Here is the error I get when PP looks for teh Arduino.
2022-01-24 16:20:49.138303 CST (+0:00:04.008069) | ATC: i/o error Traceback (most recent call last):
File "python/hal_zbotatc.py", line 1018, in connect_to_device_thread
self.atc_s_cmd = serial.Serial("/dev/zbot_atc", baudrate=57600, timeout=0)
File "/usr/local/lib/python2.7/dist-packages/serial/serialutil.py", line 236, in __init__
self.open()
File "/usr/local/lib/python2.7/dist-packages/serial/serialposix.py", line 268, in open
raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
SerialException: [Errno 2] could not open port /dev/zbot_atc: [Errno 2] No such file or directory: '/dev/zbot_atc'
[python/hal_zbotatc.py:1255]
2022-01-24 16:20:49.145704 CST (+0:00:00.007401) | ATC: device not found [python/hal_zbotatc.py:1069]
2022-01-24 16:21:03.145798 CST (+0:00:14.673367) | Check ATC USB cabling, or fuses. Switching mill to manual toolchange. Repair problem. To re-enable, click ATC in Settings tab. [tormach_mill_ui.py:8194]
2022-01-24 16:21:03.154095 CST (+0:00:00.008297) | Tool change type changed to Manual [/home/operator/v2.8.3/python/ui_settings_mill.py:136]