Art,
All USB Micro cables are not created equal. ?It looks as if you are using one that was designed for charging a cell phone or something. ?They only have the 5volt and ground connections hooked up in the cable and will not work. ?I have about 50 of them here that are useless for anything but charging a cell phone or something else charged from a USB port.'
Make sure you have a full data USB micro (not Mini) cable with all connections in place. ?If Windows doesn't recognize it and set it up as soon as you plug it in, then it's not getting data from the computer.
Another possibility is if you are using an external USB hub you may be using a "Charging" port on that hub. ?No data connections to most of those either.
Jim
------ Original Message ------
Sent: 1/21/2019 4:21:51 PM
Subject: Re: [JackAl] Arduino IDE version 1.8.8 issues
JimThanks for the detailed reply. I am at a point of trying to load a sketch via IDE and the teensy loader with no luck. I was loading the blink program. There doesn¡¯t seem to be a port opened using win10 so the upload fails. I have tried a couple of usb/mini usb cables again no luck. The usb cable is providing power as the on board led blinks.?
Thoughts
Art
On Jan 21, 2019, at 5:06 PM, Jim Sheldon <
w0eb@...> wrote:
Art,
I didn't see a definitive answer yet and I know Jack is super busy trying to sort out everyone's problems so I'll answer your question.? The pad in question is shown on the back side of the Teensy 3.6 (and other Teensy's as well) pinout card that came with it, as the VIN/VUSB jumper and it says to cut that jumper if using a battery charger OR external power.? The battery charger isn't relevant here, but external power is so the jumper MUST be cut.
Now for the reason which isn't readily apparent.
You are powering the Teensy 3.6 from the 5 volt regulator on the JackAl board.? If you have not cut the jumper and plug the USB cable in to re-program the Teensy (or for some other purpose like CAT control or other serial I/O from the USB port) you are also supplying a nominal 5 volts from the USB port to the Teensy.? The two voltages will most certainly not be exactly equal as they come from two different power sources and they WILL conflict with possible damage to the Teensy's on-board 3.3V regulator and other circuitry (I know, I destroyed one by doing this before I figured it out).
So, in this case if you don't cut the jumper, don't connect the USB cable with the JackAl powered up.? By the same token, if you follow PJRC's directions and cut the jumper, you will have to power the JackAl up to get the Teensy operating before you will be able to re-program it.?
If, like me, you sometimes forget these things then cut the jumper (recommended anyway) and just remember that you have to have the JackAl powered up to use the USB connection to program the Teensy 3.6 (or to communicate with it for any reason).
Jim Sheldon - W0EB
___________________________________________________________________________________________________
(Art Olson)
Jack
I vaguely recall some discussion about cutting the 5 volt pad on the teensy. Is this still necessary or am I off target.?
?
Art N2AJO
