usbip works fine

[arnieSkyNet]

Just compiled and installed heyu on a Linux box not physically connected to the heyu controller

On host (physically attached to controller for a USB to serial cable) a pi3+ with working heyu:

sudo apt install usbip
sudo modprobe usbip-core
sudo modprobe usbip-host

start daemon in another tab

sudo usbipd

list usb devices

sudo usbip list -l

in the list you will see bus id's that you use to make the usb device available to remote client eg 1-1.2.1

sudo usbip bind -b 1-1.2.1

then on remote client

sudo apt install usbip
sudo modprobe usbip-core
sudo modprobe vhci-hcd

now list on remote machine via its ip or host what's available to attach too

sudo usbip list -r 192.168.1.1

that will list the remotes usb devices with bus numbers

sudo usbip attach -r 192.168.1.1 -b 1-1.2.1

now do lsusb and see the remote usb device in the local usb device list

heyu info
heyu off A1
heyu on A1
heyu stop

that's it, note remote machines heyu won't work while attached.

now let's undo it all

on remote:

detach via port number, to get this do

sudo usbip port

use that port number in the list to detach probably going to be 00

sudo usbip attach -p 00

check it's detached

sudo usbip port

lsusb will show it's gone

on host

sudo usbip unbind -b 1-1.2.1

goto daemon tab and CTRL C to stop usbipd

make sure heyu running ok

heyu info