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January 11, 2011
News - SparkFun and the Future o…
about a year ago
There is an Arduino Yun compatible board on Kickstarter right now.
This is yet another angle, it is backed by some of the core OpenWRT developers so it gets excellent support in OpenWRT. It has full CE/FCC/IC certification and it is designed by qualified RF engineers. So who gets to do the Yun? one of the Arduino groups or the OpenWRT people?
Personally I’m going with the Domino since it is way harder to get the 802.11 stuff right than the Arduino side.
News - Teardown: Nest Protect
about 2 years ago
Third CPU is the EM357. It is a Cortex-M3 and capable of running user code too.
Light sensor is for the optical smoke detector?
Why do you need three CPUs? K60 has Ethernet and they never used it.
What does a Figaro TGS-5342 cost? Nobody has them for sale.
Tutorial - Nest Teardown
about 4 years ago
Like to know about antenna too
Also curious about how temp is measured. It is possible to do it with the PIR. Is that what they are doing? Or is there a thermistor in there somewhere?
Google on thermostat power stealing.
Thermostats have three to six relays in them for switching the 24VAC circuits from the HVAC equipment. I don’t see any relays in the photo. So they must be using something solid state like a TRIAC to do the switching. What are they using?
What switches the HVAC circuits? FET or Triac?
News - Home Heating From Afar
about 4 years ago
So what is inside? CPU, wifi chip, flash, ram? More photos?
No public wish lists :(
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