On 6/2/20 6:46 PM, wrote:
On Tuesday, June 2, 2020 at 8:14:49 PM UTC-4, Craig Funston wrote:
On Tuesday, June 2, 2020 at 12:36:57 PM UTC-7, wrote:
On Tuesday, June 2, 2020 at 12:24:51 PM UTC-4, Craig Funston wrote:
On Tuesday, June 2, 2020 at 6:55:25 AM UTC-7, kinsell wrote:
On 6/2/20 6:59 AM, wrote:
I've gotten the "device recognized" bong tone with some charge only cables, but no data transfer.

Windows: The World's best selling virus.


Roger that. In the far past, I've been able to fix a problem like this
by removing the USB drivers and letting the system reinstall. But he's
already tried a different computer, so maybe not the issue here.

One more data point for the Nano4 being picky about USB cables. I've resorted to painting the end of the "special" Nano cable so it doesn't disappear into the sea of seemingly identical cables that accumulate over time.

Craig
JN

So what's different about the "special" cable?
Not sure what's different. I tried the half dozen or so that I had around, found one that worked and marked it. It's possible some of the cables are charge only, but didn't do exhaustive testing.

I know of only 4 kinds of USB cables:
(1) charge and data (4 wires)
(2) charge only (missing the other 2 wires)
(3) OTG - have a fifth wire (inside a micro-USB or USB-C connector), connected to one of the other 4 wires to signal the device, used to connect peripherals to a smartphone with the phone acting as the host
(4) cables that were supposed to be one of the above but are damaged
If there are additional types I'd love to learn.


Not all power lines in USB cables are created equal. You can buy "fast
charge" cables that have lower resistance power lines than others,
useful for rapid charging of high-current devices. Sometimes with,
sometimes without data lines.

https://smile.amazon.com/dp/B01H2W05...detail_2?psc=1


I ran into this when trying to power a Stratux device, it draws lots of
power and the Raspberry Pi is picky about getting enough voltage.

USB started at 100 ma on the power lines, quickly went to 500 ma, and
now has been pushed to multiple amps for some devices. The tiny
connectors and wires have had trouble keep up with the increased current.