When I saw the commercial for this in 2014, my first thought was not another guitar hero game for wannabe guitarist. It wasn't until 2016 that I discovered that this was learning tool that you use with a real guitar. I was curious and I took the plunge.

My 4-wire (Rh,W1,Y1,G) system did not keep the Nest (version 1) battery charged. I charged it with a USB cable to my computer several nights (at 3 am!) in a row only to have the battery voltage (read on the display or on the web site) read below 3.6 volts within a few hours. It needs to be 3.8 or more to work. Measured voltages between red and the other wires were all 27 volts (nominally 24 volts RMS within error of an inexpensive voltmeter), which should be enough. Turning the fan to always ON does not fix this problem. On the Technical Info page of the display the "Voc" value was 33.3 volts. The "oc" in the "Voc" label appears to indicate that the voltage measured is the "open circuit" voltage (a peak-to-peak voltage value), and if you divide it by 1.41 (to get the RMS voltage value) that corresponds to 24 volts, equivalent to that measured at the wires by the voltmeter. The "Vin" voltage number appears to be the voltage across the wires when the unit is connected (i.e., the "closed circuit" voltage). It should also be near 33.3 volts for a 24 volt system to drive the battery charging circuit. Nest does not provide any public document describing these parameters -- except perhaps for expert technicians. My "Vin" value consistently read between 5.7 and 4.1 volts, which is insufficient to run the battery charging circuit of the unit -- or the functions of the unit correctly. So the battery is always drained after recharging. Adding a "C" ("common") wire from the furnace control board (to each zone separately) changes the "Vin" value toward near the 30-volt (peak-to-peak) range where it should be. A Nest-recommended Heating & AC technician did this for a $229 charge for two zoned unit locations. Thus the total cost for the Nest is really approximately doubled if your wiring is incomplete and you really want the Nest device. It is bad form that Nest does not acknowledge this incompatibility of 4-wire systems (unless pressed during several of their hot-line phone calls) but instead sends you to an installation firm. The person on the first support call said that a 4-wire system was compatible. It took me five suppport calls to get a Nest person to be willing to say the word "incompatible" without a change in the wiring to the furnace control board. My consulting fee to Nest has just gone up (doubled to zero)! Other than all of the above, the learning "features" of the Nest may be of interest -- we shall see.

I love this TV!!!! It is easy to set up. The only thing you need to prepare for is the on-screen adjustments versus the standard remote. Nothing to be overly concerned about...just keep messing with it!

Love it.. I have combined it with pure Garcinia Cambogia Extract and even people can tell the weight is shredding off...

If you have read His needs, her Needs and haven't figured out why it isn't working or read 5 love languages and marriage is still a pain, read this book. Your wife needs you to lead and you need her to follow. Supplicating to her is never going to work.

I was very excited to get this machine. I have friends who have older models who love them. Unfortunately so far it's just a rather expensive brick. I tried to update the firmware for the machine as instructed in the setup instructions. The update failed and now my machine won't turn on at all.