EBB36 ADC out of Range

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.
3 Replies
miklschmidt
miklschmidt15mo ago
Multiple things here: 1) You're using CAN, you're on your own here. RatOS support expects USB. You can use #klipper for your troubleshooting. 2) Do not use the MAX31685, wire the PT1000 directly to the thermistor input on the EBB and use sensor_type: PT1000. Since you've configured it as a MAX31685, that "ADC out of range" error is probably not from your toolboard mcu.
tame-yellow
tame-yellow15mo ago
Hello @miklschmidt, 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...
miklschmidt
miklschmidt15mo ago
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.
The inaccuracy amounts to 1-2 degrees at max, it doesn't actually matter, you tune your temperature anyway and it's constant. People have all sorts of issues with MAX31685 and PT1000 support where the results are infinitely worse and unreliable. YMMV.
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