Notifications
Clear all

Multiplexer I/O cable missing  

  RSS
roy.e
(@roy-e)
Active Member
Multiplexer I/O cable missing

Well, I got my upgrade kit and it was missing the I/O cable for the multiplexer. So I made my own. It took me a little while to figure out so I figured I would post and save anyone else the time.

Happy MM Printing! 😀

The manual only shows where the red wire goes. here is the picture from the manual with all the remaining wire colors on pins 1-4.

would have been easier if it was just a straight cable. but pins 2,3,4 are reversed. Had to look at the source code of the firmware to figure that out 😕


#ifdef SNMM
snmm_extruder = tmp_extruder;

st_synchronize();
delay(100);

disable_e0();
disable_e1();
disable_e2();

pinMode(E_MUX0_PIN, OUTPUT);
pinMode(E_MUX1_PIN, OUTPUT);
pinMode(E_MUX2_PIN, OUTPUT);

delay(100);
SERIAL_ECHO_START;
SERIAL_ECHO("T:");
SERIAL_ECHOLN((int)tmp_extruder);
switch (tmp_extruder) {
case 1:
WRITE(E_MUX0_PIN, HIGH);
WRITE(E_MUX1_PIN, LOW);
WRITE(E_MUX2_PIN, LOW);

break;
case 2:
WRITE(E_MUX0_PIN, LOW);
WRITE(E_MUX1_PIN, HIGH);
WRITE(E_MUX2_PIN, LOW);

break;
case 3:
WRITE(E_MUX0_PIN, HIGH);
WRITE(E_MUX1_PIN, HIGH);
WRITE(E_MUX2_PIN, LOW);

break;
default:
WRITE(E_MUX0_PIN, LOW);
WRITE(E_MUX1_PIN, LOW);
WRITE(E_MUX2_PIN, LOW);

break;
}

Posted : 28/05/2017 5:22 pm
Jakub Dolezal
(@jakub-dolezal)
Member Admin
Re: Multiplexer I/O cable missing

Hi Roy.e,
We will update this part of the manual with a new photo soon.

Regarding the cables, please contact the support at [email protected]

Assembly manuals

/ Knowledge Base
The guy behind Prusa assembly manuals...

Posted : 29/05/2017 1:30 pm
roy.e
(@roy-e)
Active Member
Topic starter answered:
Re: Multiplexer I/O cable missing

Already did. Thanks!

Posted : 29/05/2017 6:45 pm
Share: