Using the raspberry Pi 2 mod B to programming arduino with a usb externally powered hub

Rpi is running from a 2.5A wall adapter but arduino is not running off wall but my usb hub can handle upto 2.5 A at each port cus my arduino powers up fine with usb hub it just wont show up in /dev/tty% also same case with keyboard and mouse.

Please list the make and model of the hub. There may be a problem with it. Do you have another hub to try?

Clem

Yes, please give us Make & Model # of the powered(?) Hub. AND re-check your USB cable connections.It is NOT like a RJ45 Ethernet Router where your connection ports are the same (w/ exception of the WAN RJ45). AAR one USB connection between the Device and (powered?) USB Hub SHOULD be Male Full-size USB-A---connected to -EITHER -Female Full-Size USB-B (on the Hub) OR a small Size micro USB -B (on the Hub)

Another Words, At least One connection to the Hub should be" A-to-B" . Then anything else that you add on (to the Hub) can be "A"

This is the way I did it in Spring 2013, where I connected an old USB 1.0 powered hub to my (2013) RaspPi.

BTW in the original Post that started this Discussion Thread: Q1: where "... i am in dialout group..." was quoted. What is the significance of this? Q2: where "...latest usb drivers usbutils..." was quoted. What is the significance of this?

USCDADNYC (NY NY USA)

Edward Yee wrote:

 

BTW in the original Post that started this Discussion Thread: Q1: where "... i am in dialout group..." was quoted. What is the significance of this? Q2: where "...latest usb drivers usbutils..." was quoted. What is the significance of this?

 

When the device is enumerated (the /dev/tty* device) it's default permissions are rw-rw----, owned by root and the dialout group, so he was just indicating that he had permission to see the device

He was also indicating that he had the latest drivers and utilities to access the usb device.

Both of those statements prevented the questions:

Do you have permission to access the device?

Do you have the latest drivers utilities?

I think he was just trying to head off unnecessary questions.

Mike

AS in his original post wrote:"... 2 HID's 1 USB hub (connected)..." What does "HID's"=?

MC wrote>...

I just connected an Arduino to my pi, directly to one of the usb ports and it showed up as...

ELY Reply>>Is your Arduino Variant an Actual Arduino Uno OR one of the Licensed Variants? AAR doing a Wiki on "Arduino Uno" show a pic of the device, and I see a Full-Size Female USB-B Connector on the Arduino Uno Board. Like I said in earlier posts to this Thread. WRT USB: A-should go to-B. (when NOT using a USB Hub)

Thx MC for your explanation of AS's remarks.

As for my set-up: I have an old RaspPi w/26pin GPIO Header (I think it is a Mod 1 B, circa 2013), awaiting shipment of a Gertduino board, and have a student version of Matlab/Simulink. Matlab says that they only support RaspPI Mod B, but we shall see. AAR $35 is not too much to pay for compatibility.

USCDADNYC (NY NY USA)

A HID is a Human Interface Device, like a keyboard and mouse

Mike

A HID is a Human Interface Device, like a keyboard and mouse

Mike