I don’t quite get why snipping the data line on the PoE to USB fixed the connection issue. Is it because the USB has “two” data lines?
That is how I read it.
Air Con: $1697 for an on/off switch
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Re: Air Con: $1697 for an on/off switch
#12I don’t quite get why snipping the data line on the PoE to USB fixed the connection issue. Is it because the USB has “two” data lines?
The "PoE"[0] board was also a USB device wired onto the pins for the single USB port on the board. USB is not a multidrop bus - if you directly wire two devices to a single USB port it will not work, you need an active USB hub.
[0]quotes because looking at that FTDI chip though my bet is it's actually serial over Cat5...
Re: Air Con: $1697 for an on/off switch
#13[deleted]
Re: Air Con: $1697 for an on/off switch
#14I don’t quite get why snipping the data line on the PoE to USB fixed the connection issue. Is it because the USB has “two” data lines?
Because USB is not a multi-tap network. It's a point-to-point between host and peripheral, or host and host pretending to be a peripheral (OTG mode).
That USB dongle was bodged on to the USB port D+/D- pins going to the tablet's SOC. If you then connect a PC to that port, you have two hosts (SOC & PC), and one peripheral on the same pair of data lines. No bueno.
I can't believe the bodge job inside that tablet. It looks like the prototype became the final product.
Re: Air Con: $1697 for an on/off switch
#15Well that's getting a bookmark!
We had an Advantage Air system installed last year, and the cheap, low-powered nature of the tablet was immediately obvious. Nice to know it can fairly easily be replaced with any old device or phone as and when it craps out.
Re: Air Con: $1697 for an on/off switch
#16Reaffirming my belief that I want nothing “smart” controlling critical infrastructure in my home. What if it were dead of winter, would he have been able to control the heat?
Re: Air Con: $1697 for an on/off switch
#17This is when smart gets stupid. I'm a bit worried about this with my nest and other smart devices, but even with normal air conditioners there are a few stupid simple problems that will cost you hundreds of dollars!
A couple of weeks ago my AC blower fan stopped working, the compressor would run. I went up and found out that the capacitor was bad, and took a picture of it, buying a replacement. Took about 15 minutes to replace and I probably saved myself at least $400 (no AC is an emergency in the desert, and they will charge you accordingly).
Fixing household appliances can be fun too!
Re: Air Con: $1697 for an on/off switch
#18It's unlikely that the company itself makes these tablets, they probably buy bulk off Alibaba or something and they all probably fail at the same time because the were all made at the same time.
The real problem is that the quoted replacement price is so high, given that we know the tablets themselves are like $30 each.
Re: Air Con: $1697 for an on/off switch
#19> The original ezone tablet had been running Android 6.0, this Samsung was still on 5.0 but I didnt think that would cause any issues so I got started on doing what was clearly missing: The required apps. All ezone apps are available both on the Advantage Air website and the apkpure site. I only learned of the apkpure site from a post claiming he had been directed to it by a AA tech support person.
Redirecting your customers to a third-party/pirate APK redistributor of unknown authenticity... reality defies parody.
Re: Air Con: $1697 for an on/off switch
#20We must have an open-source policy for hardware like this. Billions if not trillions of dollars are being wasted every year because of these shitty companies. I know I am dreaming but maybe in 100 years, humanity will evolve.