[Heat bed more slowly at print start]

@Slashee_the_Cow - yeah, the printer does seem to have a curve. if it's only set to heat about 1.5 deg, then I think it uses a lower power level, maybe more of a maintain, than heat to temp. 

 

so what I'm currently using is working, and since I only really print PLA, it works (i know 75 seems high for PLA, but I have the Fula-Flex mat from Fulament, and when i had it at normal temps, the prints kept coming loose. in fulament's documentation, it specifically says 75 deg. and ever since making that change, i haven't had issues)

 

i did try to use the variable with some subtraction math, but not multiplication. but i think my biggest problem may have been curly brackets instead of parenthesis. thanks for the code sample, i'll mess with it some more, now that i have a direction.

[Heat bed more slowly at print start]

I have my printer (Artillery Sidewinder S1) and Rasp Pi connected to a UPS (backup battery) because I experience a lot of brown-outs and fluctuations. If there is an actual black-out, then the generator will turn on within a minute. While running, the UPS says it can sustain the equipment for about 9 minutes. 

 

The problem I am having is when the bed first starts to heat up, it overloads the UPS and after about 30 secs, the UPS shuts off. I have been manually increasing the temperature of the bed buy a degree or 2 and that works fine, but somewhat tedious. (When the printer is running, it's only using about 35% of the UPS capacity, so I don't want to buy a bigger UPS.)

 

I have just added this code to the "Start G-Code" of my profile, and it seems to be working, but I wondered if there was a cleaner/better way to do it.

 

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M190 S{material_bed_temperature};
M104 S{material_print_temperature} T0
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M109 S{material_print_temperature} T0