Nest 2 Teardown
I had an opportunity to teardown the Nest 2 Thermostat – it is even more beautiful inside then the outside. It packs an amazing amount of technology, here is a list of major components I found as a part of the teardown:
1. System On a Chip (SOC): The Nest 2 is powered by the Texas Instruments AM3703CUS SOC. It belongs to the Sitara family of MPUs. You can read about it here.
2. One major change I discovered was that the Nest 2 has moved away from the Texas Instruments Zigbee chip the 2530 and is using the Ember (Silicon Labs now) EM357 for its yet to be shown of Zigbee functionality. You can find about the EM357 here.
3. There is a chip from Skyworks – the Sky65384 that I could not locate on their website.
4. The WiFi implementation is a module from Murata – the logo is definitely Murata – and when you do a Google Search for “murata sl s235” – the first hit is the SL modules on the Murata page, and it mentions that the SL modules are based on the TI WL1270 Chip. It would be interesting to know if it uses the newer version of the 1270 – the 1271 – which would have a Bluetooth radio integrated as well.