On Sunday 14 October 2012 07:36:17 Jonathan Schneider wrote:
> You could use something far more suited to this sort of application like a
> small micro and EEPROM. Depends on your specification.
>
> Chances are whatever you do will work inefficient though it might be. (As
> soon as you use a heavyweight OS for something like data collection it's
> already horrendously inefficient but then I started out on eight bit
> micros.)

I tend to agree. Why use a chainsaw to cut better?

It you are designing a system specifically to do a simple monitoring task, I 
would use a small micro (ARM, AVR. PIC etc) and a serial EEPROM.

Where this breaks down is if you need to do networking or support more complex 
interfacing or support other tasks too. In that case, Linux starts to make 
sense. If you already have yaffs to perform other functions then you might as 
well store the rainfall data there too.

-- CHarles