SN10 USB connection

On Apr 13, 3:12*pm, Eric Greenwell wrote:
T8 wrote:
On Apr 13, 2:02 pm, Dave *wrote:

(1) Winscore, or any scoring program, could care less what
kind of media used for the files. The scorer may however
complain if you show up with 5.25" floppy disks.

Winscore doesn't care. *However the operating system does take a while
longer to recognize a USB drive. *Experience shows that SD cards beat
any other option in the scoring shack by a country mile.

-T8

What are scorers using for the OS - Win 98? Me? My XP computers find and
display a USB drive in 5-6 seconds vs 4-5 seconds for an SD card, not
enough time to go that country mile, even with 50 entrants. Does the
problem come from having 50 different USB drives, instead just 5 or 6
different ones?

--
Eric Greenwell - Washington State, USA (netto to net to email me)

I also had trouble seeing a significant delay, and I was running
Windows 2000 under VMWare Fusion on a MacBook Pro (so some additional
overhead for device I/O though the virtualization software). There was
no noticeable difference in device detection speeds.

The internal operation of just about every internal SD card reader is
actually a USB interface, same with ExpressCard SD card readers.
PCMCIA is a bit different, but I'm surprised there would be a big
overhead just for USB device discovery. Is something strange going on
with autoplay?

I assume Dave's earlier comment about power consumption of USB to SD
card adapters referred to some of the larger desktop style ones, the
typical small SD to USB small adapters like my SanDisk MicroMate or
SimpleTech Bonzai draw very low currents. I don't have my USB breakout
cable handy or I'd measure the currents but I know it is low.

Darryl

On Apr 13, 7:40*pm, Darryl Ramm wrote:
I assume Dave's earlier comment about power consumption of USB to SD
card adapters referred to some of the larger desktop style ones, the
typical small SD to USB small adapters like my SanDisk MicroMate or
SimpleTech Bonzai draw very low currents. I don't have my USB breakout
cable handy or I'd measure the currents but I know it is low.

Darryl

I have a small converter that looks like a normal USB memory
stick, with a tiny slot in the end for a uSD card (I use this for
turning in FLARM log files). The combo (adapter plus uSD card)
draws 100ma, which is the max our adapter sources.

What it needs all that power for I have no idea...
Your mileage may vary !

Best Regards, Dave

PS: In windows device manager, switch to connection view,
and you can see the USB current for each connected device.
No need for breakout cables...

On Apr 13, 5:21*pm, Dave Nadler wrote:
On Apr 13, 7:40*pm, Darryl Ramm wrote:

I assume Dave's earlier comment about power consumption of USB to SD
card adapters referred to some of the larger desktop style ones, the
typical small SD to USB small adapters like my SanDisk MicroMate or
SimpleTech Bonzai draw very low currents. I don't have my USB breakout
cable handy or I'd measure the currents but I know it is low.

Darryl

I have a small converter that looks like a normal USB memory
stick, with a tiny slot in the end for a uSD card (I use this for
turning in FLARM log files). The combo (adapter plus uSD card)
draws 100ma, which is the max our adapter sources.

What it needs all that power for I have no idea...
Your mileage may vary !

Best Regards, Dave

PS: In windows device manager, switch to connection view,
and you can see the USB current for each connected device.
No need for breakout cables...

You don't need to be in connection view do you?

Anyhow this does not work in a virtual machine like I am running. My
God, people still run Windows on native hardware? I keep mine locked
tightly is a safe container on the shelf and only open it when needed.

Darryl

On Apr 13, 8:49*pm, Darryl Ramm wrote:
I have a small converter that looks like a normal USB memory
stick, with a tiny slot in the end for a uSD card (I use this for
turning in FLARM log files). The combo (adapter plus uSD card)
draws 100ma, which is the max our adapter sources.

What it needs all that power for I have no idea...
Your mileage may vary !

Best Regards, Dave

PS: In windows device manager, switch to connection view,
and you can see the USB current for each connected device.
No need for breakout cables...

You don't need to be in connection view do you?

Its the easiest way to find the hub controlling your device,
which is where you need to look at the power.

Anyhow this does not work in a virtual machine like I am running. My
God, people still run Windows on native hardware? I keep mine locked
tightly is a safe container on the shelf and only open it when needed.

Depending on *which* virtualization scheme you are using
and its USB support, it may work. USB doesn't work in free
VirtualBox for example...

Darryl

Dave Nadler wrote:
On Apr 13, 7:40 pm, Darryl wrote:

I assume Dave's earlier comment about power consumption of USB to SD
card adapters referred to some of the larger desktop style ones, the
typical small SD to USB small adapters like my SanDisk MicroMate or
SimpleTech Bonzai draw very low currents. I don't have my USB breakout
cable handy or I'd measure the currents but I know it is low.

Darryl

I have a small converter that looks like a normal USB memory
stick, with a tiny slot in the end for a uSD card (I use this for
turning in FLARM log files). The combo (adapter plus uSD card)
draws 100ma, which is the max our adapter sources.

What it needs all that power for I have no idea...
Your mileage may vary !

Best Regards, Dave

PS: In windows device manager, switch to connection view,
and you can see the USB current for each connected device.
No need for breakout cables...

I opened Device Manager, located my USB memory stick in the USB
controller list, opened Properties, but don't see power or current
listed in any of the tabs. The Generic hub did have a Power tab, but it
showed the requirement for the attached device (auxiliary display), not
actual current. Can you be more specific on which USB to look at, and
where in the Properties?

--
Eric Greenwell - Washington State, USA (netto to net to email me)

- "Transponders in Sailplanes - Feb/2010" also ADS-B, PCAS, Flarm http://tinyurl.com/yb3xywl

On Apr 13, 11:03*pm, Eric Greenwell wrote:
Dave Nadler wrote:
On Apr 13, 7:40 pm, Darryl *wrote:

I assume Dave's earlier comment about power consumption of USB to SD
card adapters referred to some of the larger desktop style ones, the
typical small SD to USB small adapters like my SanDisk MicroMate or
SimpleTech Bonzai draw very low currents. I don't have my USB breakout
cable handy or I'd measure the currents but I know it is low.

Darryl

I have a small converter that looks like a normal USB memory
stick, with a tiny slot in the end for a uSD card (I use this for
turning in FLARM log files). The combo (adapter plus uSD card)
draws *100ma, which is the max our adapter sources.

What it needs all that power for I have no idea...
Your mileage may vary !

Best Regards, Dave

PS: In windows device manager, switch to connection view,
and you can see the USB current for each connected device.
No need for breakout cables...

I opened Device Manager, located my USB memory stick in the USB
controller list, opened Properties, but don't see power or current
listed in any of the tabs. The Generic hub did have a Power tab, but it
showed the requirement for the attached device (auxiliary display), not
actual current. Can you be more specific on which USB to look at, and
where in the Properties?

--
Eric Greenwell - Washington State, USA (netto to net to email me)

- "Transponders in Sailplanes - Feb/2010" also ADS-B, PCAS, Flarmhttp://tinyurl.com/yb3xywl

Start with "View by Connection".
Locate the USB hub controlling your device.
Look at properties, power tab...

This shows the max current negotiated (max to be provided
by USB host), not the instantaneous actual current.

Hope that helps,
Best Regards, Dave