[MLB-WIRELESS] Wireless router temp logger?

[David Ashburner]

Ah, of course. I've seen the samples buttons before but it just didn't 
occur to me that they would send them here ( doh, it's just a small 
envelope ).

They have some nice I2c real-time clocks as well :)

Yeah, I have to agree with Andrew, KISS, though much easier sticking 
something on the serial port of the WRT than trying to get hookup wire 
on to some of those GPIO pins.

If you have the AVR connected via serial then you could either put a 
max232 on the WRT and connect it there ( or remove the same from the 
AVR board).  What about the software on the Linux machine? if it's non 
GUI then it should be straightforward porting.

I'm going to do a little TCP to serial ipkg in the next few weeks for 
just this sort of thing. Easier to run apps elsewhere and use the 
router to convert from one world to the other.

Cheers,
dna

On Oct 14, 2006, at 4:56 AM, Paul Jones wrote:

> Currently I've got an AVR microcontroller hooked up to my linux box via
> serial, but the box has to move so I was looking for an alternative.
>
> ps. You can get free sample DS chips from the maxim-ic website
> http://www.maxim-ic.com/parts.cfm/p/DS18B20
>
> Paul.
>
> David Ashburner wrote:
>
>> Hey, where are you guys buying those DS chips?
>> I want some!!
>>
>> If you want to use one wire I compiled up the OWW software a while 
>> ago.
>> Its here:
>>
>> http://www.melbournewireless.org.au/files/wrt54/Packages/
>> oww_0.81.7_mipsel.ipk
>>
>> OWW project http://oww.sourceforge.net/
>> If I remember correctly I didn't build the GUI version the idea bing
>> that you ran the OWW Client on a machine with a display.
>>
>> You know, rather than interfacing a sensor directly to the serial port
>> on the router why not do it through a microcontroller?
>>
>> I use Zilog and Atmel micros and it's a snap to interface to the 
>> serial
>> port on the WRT. You don't need to worry about level shifting as both
>> ends are 3.3V, you can even drive the micro from the WRT power supply.
>>
>>  mm, Z8F6423 gives you a lot of I/O for $12.84
>>
>> On Oct 13, 2006, at 9:23 PM, Andrew Leech wrote:
>>
>>
>>
>>> Is there a particular reason you need to use that chip? A similar
>>> option
>>> would be to use the DS1624 or similar temperature sensor that uses 
>>> i2c
>>> rather than the 1 wire. You can follow these instructions to add i2c 
>>> to
>>> a wrt54g: http://www.byteclub.net/wiki/index.php?title=Wrt54g
>>> I haven't done this personally, but it looks pretty well written.
>>>
>>> This way you wont have to write drivers yourself to get it working, 
>>> and
>>> the temp sensor will probably be able to be read with the standard
>>> linux
>>> lm_sensors stuff, as mentioned on the page.
>>>
>>> Good Luck,
>>> Andrew
>>>
>>> Paul Jones wrote:
>>>
>>>
>>>> Hi all,
>>>>
>>>> I'm trying to find a router + firmware that I can modify to read a
>>>> DS1820 temp sensor via a 1-wire bus. Just wondering if anybody knows
>>>> of
>>>> any links where this has already been done? The only one I have
>>>> managed
>>>> to find is this: http://owfs.sourceforge.net/WRT54G.html
>>>>
>>>> Cheers,
>>>> Paul.
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>>>>
>>>>
>>>>
>>>>
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>>
>>
>>
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