hi everyone, how are you?
I’m experiencing annoying pauses in printing on my K1 Max. Analyzing the Klipper log, I’m seeing these reported problems: But there’s one thing I think might be the filament sensor, because when I remove its mention in box.cfg, the problem in the log stops.
[INFO] 2025-11-03 15:57:46,461 [root] [reactor:invoke:48] serial_485_wrapper_connect_send_data_break_reconnect: params = {‘#msgid’: 7, ‘#msg’: b’\xf7\x01\x07\x00\n\x1f5\x00\x02T’, ‘#name’: ‘#unknown’},cmd = 10,data=b’\x01\x03\xff\n’, timeout = 3600,is_connected = True, serial_read_eof = False
[INFO] 2025-11-03 15:57:50,289 [root] [auto_addr_wrapper:send_package:436] Waiting for response, retry = 0,cmd = 161,data=b’\xfe\x05\x00\xa1\xfe\xfe’, timeout = 1.0,is_connected = True, serial_read_eof = False
[INFO] 2025-11-03 15:57:51,140 [root] [reactor:invoke:48] Waiting for response, retry = 0,cmd = 10,data=b’\x01\x03\xff\n’, timeout = 3600,is_connected = True, serial_read_eof = False
[INFO] 2025-11-03 15:57:51,294 [root] [reactor:_check_timers:158] cmd[0xfe 0x5 0x0 0xa1 0xfe 0xfe] get response or timeout
[INFO] 2025-11-03 15:57:51,299 [root] [auto_addr_wrapper:send_package:436] serial_485_wrapper_connect_send_data_break_reconnect: params = None,cmd = 161,data=b’\xfe\x05\x00\xa1\xfe\xfe’, timeout = 1.0,is_connected = True, serial_read_eof = False
[WARNING] 2025-11-03 15:57:51,300 [root] [auto_addr_wrapper:send_package:436] cmd_485_send_data_with_response timeout, cmd = 161,data=b’\xfe\x05\x00\xa1\xfe\xfe’ timeout = 1.0,is_connected = True, serial_read_eof = False
[INFO] 2025-11-03 15:57:51,308 [root] [auto_addr_wrapper:send_package:436] Waiting for response, retry = 0,cmd = 162,data=b’\x01\x03\x00\xa2’, timeout = 0.1,is_connected = True, serial_read_eof = False
[INFO] 2025-11-03 15:57:51,322 [root] [reactor:_check_timers:158] cmd[0x1 0x3 0xff 0xa] get response or timeout
[INFO] 2025-11-03 15:57:51,325 [root] [reactor:invoke:48] serial_485_wrapper_connect_send_data_break_reconnect: params = {‘#msgid’: 7, ‘#msg’: b’\xf7\x01\x07\x00\n\x1f5\x00\x02T’, ‘#name’: ‘#unknown’},cmd = 10,data=b’\x01\x03\xff\n’, timeout = 3600,is_connected = True, serial_read_eof = False
[INFO] 2025-11-03 15:57:51,424 [root] [reactor:_check_timers:158] cmd[0x1 0x3 0x0 0xa2] get response or timeout
[INFO] 2025-11-03 15:57:51,426 [root] [auto_addr_wrapper:send_package:436] serial_485_wrapper_connect_send_data_break_reconnect: params = {‘#msgid’: 17, ‘#msg’: b’\xf7\x01\x11\x00\xa2\x01\x00D\x93;M\x14T\xb0\x11G454\x8f’, ‘#name’: ‘#unknown’},cmd = 162,data=b’\x01\x03\x00\xa2’, timeout = 0.1,is_connected = True, serial_read_eof = False
Another issue is that the printer is having problems with the filament detection sensor on the new extruder (CFS). When the print finishes, it cuts the filament, the CFS pulls the filament, but the filament sensor continues to indicate that there is filament loaded. It’s not a cleaning problem, because I’ve already done that and it doesn’t solve it. This always happens when I have long prints (1 hour+). My impression is that this has to do with heat and the fact that the sensor is supported by a thin piece of metal to detect the filament; when the chamber heats up, it loses its properties. Everything leads me to believe it might be a problem with the extruder.
Any ideas?