REFLECTOR: GRT HXr USB expansion

[lawrence]

Still not sure why you are running out of ports. 
I have the exact same configuration with the HXr. I am using the GRT autopilot, but it still connects via serial port. 

> On Feb 11, 2014, at 9:13 PM, Don Johnston <numa at comcast.net> wrote:
> 
> EIS
> Com1
> Com2
> Nav1
> GPS
> Transponder
> Audio Panel
> AHRS1
> AHRS2
> AP
> VPX
> 
> 
>> On Tue, Feb 11, 2014 at 4:09 PM, Glenn Babcock <glennbabcock at roadrunner.com> wrote:
>> Hi Don,
>> 
>> I have a GRT HXr and an Android tablet connected via Bluetooth.  Here a picture of my panel on the GRT forum:  http://www.grtavionics.com/forum/viewtopic.php?f=19&t=189
>> 
>> Despite having lots of toys connected I’m doing fine with 8 ports on a single display:
>> 
>> 1. IFR GPS (GX60)
>> 2. AHRS
>> 3. SL30 (remote COM)
>> 4. EIS
>> 5. VFR GPS
>> 6. TT22 (ADS-B out)
>> 7. GRT AP
>> 8. none
>> 
>> My USB connections are:
>> 
>> Port 1: USB data stick
>> Port 2: USB Hub
>> 	Hub 1: Sky Radar (ADS-B In)
>> 	Hub 2: Bluetooth (tablet network)
>> 	Hub 3: none
>> 
>> The only thing I don’t have is the WAAS GPS, but that will replace the GX60.  Even if I had a second AHRS I would have enough ports.
>> 
>> So I’m curious, what do you need 11 ports for?
>> 
>> Regards,
>> Glenn
>> 
>> 
>> Regards,
>> Glenn
>> 
>> 
>>> On Feb 11, 2014, at 1:29 PM, Don Johnston <numa at comcast.net> wrote:
>>> 
>>> Not exactly...
>>> 
>>> Here's what I posted:
>>> 
>>>> Update...
>>>> 
>>>> I was just told by GRT that the USB ports on the HXr are not programmed to receive the type of signals from the avionics.
>>>> 
>>>> They are setup for uploading the EFIS software, downloading flight data and communicating with either XM weather or ADS-B devices.
>>> 
>>> The bottom line (at least as far as the reason the thread got started) was that I had about 11 devices that required serial ports. None of these devices were weather or ADS (or radar). Which meant there was no workaround for the requirement of a second EFIS screen to get additional serial ports. 
>>> 
>>> Respectfully,
>>> Don
>>> 
>>> 
>>> 
>>>> On Tue, Feb 11, 2014 at 12:14 PM, Lawrence Epstein <ljepstein at hotmail.com> wrote:
>>>> Last week, the discussion over what the USB ports ended with a post that Carlos @ GRT said the USB was not available for expansion or anything but software upload and data download.
>>>> Carlos is the expert, but I think he was mis-understood.
>>>> 
>>>> Here is the USB section of the HXr installation manual:
>>>> 
>>>> "USB
>>>> The preferred method of data transmission for newer devices is USB. Just like the USB port on your
>>>> computer, an EFIS USB port is easy to connect and transmits large amounts of data quickly. USB
>>>> devices do not require you to program a baud rate. The HXr has two USB ports that may be used
>>>> for two USB devices, or you may attach a USB hub to run up to three devices. Some ADS-B units,
>>>> such as the Radenna Skyradar, offer USB data transmission. Software updates are also delivered
>>>> to the EFIS via USB– simply install the software update files onto a USB thumb drive from the GRT
>>>> website, then install the thumb drive to the EFIS USB port. The EFIS will upload the files when you
>>>> follow the Update instructions in the system Setup Guide. Most people choose to leave a USB
>>>> extension cable plugged into the USB port for easy software updating. Flight and engine data may
>>>> be recorded to a USB thumb drive as a “demo file” for later examination– a useful feature for
>>>> collecting flight test data."
>>>> 
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