is anyone using klipper on their anet a8? i have been running it for about a week now and the prints and speed are great but i am having a major issue with the board over heating. mostly the hotend mosfet. after around 2 days of printing and getting failed prints around 30% just due to the hot end loosing power and klipper shutting the printer down. i checked the board after the failed prints and the mosfet for the hotend was too hot too touch, adding a fan would allow a print to finish but on day 3 the hotend would not get above 45c.
i pulled the board and did some testing to find out the mosfet failed. after replacing it with one from a parts board its up and running again, i also changed to the stock heating element thinking that maybe the new one was pulling too much power but no change. still fails to complete a print without a fan on the board so i know a failure of the fet is going to happen again.
this printer never had an issue with stock firmware. i also installed a v6 clone around the same time but it is using the same element as the stock hotend. I have ran the PID calibration also so thats all done.
any ideas on why the mosfet is being pushed so hard before i just flash back to the stock firmware?
I don't think the controller cards for the Anet A8 are terribly robust. I added an aftermarket FET driver to my printer after replacing a couple of controller cards that stopped heating up. They are very simple to install, usually go for around $10 and are well worth it to protect the mainboard. https://www.amazon.com/anet-a8-mosfet/s?k=anet+a8+mosfet
Yeah I ended up swapping everything over to a ramps board for that printer. It was just crazy that I ran that board on 3 of my printers for years with no problems but as soon as I switch to klipper it had overheating issues. I found out klipper just drives the differently causing all the heat but yeah an external mosfet would have also fixed it I just wanted to try out a ramps board. Runs great with a bltouch and the pressure advance and all the other fine tuning things you can do on the fly. I'm definitely sold on keeping klipper lll
is anyone using klipper on their anet a8? i have been running it for about a week now and the prints and speed are great but i am having a major issue with the board over heating. mostly the hotend mosfet. after around 2 days of printing and getting failed prints around 30% just due to the hot end loosing power and klipper shutting the printer down. i checked the board after the failed prints and the mosfet for the hotend was too hot too touch, adding a fan would allow a print to finish but on day 3 the hotend would not get above 45c.
i pulled the board and did some testing to find out the mosfet failed. after replacing it with one from a parts board its up and running again, i also changed to the stock heating element thinking that maybe the new one was pulling too much power but no change. still fails to complete a print without a fan on the board so i know a failure of the fet is going to happen again.
this printer never had an issue with stock firmware. i also installed a v6 clone around the same time but it is using the same element as the stock hotend. I have ran the PID calibration also so thats all done.
any ideas on why the mosfet is being pushed so hard before i just flash back to the stock firmware?
Dwatters;
I don't think the controller cards for the Anet A8 are terribly robust. I added an aftermarket FET driver to my printer after replacing a couple of controller cards that stopped heating up. They are very simple to install, usually go for around $10 and are well worth it to protect the mainboard. https://www.amazon.com/anet-a8-mosfet/s?k=anet+a8+mosfet
Yeah I ended up swapping everything over to a ramps board for that printer. It was just crazy that I ran that board on 3 of my printers for years with no problems but as soon as I switch to klipper it had overheating issues. I found out klipper just drives the differently causing all the heat but yeah an external mosfet would have also fixed it I just wanted to try out a ramps board. Runs great with a bltouch and the pressure advance and all the other fine tuning things you can do on the fly. I'm definitely sold on keeping klipper lll