[BUG] EZ31865 + PT100 + BTT OCTOPUS MAX EZ

[gianguardo]

Did you test the latest bugfix-2.1.x code?

Yes, and the problem still exists.

Bug Description

Hello, I'm trying to configure EZ31865 for Octopus max ez but I receive from the display err 989 temp. Can someone help me?

Bug Timeline

No response

Expected behavior

temp 25 (room temperature)

Actual behavior

err 989 temp

Steps to Reproduce

1
My setup:
Configuration.h
#define TEMP_SENSOR_0 -5
#define MAX31865_SENSOR_OHMS_0 100
#define MAX31865_CALIBRATION_OHMS_0 430
#define HEATER_0_MAXTEMP 520

Pin_BTT_OCTOPUS_MAX_EZ.h
/*
#define E1_STEP_PIN PG15 // MOTOR 6
#define E1_DIR_PIN PB3
#define E1_ENABLE_PIN PD5
#ifndef E1_CS_PIN
#define E1_CS_PIN PG9
#endif
*/
//MAX31865 MnP
#define TEMP_0_MISO_PIN PE13
#define TEMP_0_SCK_PIN PE12
#define TEMP_0_MOSI_PIN PE14
#define TEMP_0_CS_PIN PG9

Configuration_adv.h
#define TEMP_SENSOR_FORCE_HW_SPI

Code err temp

2
//#define TEMP_SENSOR_FORCE_HW_SPI
#define IGNORE_THERMOCOUPLE_ERRORS but i get er 989 as room temperature

3
#define TEMP_SENSOR_FORCE_HW_SPI
#define IGNORE_THERMOCOUPLE_ERRORS

Code err temp

Version of Marlin Firmware

2.1.x bug

Printer model

Custom

Electronics

Octopus max Ez

Add-ons

ez31865 + pt100

Bed Leveling

None

Your Slicer

None

Host Software

None

Don't forget to include

• A ZIP file containing your Configuration.h and Configuration_adv.h.

Additional information & file uploads

pins_BTT_OCTOPUS_MAX_EZ.zip
Configuration.zip
Configuration_adv.zip

[ellensp]

image posted in discord shows thermocouple is in wrong motor plug, plugged into motor 5 should be in motor 6

[gianguardo]

i fixed it but i get err temp

[ellensp]

you have #define software_SPI in the pins file

this is not correct case of the keyword

must be #define SOFTWARE_SPI

[gianguardo]

It wasn't there, I added it but continue to tell me err,
The Max31865 is configured 123ON and 4Off

[ellensp]

have not enabled
#define MAX_CONSECUTIVE_LOW_TEMPERATURE_ERROR_ALLOWED 10
or changed #define THERMOCOUPLE_MAX_ERRORS 15 to 20

[gianguardo]

I changed the code, always err

[ellensp]

are you sure you actually have a PT100 ?

[ellensp]

just for reference BTT info on the EZ31865 module https://github.com/bigtreetech/BIGTREETECH-MAX31865/tree/master/EZ31865_V1.0

[gianguardo]

I measured with the multimeter and I detect 112 ohm, I already tried following the manual

[gianguardo]

I made some more changes:
#define MAX31865 IGNORE_INITIAL_FAULTY_READS 10
#define SHOW_TEMP_ADC_VALUES
#define M115_GEOMETRY_REPORT

Now I can read the room temperature.
I noticed another problem now as I insert the SDCard or heat the cartridge it tells me err or it reveals wrong temperatures

[ellensp]

remove #define SOFTWARE_SPI if you still have that

[gianguardo]

Thanks for the help, finally now the temperatures after 200 °C tend to stabilize with an interval of 10°C.
The plate temperature sensor does not conflict with the pt100.
Inserting the SDcard immediately detects an err, how can I solve it?

[ellensp]

these are support questions, not bugs.I have to close this

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.