it successfully for several years now to monitor water levels in a sump pump pit.

https://www.sparkfun.com/products/10216

This is a nice processor board that I use in the same system.

https://www.olimex.com/Products/PIC/.../PIC-MAXI-WEB/

Sounds like a fun project.

-Hugh