I just picked up my first Arduino Mega 2560 the other day. Hooked it up to my Mac Pro and made my first sketch - basically a blinking pattern with the onboard pin 13 LED (tinkered with the simple Blink example a bit). Today, I go to tinker with it some more, and the long list of serial ports is gon…

Does the board show up in System Profilier when the board is attached (and no other hardware was attached)?

I don't think so. But, I am not sure where to look? It does not show in USB (shows kbd/mouse/flashdrive) or Modems (empty). I also don't see anything in system.log or error_log when I plug in the board or remove it. The board powers normally and runs the current sketch (now modified to use a togg…

A_Gamer: I don't think so. But, I am not sure where to look? Apple Menu -> About This Mac -> "More Info..." -> USB A_Gamer: (now modified to use a toggle switch to change the blink frequency via my wife's Vista laptop). Was this toggle switch wired before you started having problems? How is…

Nope. Not there. Tried several ports. [quote author=James C4S link=topic=71577.msg534639#msg534639 date=1315353034] A_Gamer: (now modified to use a toggle switch to change the blink frequency via my wife's Vista laptop). Was this toggle switch wired before you started having problems? How is …

I've had the same problem I have understood that the source of the problem is that if something is plugged in 5v arduino pin, the device isn't be recognized so.. unplug all from arduino and reconnect it. cu.usbmodem*** will reappear

mattiie: I've had the same problem I have understood that the source of the problem is that if something is plugged in 5v arduino pin, the device isn't be recognized so.. No, not quite true. This would only make sense if 1) that device is providing 5V and causing an issue with the Vusb supply. …

I had the same problem and plugged the power cord directly onto the board, and immediately the board light was on again and the device shown up in the device list. I didn't have such problem before with mac os 10.8 so I don't know whether it's linked with the mac os 10.9 upgrade or only with the fa…

A couple things to add to this thread since it was recently bumped: since I don't often use other USB devices I didn't realize at the time that the ports were completely shut down - not only was the Arduino not showing up, but nor did any other device (flash drive, etc) - whatever happened really…

The USB controller used by Apple monitors current draw. Switching back and forward probably caused an in-rush event which caused OSX to shutdown the ports. Normally you'll get a dialog box letting you know this has happened. As you saw, a power cycle is required, not just a reboot.

Hello All, I came here with this error, and would like to share my easy solution. Turn Off Bluetooth. Thank you, Madalyn

Mac OS X usbmodem ports missing?

Development Tools IDE 1.x

mmerkey September 29, 2017, 11:36pm 11

Hello All,

I came here with this error, and would like to share my easy solution.

Turn Off Bluetooth.

Thank you,
Madalyn

Can't get my boards connected

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Mac OS X usbmodem ports missing?

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