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

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 ?

@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 ?

@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?