Hi All,

I've got two Identical Dance Mats that use a different symbol for the 'left' button. On one dance mat [HID] classes the left control as key_btn 2 and on the other dance mat the left control is classes as key_btn 0. I want both the left hand controls to be the same key_btn message number.

Is there any way to do this? I've looked up each device ProductID and VendorID hex codes in [HID] but both come up identical (hence the same manufacturer dance mat).

So does each dance or /HID device have a kind of MAC address that is unique that that device that I can access, so Pd knows which exact device is plugged into it so I can 're-map' the left control to a constant message tag?

I'm on Ubuntu 16.94

Any help would b great

Thanks
Casper

When running dmesg from the terminal to print out the kernal buffer it reads

.271124] usb 7-1: new low-speed USB device number 3 using uhci_hcd
[21052.428183] usb 7-1: New USB device found, idVendor=0079, idProduct=0011
[21052.428191] usb 7-1: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[21052.428196] usb 7-1: Product: USB Gamepad
[21052.454234] input: USB Gamepad as /devices/pci0000:00/0000:00:1d.1/usb7/7-1/7-1:1.0/0003:0079:0011.0006/input/input23
[21052.505271] dragonrise 0003:0079:0011.0006: input,hidraw1: USB HID v1.10 Joystick [USB Gamepad ] on usb-0000:00:1d.1-1/input0
[21057.059115] usb 6-1: new low-speed USB device number 5 using uhci_hcd
[21057.216253] usb 6-1: New USB device found,****** idVendor=0079, idProduct=0011******
[21057.216260] usb 6-1: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[21057.216265] usb 6-1: Product: USB Gamepad
[21057.242315] input: USB Gamepad as /devices/pci0000:00/0000:00:1d.0/usb6/6-1/6-1:1.0/0003:0079:0011.0007/input/input24
[21057.242781] dragonrise 0003:0079:0011.0007: input,hidraw2: USB HID v1.10 Joystick [USB Gamepad ] on usb-0000:00:1d.0-1/input0

So both devices contain the same idVendor=0079, idProduct=0011 tags that [hid] can find. Is there a way to differentiate between to two devices by another serial number so I can create seperate mappings for them in Pd?

@casper https://superuser.com/questions/360336/differentiate-between-identical-usb-devices-on-linux .. ending the two lines of the Udev rule with "SYMLINK+="ttyUSBport7" and "SYMLINK+="ttyUSBport6".
Linux will then always know which is which.... if you always plug them each into the same ports.
You should then be able to always connect to the same mats with [open 7( and [open 6] messages to two [hid] s.
But I don't use Linux much, so I could be spouting rubbish.
David.