Dual Extruder Pin Assignments

Hi Everyone. Im trying to setup a dual extruder on my Rambo V1.1 board. The second extruder does not run independently and heats up when the first one does. As shown in the picture, It should be set to 0, but is running much hotter. I beleive this issue has to do with the pin connectors. but i am unsure what to set the value to... can anyone tell me what i should set the pin connector values to? or if im going in the completely wrong direction, can someone help me out?! please?!!!!

Thanks for the help in advance.

#define HEATER_1_PIN -1 //7
#define TEMP_1_PIN 1

this indicates that HEATER_1_Pin is not used with the -1 in front of it. the pin 7 is commented out
change it to this:

#define HEATER_1_PIN 7
#define TEMP_1_PIN 1


temp1 is taken from adc pin 1
heater pin is digital pin 7.

the schematic of board can be found here:

[reprap.org]

Thanks for the help and information. So i changed the pin assignments per your recommendation, and now the second extruder wont even turn on... thoughts?

Temp_1_pin was always assigned to 1, yet your display photo shows 0C. That is a clue. James advice was for the heater part.


Look in Config.h, and define extruders as 2, and the sensors as a 1 for everything. (assuming you have Epcos 100k thermistors.)
.
.

Might look into the firmware.

// This defines the number of extruders
#define EXTRUDERS 2
.
.
.
#define TEMP_SENSOR_0 1
#define TEMP_SENSOR_1 1
#define TEMP_SENSOR_2 1
#define TEMP_SENSOR_BED 1

hope the solution is near.

Dave

Edited 4 time(s). Last edit at 05/01/2014 05:30PM by davew_tx.