Many Problems with the A5

jirgel

IConnecting...
start
Printer is now online.
echo:Marlin 1.1.8
echo: Last Updated: 2017-12-25 12:00 | Author: (Telli Mantelli, Kris Waclawski, Samuel Pinches & Michael Gilardi, 21 Jan 2018)
echo:Compiled: Nov 10 2018
echo: Free Memory: 3053  PlannerBufferBytes: 1264
echo:V47 stored settings retrieved (678 bytes; crc 23770)
echo:  G21    ; Units in mm
echo:  M149 C ; Units in Celsius
echo:Filament settings: Disabled
echo:  M200 D1.75
echo:  M200 D0
echo:Steps per unit:
echo:  M92 X80.00 Y80.00 Z800.00 E100.00
echo:Maximum feedrates (units/s):
echo:  M203 X500.00 Y500.00 Z15.00 E25.00
echo:Maximum Acceleration (units/s2):
echo:  M201 X1000 Y500 Z100 E5000
echo:Acceleration (units/s2): P<print_accel> R<retract_accel> T<travel_accel>
echo:  M204 P800.00 R800.00 T1000.00
echo:Advanced: S<min_feedrate> T<min_travel_feedrate> B<min_segment_time_us> X<max_xy_jerk> Z<max_z_jerk> E<max_e_jerk>
echo:  M205 S0.00 T0.00 B20000 X8.00 Y3.00 Z0.30 E5.00
echo:Home offset:
echo:  M206 X0.00 Y0.00 Z0.00
echo:Mesh Bed Leveling:
echo:  M420 S0 Z0.00
echo:  G29 S3 X1 Y1 Z0.52500
echo:  G29 S3 X2 Y1 Z0.42500
echo:  G29 S3 X3 Y1 Z0.37500
echo:  G29 S3 X4 Y1 Z0.40000
echo:  G29 S3 X5 Y1 Z0.55000
echo:  G29 S3 X1 Y2 Z0.45000
echo:  G29 S3 X2 Y2 Z0.47500
echo:  G29 S3 X3 Y2 Z0.42500
echo:  G29 S3 X4 Y2 Z0.42500
echo:  G29 S3 X5 Y2 Z0.52500
echo:  G29 S3 X1 Y3 Z0.45000
echo:  G29 S3 X2 Y3 Z0.30000
echo:  G29 S3 X3 Y3 Z0.32500
echo:  G29 S3 X4 Y3 Z0.35000
echo:  G29 S3 X5 Y3 Z0.35000
echo:  G29 S3 X1 Y4 Z0.55000
echo:  G29 S3 X2 Y4 Z0.47500
echo:  G29 S3 X3 Y4 Z0.42500
echo:  G29 S3 X4 Y4 Z0.50000
echo:  G29 S3 X5 Y4 Z0.52500
echo:  G29 S3 X1 Y5 Z0.55000
echo:  G29 S3 X2 Y5 Z0.55000
echo:  G29 S3 X3 Y5 Z0.47500
echo:  G29 S3 X4 Y5 Z0.47500
echo:  G29 S3 X5 Y5 Z0.62500
echo:Material heatup parameters:
echo:  M145 S0 H205 B70 F255
echo:  M145 S1 H240 B110 F0
echo:PID settings:
echo:  M301 P35.30 I4.35 D71.57
echo:SD init fail

Samuel Pinches

Hmmm... all looks good and normal there.

Samuel Pinches

Ok. Next test. Can you please remove the bed from the printer, unplug from the motherboard and put it in the oven. Set the oven to 60C, and put the heater plate (glass not needed) onto a tray.
Use a multimeter to measure the resistance of the thermistor wires, and also measure the temperature of the bed using the IR thermometer. The resistance should match this chart:

Samuel Pinches

Samuel Pinches

It sounds like the measurement is correct at room temperature, but is not correct as the temperature increases.

Samuel Pinches

If this all matches with the expected values, then the problem is with the motherboard. Then there are two options:

Option 1: Ask JGAurora for a replacement motherboard

Option 2: Use the second spare thermistor port on the motherboard. Swap the THB and TH2 pins in the firmware. More info on this process here.

jirgel

I am a simply guy but i think the ntc is down 40 c with ir thermometer
 according to the table is 17c right ?

Samuel Pinches

1.4MegaOhm = 1400000 ohm => -23C!!

so I think there may be something wrong with the thermistor...

just checking, this was measured with the thermistor unplugged from the motherboard?

jirgel

Jep heatbed in the bakingofen. By 60c and i mesurent all time by cool down in the ofen.

A little Question please ist 1400000 = -11 or how calculated ohm ?

Samuel Pinches

@jirgel - did you see the table I posted above? It shows you the expected ohm resistance measurement for different temperatures. Make sure you are reading the degrees C (Celsius / Centigrade) column, and not the degrees F (Fahrenheit) column.

jirgel

I am a idiot  

Samuel Pinches

jirgel

New thermistor soldert 
Down and check

jirgel

and a new error

Unexpected error while reading serial port, please consult octoprint.log for details: SerialException: 'device reports readiness to read but returned no data (device disconnected or multiple access on port?)' @ comm.py:_readline:2581Please see https://faq.octoprint.org/serialerror for possible reasons of this.Changing monitoring state from "Operational" to "Offline (Error: SerialException: 'device reports readiness to read but returned no data (device disconnected or multiple access on port?)' @ comm.py:_readline:2581)"Connection closed, closing down monitorChanging monitoring state from "Offline" to "Detecting serial port"Serial port list: ['/dev/ttyUSB0']Connecting to: /dev/ttyUSB0Changing monitoring state from "Detecting serial port" to "Opening serial port"

jirgel

Can it be thats die maker tft and ocotprint a not convertible is ? Or why stop the printer in the middel of a print? What can be the problem?

jirgel

Update i chance the usb to the motherboard and octoprint have the same Interrupt.

I set the speed of the usb in octoprint to dwc_otg.speed=1 
And i have the same error in the print.

And i have a orignal set of octoprint with the right power adapter.

And now i have no new idea have anyone a new input for me pls

Samuel Pinches

Can you unplug the LCD cable while printing, maybe this helps?

jirgel

Good morning Sam.
Nope same error unplug the lcd.

Last but not least i test a new power adapter to you now one ?

Samuel Pinches

Hmmm... I'm running out of ideas!! What power adapter are you using for the octopi, can you post some photos?

jirgel