I have a Tevo Tarantula with a MKS Base 1.5 board and dual extruders. I am running Marlin RC8 Tevo Community build for the dual extruder, large bed and SN04 sensor.
All temperature sensors work and give accurate reading but
E1 when activated runs at 100% until the overtemps kicks in and shuts down the system. Like I said, it reads proper temperatures through the thermistor it just won’t stop at the set temperature. I checked the MOSFET and there is no obvious scorching or bad solder joints on the MKS board. This leads me to believe it is a mix-up in firmware but, being a bit of a newbie on this, I am still getting familiar with G-code and Marlin.
I have confirmed the correct board is being referenced in firmware from
boards.h but looking at
configuration.h I just get confused. What I am thinking is somehow/somewhere
E1 might be referenced as a fan that is just off or on. Anybody have ideas?
I am not sure what the hardware config is for the Tevo Tarantula
Make sure your
configuration.h file is setup for your hardware. The extruder defines are describe in Conditional_LCD.h
It looks like the configuration.h file on GitHub is configured for a single extruder.
For example, if you have 2 hotends; but, "HOTENDS=2" is not set then the I/O will not be configured for the 2nd hotend. I just looked at the code and if
HOTENDS == 1 then the
MOSFET_D_PIN will be used to control FAN1 (which sounds very similar to what you are describing that you are seeing).
#if HOTENDS == 1 #define FAN1_PIN MOSFET_D_PIN #else #define HEATER_1_PIN MOSFET_D_PIN #endif