Disabled heater still turning on
I recently installed a bl touch on my duet 2 wifi/deux 5. I did the normal install on pwm 5/heater 7.
I have m307 H7 A-1 C-1 D-1 in my config file. Nothing about heater 7 in my config override.
When I first deploy the bl touch the red led on heater 7 comes on and the heater is outputting .9 to 1v
Is there any reason this should be happening or what should I be looking for?
timcurtis67 last edited by
Mine was on in the config-override file. Which firmware are you using?
Can you post your config file?
Since you're using a Duex as well things will be a bit different.
Verify your wiring and configuration using this:
; General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"BmB Motion Systems" ; set printer name
M552 S1 ; enable network
M586 P0 S1 ; enable HTTP
M586 P1 S0 ; disable FTP
M586 P2 S0 ; disable Telnet
M569 P0 S0 ; physical drive 0 goes backwards
M569 P1 S1 ; physical drive 1 goes forwards
M569 P2 S0 ; physical drive 2 goes backwards
M569 P3 S1 ; physical drive 3 goes forwards
M569 P4 S1 ; physical drive 4 goes forwards
M569 P5 S0 ; physical drive 5 goes backwards
M569 P6 S0 ; physical drive 6 goes backwards
M569 P7 S0 ; physical drive 7 goes backwards
M584 X0 Y1 Z5:6:7 E3 ; set drive mapping
M671 X-31.5:197.75:481.5 Y12.25:481.5:12.25 S10 ;leadscrew locations
M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z1600.00 E409 ; set steps per mm
M566 X600.00 Y600.00 Z12.00 E120.00 ; set maximum instantaneous speed changes (mm/min)
M203 X18000.00 Y18000.00 Z600.00 E1500.00 ; set maximum speeds (mm/min)
M201 X3000.00 Y3000.00 Z100.00 E10000.00 ; set accelerations (mm/s^2)
M906 X1000 Y1000 Z1000 E800 I30 ; set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout
; Axis Limits
M208 X0 Y0 Z0 S1 ; set axis minima
M208 X450 Y450 Z600 S0 ; set axis maxima
M574 X1 Y1 S3 ; set endstops controlled by motor stall detection
M574 Z1 S2 ; Define Z to use Probe. Home to Min
M558 P9 H5 F500 T4000 ; set Z probe type to BL Touch, Dive height of 5, bed speed 500, travle speed 4000
G31 P50 X-23.9 Y32.5 Z0 ; set Z probe trigger value, offset and trigger height
M557 X15:435 Y15:435 P10 ; define mesh grid
M305 P0 B4725 C7.060000e-8 ; set thermistor + ADC parameters for heater 0
M143 H0 S120 ; set temperature limit for heater 0 to 120C
M305 P1 T100000 B4725 C7.060000e-8 ; set thermistor + ADC parameters for heater 1
M143 H1 S285 ; set temperature limit for heater 1 to 285C
M307 H7 A-1 C-1 D-1 ; disable heater 7 for bltouch
M106 P0 S0 I0 F500 H-1 C"Part Fan" ; set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P1 S1 I0 F500 H1 T45 ; set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
M563 P0 D0 H1 F0 ; define tool 0
G10 P0 X0 Y0 Z0 ; set tool 0 axis offsets
G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C
; Custom settings are not defined
Can you post a photo of your wiring? Which pin are you actually using?
Wire colors are different than the bl touch but the translate to
2 pin connector
Brown-white / z probe in
White-black / ground
3 pin connector
Orange-orange / servo
Green-red / +5v
White-brown / ground
the red led on heater 7 comes on and the heater is outputting .9 to 1v
Where exactly are you measuring this?
Does the probe actually deploy and retract?
Also, for the sake of completeness, please post your config-override and probedeploy and retractprobe files.
@Phaedrux I'm measuring it on the green screw terminal that you would but your heater cartridge wires in. Its labeled E6 Heater.
; config-override.g file generated in response to M500 at 2019-12-30 23:50
; This is a system-generated file - do not edit
; Heater model parameters
M307 H0 A90.0 C700.0 D10.0 S1.00 V0.0 B1
M307 H1 A340.0 C140.0 D5.5 S1.00 V0.0 B0
M307 H2 A340.0 C140.0 D5.5 S1.00 V0.0 B0
M307 H3 A340.0 C140.0 D5.5 S1.00 V0.0 B0
M307 H4 A340.0 C140.0 D5.5 S1.00 V0.0 B0
M307 H5 A340.0 C140.0 D5.5 S1.00 V0.0 B0
M307 H6 A340.0 C140.0 D5.5 S1.00 V0.0 B0
G10 L2 P1 X0.00 Y0.00 Z0.00
G10 L2 P2 X0.00 Y0.00 Z0.00
G10 L2 P3 X0.00 Y0.00 Z0.00
G10 L2 P4 X0.00 Y0.00 Z0.00
G10 L2 P5 X0.00 Y0.00 Z0.00
G10 L2 P6 X0.00 Y0.00 Z0.00
G10 L2 P7 X0.00 Y0.00 Z0.00
G10 L2 P8 X0.00 Y0.00 Z0.00
G10 L2 P9 X0.00 Y0.00 Z0.00
M280 P7 S10
M280 P7 S90
Just for the sake of experimentation, can you try switching to PWM_3? You'll need to modify your existing commands to target that pin. Also verify your wires are ordered correctly by tracing them back to the BLTouch. Continuity check them as well.
So I changed it over to pwm4/heater6 and still the same thing.
Just so you know what I'm talking about with the red led. Here's a picture. Also where I am measuring the 1v
Yes I see that thanks. I'm not sure if that's normal or not but does the probe actually work at all? Deploy and retract and trigger?
Everything seems to be working. I don't have a bed or x/y motors installed right now so I can't test the homing, but everything seems to work
In answer to your original question, this is normal. The PWM output channels on the DueX5 share the same control pins as the heaters. So think of the LED as a "PWM active" indicator.
@dc42 thank you! Now I can probe peacefully