#EBB36 ADC out of Range

4 messages · Page 1 of 1 (latest)

indigo fable
#

Hello guys,
i have just wired up my RR500 and wanted to setup RatOS but now the readout says ADC out of Range. I use a PT1000 Thermistor and i have 1085Ohms which is about room temp. The thermistor works fine. I tried a 2nd EBB36 Board and still the same issue. It is setup as MAX31865 in the cfg because my Hotend is not listed i had to write it in myself. I post the params here.

What i tried so far:
-Plug the PT1000 to the 2nd spot with a 4,7k resistor (ADC ....)
-Check the Thermistor wires itself
-Measure Resistance of the PT1000 which came out at 1,085k Ohms which is the right value for my room temp
-Power from the PSU is 24,2V coming to the Toolboard
-2nd EBB36 plugged in and still (ADC ...)

now i am running out of ideas.

I am using a Goliath Hotend

[extruder]
step_pin: EBBCan: PD0
dir_pin: !EBBCan: PD1
enable_pin: !EBBCan: PD2
microsteps: 16
rotation_distance: 33.500
nozzle_diameter: 0.400
filament_diameter: 1.750
heater_pin: EBBCan: PB13
sensor_type: MAX31865
sensor_pin: EBBCan: PA4
spi_bus: spi1
spi_speed: 4000000
rtd_nominal_r: 100
rtd_reference_r: 430
rtd_num_of_wires: 2
rtd_use_50Hz_filter: True
control: watermark
#pid_Kp: 21.527
#pid_Ki: 1.063
#pid_Kd: 108.982
min_temp: 0
min_extrude_temp: 180
max_temp: 300

Thank you for your help guys, i really appreciate it.

Can be closed or deletet whatever...problem was the coordination between hands and eyes...stupid me.

short fern
#

Since you've configured it as a MAX31685, that "ADC out of range" error is probably not from your toolboard mcu.

indigo fable
#

Hello @short fern,
thanks for the reply.

  1. i understand
  2. why directly on the board? In the manual it says that the PT1k port got a 4,7k resistor which is creating inaccuracy over the span of temperature rising.
  3. i just found the problem. It was the Octopus board where my eyes were not capable of coordinate my fatfingers to the right port...