UPS 24v on SKR PRO RRF 3

sankafola

Hello all i wonder if i can get some help here , i have the following :
Anycubic Predator
SKR PRO ver 1.2
Smart Effector ver 2
Magballs
RRF 3

Board: STM32F4 SBC (STMSBC)
DSF Version: 3.2.0-beta1+1
Firmware: RepRapFirmware for STM32F4 based Boards 3.2-beta1_2 (2020-09-15b1)

Am trying to add Resume by using the Bigtree UPS 24v , which have 2 wires to the PS 24v and another plug for a 3 pin connector , anyone can help how to configure it in the RRF config files and where to connect it to which connector on the SKR PRO

thanks in advance

A Former User

AFAIk RRF3 doesn't yet have support for a power loss input, but you have to set it up as a trigger on a available pin and have the trigger macro in turn execute your pause.g (or replicate its function in the trigger macro)

See https://duet3d.dozuki.com/Wiki/Gcode#Section_M581_Configure_external_trigger

Stephen6309

https://duet3d.dozuki.com/Wiki/Gcode#Section_M911_Configure_auto_save_on_loss_of_power

sankafola

@bearer so i put the 3 pin one one empty one ok then i put the M581 in the config.g as

M581 P"e0stop+e1stop" T2 C1

Trigger 2 is a pause

now my questions how to save the last position of the hotend and how to resume ? and how to make the 3 pin monitor the power ?

A Former User

@sankafola said in UPS 24v on SKR PRO RRF 3:

now my questions how to save the last position of the hotend and how to resume ?

i thought pause handles the saving, according to https://duet3d.dozuki.com/Wiki/Gcode#Section_M916_Resume_print_after_power_failure

and how to make the 3 pin monitor the power ?

presumably one of the three pins go high or low when the power input fails, but i'm not familiar with the module

sankafola

so i need also to use M911 in the config.g but let me ask you this if the pause saves the last position of the print i need to make a marco to get this info and resume how ??

sankafola

@bearer here is the one am talking about https://www.biqu.equipment/collections/expansion-board/products/btt-ups-24v-v1-0-resume-printing-while-power-off-module

sankafola

@bearer so if i do this M581 P"!e2stop" T2 C0 means when the inverted pin goes from 5 v to 0 do a pause is that right ?

but if the power is cut and these capacitor keep it alive for 1 more min and it paused how it will resume what do i need to do to get it to resume ?

A Former User

@sankafola I'm interested too because I have a 12VDC power supply and to be able to use the resume after power outage I thought to buy this:

https://www.aliexpress.com/item/32967985788.html?spm=a2g0o.productlist.0.0.2d9255cbWfDPoe&algo_pvid=cdd5d04b-1af9-4065-9037-be32ec8befcc&algo_expid=cdd5d04b-1af9-4065-9037-be32ec8befcc-8&btsid=0b0a555b16040680685654891ea7fc&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_

So it would be possible to connect the otuput port of this "UPS" to a free pin of the DUET 2 Wifi and trigger a pause?