endstops on CONN_LCD (E7/E8)

CJ.BRAVO

Hey, was wondering to which pins should I connect for E7/E8 on the LCD conn to create trigger.
there's a bunch..

thanks!

droftarts

On the wiring diagram, they are marked as stop10 and stop11. They are the 10th and 11th driver, but are seen by the firmware as the 7th and 8th extruder connections, so defined as E7 and E8!

Ian

TC

Are they supppsed to work without any special changes? Because I tried that and they triggers on these two did respond at all.

dc42

@TC said in endstops on CONN_LCD (E7/E8):

Are they supppsed to work without any special changes? Because I tried that and they triggers on these two did respond at all.

If you use RRF 2.04 then you need to add external pullup resistors when using them. If using RRF3, enable the pullup resistor using ^ at the start of the pin name.

CJ.BRAVO

@dc42
Hi david, can you elaborate on the pullup resistor setup? also, do I need to ground my trigger ?

dc42

@CJ-BRAVO said in endstops on CONN_LCD (E7/E8):

@dc42
Hi david, can you elaborate on the pullup resistor setup? also, do I need to ground my trigger ?

I've just checked the code, and to use those pins as endstop inputs in RRF 2.04 you don't normally need to add pullup resistors, because the internal pullup resistors are enabled except when you configure those pins for filament monitors.

CJ.BRAVO

ok. so need for pullup resistors for e7 and e8. what about the rest of the trigger, do i need resistors?

and what about grounding the triggers? I noticed that if not grounded the duet acts funny.. kinda freezes.
does that make sense?

dc42

@CJ-BRAVO said in endstops on CONN_LCD (E7/E8):

and what about grounding the triggers? I noticed that if not grounded the duet acts funny.. kinda freezes.

What do you mean by "grounding the triggers"? What are you using to generate a trigger?

CJ.BRAVO

@dc42

I've got a 3 prong button that triggers the endstop - running some macros.