Part 1 is here <link>, part 2 is here <link>
I've been asked several times now how I mounted the temperature sensor to the XBee, and I didn't explain very well because I was too lazy to take a picture. See, once I put it in a Stevenson Screen and mounted it on a fence post, it isn't as easy to get to as a lazy person like me would like.
Well, I got asked again and decided to bite the bullet and go open it up for a picture:
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Simple huh? One end of the sensor is hooked to 5V from the wall wart, the other end is to ground and the sensor output is connected to two 10K resistors in series to ground. I take the center of the the two resistors to an XBee analog pin for transmission to my House Controller. Notice the sophisticated nylon tie to mount the XBee? Remember, this is all inside an open air enclosure that is screened on the inside to keep the darn birds from building nests inside. It also keeps out rodents and bats (yes, I know bats are rodents).
The board is an XBee breakout board that has a 3.3V regulator on it to power the XBee, so I have access to both 5V and 3V to power whatever I need. I've mentioned the wall wart several times on this blog, so look around a bit if you're curious.
There, now I can just point to a picture when people ask how I did it.
I've been asked several times now how I mounted the temperature sensor to the XBee, and I didn't explain very well because I was too lazy to take a picture. See, once I put it in a Stevenson Screen and mounted it on a fence post, it isn't as easy to get to as a lazy person like me would like.
Well, I got asked again and decided to bite the bullet and go open it up for a picture:
The board is an XBee breakout board that has a 3.3V regulator on it to power the XBee, so I have access to both 5V and 3V to power whatever I need. I've mentioned the wall wart several times on this blog, so look around a bit if you're curious.
There, now I can just point to a picture when people ask how I did it.