Reassigning nozzle thermistor port to T1
Greetings all,
I've got a Prusa Mk3 Im working on for a customer.
The printer is throwing a MINTEMP error. The thermistor wiring is damaged near the nozzle, MINTEMP error is no surprise. I swap the thermistor out for a new one, still getting MINTEMP error. It appears that the thermistor and heater wires became frayed, and it's likely the T0 port on the board was shorted to +12V. It seems the port itself is damaged.
Before replacing the board, I would like to try using the T1 port, similar to this post: https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-hardware-firmware-and-software-help/edit-mk3s-firmware-to-use-different-thermistor-port/
The OP apparently got it done but didn't include enough detail to replicate the results.
The line I think I need to change is in the file pins_Rambo_1_3.h, line 53
#define TEMP_0_PIN 0
to
#define TEMP_0_PIN 1
This is a guess, could someone more familiar than me confirm?
RE: Reassigning nozzle thermistor port to T1
Greetings all,
I've got a Prusa Mk3 Im working on for a customer.
The printer is throwing a MINTEMP error. The thermistor wiring is damaged near the nozzle, MINTEMP error is no surprise. I swap the thermistor out for a new one, still getting MINTEMP error. It appears that the thermistor and heater wires became frayed, and it's likely the T0 port on the board was shorted to +12V. It seems the port itself is damaged.
Before replacing the board, I would like to try using the T1 port, similar to this post: https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-hardware-firmware-and-software-help/edit-mk3s-firmware-to-use-different-thermistor-port/
The OP apparently got it done but didn't include enough detail to replicate the results.
The line I think I need to change is in the file pins_Rambo_1_3.h, line 53
#define TEMP_0_PIN 0
to
#define TEMP_0_PIN 1
This is a guess, could someone more familiar than me confirm?
Hello and welcome to the Prusaforum!
Before you change anything on the hardware, I would check all wires (thermistor, heating cartridge) for loose contacts or short circuits, also connectors.
A master reset (printer factory reset) can often work wonders.
good luck 🖐️ !
Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen.
RE: Reassigning nozzle thermistor port to T1
Sorry for necroposting, but this topic appears in Google search at the top so i figured i will share the solution here since i had the same problem. to do this, download the firmware from the github repo, then open the pins_Einsy_1_0.h, pins_Rambo_1_0.h or pins_Rambo_1_3.h file depending on what firmware you want to compile, and change the "#define TEMP_0_PIN 0" row. default is in fact 0 that indicates the t0 port on the board, modify it to "#define TEMP_0_PIN 1" then follow the instruction for compiling the firmware normally and you will have the hotend thermistor read on the t1 port of your board