sorry for my late reply, lately i change my cable route. i take it away from motor cable and fan. but i did not changing the cable. this morning i got random change tool once again.
this night i already changed the cable. hope this problem really dissapeared
i will update it after several days
@Phaedrux the problem still show up. at lately it more often. i have change the cable to STP lan cable used 4 cable only. i also make it shorter the cable is 50cm long only, before is 1.5m a weeks ago my problem is not occurs often. very rare but sometimes happened but this week it show more often.
is there any trigger event that when it change from active to standby i can forced it back to active?
any way to do it?
@dc42 any help about this. i have disperate to solve it with cabling 
@wilriker
tested without paneldue and print ok in several print part and in 5-6days trial
connect the paneldue again and it random change tool again
i used blv project for the printer. and looks like the led cable is cross with paneldue cable event i already used shielded cable and ferit.
now i forced to select tool 0 and cannot change to another
next try is separate and reroute the cable of the led at the front cover. and get messsage if the system change the tool accidently.
@wilriker
tested without paneldue and print ok in several print part and in 5-6days trial
connect the paneldue again and it random change tool again
i used blv project for the printer. and looks like the led cable is cross with paneldue cable event i already used shielded cable and ferit.
now i forced to select tool 0 and cannot change to another
next try is separate and reroute the cable of the led at the front cover. and get messsage if the system change the tool accidently.
@wilriker said in error:attempting to extrude with no tool selected while printing:
put differ
oops sorry.. i got your poin now. so the first try i must do is disactivate the paneldue and print without paneldue and check if this problem still happen or not. will try in a week of printing. will update as soon as got the problem occurs
the last step i forcely select the tool again when tfree macro called.
but i know it is not solving problem. it is just for emergency.
also measured with my multimeter the resistant of the cable is 0.1
@wilriker said in error:attempting to extrude with no tool selected while printing:
feel they changed along the course of this thread
hello, the main problem is just it is randomly changed from active tool to standby while printing. when it not printing this will not happened at all
before i post last night, i change a lot. change paneldue to 3.2 but it is beta when i try. and i change it back to the old firmware cause new paneldue firmware fit for rrf3.2 also
i also change the baudrate from 115200 to 57600, looks like the problem still exist but not often like before
i also change the cable. from 1m ribbon cable to connect mainboard to paneldue. i changed with stp cable. it is for LAN cable. i just found this cable and test it with 50cm long. the sympthom looks like more rarely show up
but a weeks ago, i print 8 hours long. not a really long printing object. but it can show 5 times. the last make me desperate cause i do not know the notification and the print failed.
@wilriker emm if i do not use serial how paneldue connected? looks like it happend with the lcd connected
my panel have screen guard before, now i remove it and the problem still show up yesterday. sorry for my long journey about this. sometimes it's not happened but lately it happened and make frustrated
@Phaedrux the problem still show up. at lately it more often. i have change the cable to STP lan cable used 4 cable only. i also make it shorter the cable is 50cm long only, before is 1.5m a weeks ago my problem is not occurs often. very rare but sometimes happened but this week it show more often.
is there any trigger event that when it change from active to standby i can forced it back to active?
any way to do it?
@dc42 any help about this. i have disperate to solve it with cabling
@Phaedrux could you recomend what length which best for the paneldue cable?
@wilriker noted... the real problem is random change of heater extruder from active to standby. and there is no confirmation or anything. that cause my printing is failure.
thanks a lot for your explanation. i describe all the weird behavior that might can help someone notice my real problem
thanks, so the bad command is nothing to do with my real problem
looking another reaso, fighting ha ha ha
@dc42 said in Error: attempting to extrude with no tool selected:
must be no more than 0.1 ohms per conductor
hello, sorry for asking. i am not electronic guy so i alittle bit blank with 0.1ohms per conductor. what this means
i check i use stp lan cable to do it and i check in the internet it is have resistence about 150ohms i cannot use this cable?
@Phaedrux check with M98 P"config.g" in the console there is no error found.
paneldue first boot no error found. but if i tap the stop button, bad command always show up. the number of bad command is random.
this one not resolved, it might one of the sympthoms why my attempting extruder no tool happened.
frustrated....
@theshabobo hello, sorry for asking directly
did you solved it? i also have this problem, i change to stp lan cable and this problem still happened.
any tips ?