Printer Model: i3Rs32 ( French copy of prusa mk3)
MCU / Printerboard: BTT Skr V1.4 then SKR 3
klippy.log
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Describe your issue:
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My printer can print pla filament without problem but since i’m trying to print ABS and therefore pushing the bed up to 100°C i keep having trouble with the verify heater_bed.
If i’m posting this thread is because i think it is a klipper configuration problem because here is what i’ve done already
At first i’ve change my cables bed, then the thermistance. still the same error,
So i add the verify heater section to my printer.cfg with less restrictive parameter check gain time to 240 & heating gain 1 instead of 2
After i’ve upgarde my bed from a 120 W to a 200W one , still the same error,
Then i’ve read that it could come from the mosfet of my skr v1.4, so i’ve change it with a skr 3 , it is heating up faster so i dont regret my upgrades but i have still the same error.
There is a strange thing when the print start at approx 3% of the print the printer is heating the bed (100%) but the temperature is dropping down as if the bed were no longer powered and then the verify heater alarm shut down everything .
I have to tell that i’ve made the new PID for the heater bed at the desiring temperature (105°C)
I ve thought of changing the power supply (240w only) to a better one because maybe it could come from a lack of amps but i wanted to check with you if it can be a error in the klipper setting.
That’s what i thought , i did perform a PID with the new bed and as i was writing my post i went to see the power of my PSU and understand that it is power undersized ! i’ll get a new one and hope my problem will disappear ! thank you for your input.
One time when I was a young and stupid teenager, back when home surround sound was a relatively new thing, I had gotten my first setup going (horrible by any standards but I was a broke kid).
Anyways, It didn’t come with a subwoofer but it had a sub out. I happened to have an old subwoofer amp and a sub. But it was made for a car and needed something like 12V@15A.
This was back before you could buy a 20 amp SMPS off Amazon for $20, everything was linear power supplies back then with a massive transformer and they were EXPENSIVE.
But I DID have some old Computer PSUs laying around and they were rated for 12V@10A.
So brilliant me decides, I’ll just wire them in parallel and get 12V@20A. Got out the soldering iron and blobbed together the two bundles of 12V and Ground wires. Hooked it all up and…
It actually worked! I thought I was the coolest kid on the block and brilliant.
It was chugging away sitting on my bedroom floor and I was happy as can be.
That lasted about 3 mins before the switching MOSFET catastrophically died. I heard “tick… tick tick” and was like “wha…?” before WOOSH. MOSFET caught fire and I briefly panicked before it put itself out. Thank god.
That’s the day I learned about load balancing.
Related video for anyone who has never seen a MOSFET die in a horrible way.
Note: My flame was MUCH bigger. It might have taken something flammable on the board with it. Probably the foam/glue they use to keep components from vibrating.
Hello, so i’ve just changed my PSU to a 480W so it can be more powerful due to my specs, but unfirtunately i have still a verify heater error here my last klippy.log
