[Nut-upsdev] Tripp-Lite SMART1500LCDT

Marco Walther marco at sonic.net
Fri Aug 5 22:03:43 UTC 2016

On 08/05/2016 01:36 PM, Stuart D. Gathman wrote:
> On Fri, 5 Aug 2016, Marco Walther wrote:
>> On 08/03/2016 05:25 AM, Stuart Gathman wrote:
>>>  I've made some progress getting this Tripplite to work:
>>>  http://gathman.org/2016/07/30/Standard_Schmandard/
>>>  Basically, plug it into a USB hub that actually implements USB2.0, 
>>> then
>>>  power cycle the port when it hangs.  It does seem to be a hardware
>>>  problem with the USB controller.
>> Finally an idea;-) I had the same problem for a couple of years but 
>> since I use a [1st gen] appleTV as the server, I thought it might be 
>> it's USB port.
>> I bought a `plugable USB2-HUB-AG7' and experimented a bit. So far, I 
>> did not get it to turn the power to devices completely off:-( But the 
>> unbind/bind seems affect the devices somehow. I tried it with a 
>> little Sparkfun RedBoard (Arduino clone) and when I [re]bind, the 
>> RX/TX LEDs flash shortly, so it seems to reinitialize it's USB-Serial 
>> chip. Maybe that's enough?
>> The same TX/RX LED flashing happens with the hub-ctrl power off->on;-)
>> OK, the USB hub is now installed between the aTV & USP ;-) Let's see 
>> what happens next.
> I also bought a USB2-HUB-AG7, but the new black version (of the *same*
> model# - arrrrgggghhhh) no longer implements PPPS.  Only the old silver
> version does.  What is the point of a model# if you can't count on the
> functionality?
Mine even says v1 on the type sticker:-( but it's black as well. So I'll 
see how things behave once I loose the UPS connection and do a `hub-ctrl 
power off->on'. I'm not really interested in the power off, just in the 

If that does not work, I'll probably try a Arduino-based power-switch 
cable. Since it now looks like it's really the UPS, I can actually think 
about different ways.


-- Marco

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