Motor 8 Dead?

I have my stepup as per Ratrig connections, I haveb the three Z motors on M6, M7 and M8. What ever I try to home gives me an "Unable to read tmc uart 'stepper_z2' register IFCN!" error. I know its not hardware having tried different motors. I had read about others having the same problem with M8. In the stepper config iy looks ok , so I 'm lost as to what check now. I did a search but but still haven't found the answers. Have others had this problem?
19 Replies
blacksmithforlife
blacksmithforlife•2y ago
please upload your printer.cfg
Synapsis
Synapsis•2y ago
I'm also having problems with the 4 pin fan naming, the adxl on the tool head and lastb but not least my extruder will not stop when i ty to extrude 1mm. Sorry I lookong and learning but it slow. thanks
Synapsis
Synapsis•2y ago
please give me your paypal so i can send 10n euro for a beer.
blacksmithforlife
blacksmithforlife•2y ago
What control board do you have? Octopus?
Synapsis
Synapsis•2y ago
MAnta M8P 1.1
blacksmithforlife
blacksmithforlife•2y ago
Can you upload pictures of your wiring of the manta?
Synapsis
Synapsis•2y ago
yes
Synapsis
Synapsis•2y ago
.
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Synapsis
Synapsis•2y ago
The Top wire is the M8 that does not work.
blacksmithforlife
blacksmithforlife•2y ago
Looks like you plugged your 4pib fan into the wrong port
Synapsis
Synapsis•2y ago
This is a RatRig made from old parts and new. Strpper buzz works on all motors except M8 Stepper_buzz
blacksmithforlife
blacksmithforlife•2y ago
If you switch the connectors between motor 8 and 7, does 7 now not work?
Synapsis
Synapsis•2y ago
second Strange Swithed motors now 8 works but not 7 but if i put it back as it was 7 works but not 8
blacksmithforlife
blacksmithforlife•2y ago
So that suggests that it is a wiring issue. Check the connection that isn't working. Check the crimps on both sides. Make sure it is fully seated, etc.
Synapsis
Synapsis•2y ago
that was the first thing i did I used another new harness and it still does not work. Just tried it again to be sure
blacksmithforlife
blacksmithforlife•2y ago
Are the steppers new?
Synapsis
Synapsis•2y ago
no but they all work going to check the coils pairs but they move so they are not burnt MEt another guy who have the same problem he moved the motors down 1 so he used 5 6 and 7.
blacksmithforlife
blacksmithforlife•2y ago
By swapping the motor cables from 7 and 8 you already proved that stepper port is working. So either you have bad cabling or a bad stepper
Synapsis
Synapsis•2y ago
I checked the coilsand they are the same well that means ratrig just sent me 2 broken cabkles 🙂 I will swicth 7 and 8 ok just switced cable 7 and 8 , 7 stills works 8 no I will no put it back on 8 and test again nope doesn't work. It must be a hardware problem of BTT at this point need to move the steppers by one. this is what he used steppers x_step_pin=PE2, x_dir_pin=PB4, x_enable_pin=PC11, x_uart_pin=PC10, x_diag_pin=PF3, x_endstop_pin=PF3, y_step_pin=PF12, y_dir_pin=PF11, y_enable_pin=PB3, y_uart_pin=PF13, y_diag_pin=PF4, y_endstop_pin=PF4, z0_step_pin=PC9, z0_dir_pin=PC8, z0_enable_pin=PD1, z0_uart_pin=PD0, z0_diag_pin=null, z1_step_pin=PA10, z1_dir_pin=PA14, z1_enable_pin=PA15, z1_uart_pin=PF8, z1_diag_pin=null, z2_step_pin=PD11, z2_dir_pin=PD9, z2_enable_pin=PD15, z2_uart_pin=PD14, z2_diag_pin=null, z3_step_pin=PD8, z3_dir_pin=PC6, z3_enable_pin=PC7, z3_uart_pin=PD10, z3_diag_pin=null, # Voron 2.4 support e_step_pin=PD7, e_dir_pin=PD6, e_enable_pin=PF10, e_uart_pin=PF9, e_diag_pin=null, e_heater_pin=PE3, e_sensor_pin=PA1, stepper_spi_mosi_pin=PA7, stepper_spi_miso_pin=PA6, stepper_spi_sclk_pin=PA5, Maybe i wasn't clear Motor on M8 does not work if I move the cable and motor to M7 it works. Motor and cable that where on Motor 7 on M8 do not work. The motors are all working with the varius cables. Sorry but how can I move the m8 to m5 i'm lost Very strange the boards says 8 ports but there are 9 connectors. yep there is 3a and 3b
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