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I've mentioned about how my Ender 5's Micro Swiss extruder stopped working, and that I wasn't sure if it was the stepper driver or the wiring from the mcu to extruder stepper motor.
Turns out it was the wiring. In the meantime I had already swapped in an SKR 1.4 Turbo mcu, even though it doesn't really fit in the Ender 5 chassis properly. I made a new wire harness from Ethernet stranded cable. It has been working really well with Klipper for about 2 months. Yesterday, I decided it was time to try swapping the Creality 4.2.7 mcu back in and button up the printer.
Things were going well. I had removed the borosilicate glass bed and put it to the side while dialing in the settings. I tried setting up Klipper with MainSail. That did not go well. I could not get it to reliably connect. So I went back Klipper with fluiddpi. That went much easier. The initial dialing in worked well. In fact, I was at the point where I needed to put the glass plate back on, so I could continue with the configuration process. So as to not do any damage to the Klipper configuration I had on the Pi 4 B+, I did the Creality-4.2.7-tuned Klipper config on my Pi 3B+.
Then disaster struck. I don't know why or how but, as I was placing the glass plate on the printbed, I smelled smoke. I looked down to my left and saw a curl of magic smoke rising from the Pi 3B+ 🌋. It died. I powered down the Pi 3 and Ender 5 then disconnected the Pi from the printer. I tried turning the printer on >>> nothing. The Creality 4.2.7 was also dead. I uninstalled it. When I turned it over, I saw that the Polyfuse that protects the micro USB power input had black soot around it 😲 More on this later.
So, I reinstalled the SKR 1.4 Turbo. Got it all wired up and started testing. Nothing from the BL Touch. Dang, it's dead too 😫 A dead Pi 3B+, dead Creality 4.2.7 mcu, dead BL Touch. I've ordered a replacement Pi 3B+ and a Creality CR10 Touch. I won't order a Creality 4.2.7 at this point.
And, on that Pi 3B+ that I said I'd come back to, I learned online that polyfuses apparently reset themselves after tripping. A couple of places even said it can take several days for them to repair themselves. I've never heard of such a thing with electronics, but who knows (well, maybe 1 of you forum members might). I'll leave the board alone for a week and try it again. If it doesn't work I'll see about replacing the polyfuse.
#creality #4.2.7 #smoke #magic #skr #1.4 #turno #died
Turns out it was the wiring. In the meantime I had already swapped in an SKR 1.4 Turbo mcu, even though it doesn't really fit in the Ender 5 chassis properly. I made a new wire harness from Ethernet stranded cable. It has been working really well with Klipper for about 2 months. Yesterday, I decided it was time to try swapping the Creality 4.2.7 mcu back in and button up the printer.
Things were going well. I had removed the borosilicate glass bed and put it to the side while dialing in the settings. I tried setting up Klipper with MainSail. That did not go well. I could not get it to reliably connect. So I went back Klipper with fluiddpi. That went much easier. The initial dialing in worked well. In fact, I was at the point where I needed to put the glass plate back on, so I could continue with the configuration process. So as to not do any damage to the Klipper configuration I had on the Pi 4 B+, I did the Creality-4.2.7-tuned Klipper config on my Pi 3B+.
Then disaster struck. I don't know why or how but, as I was placing the glass plate on the printbed, I smelled smoke. I looked down to my left and saw a curl of magic smoke rising from the Pi 3B+ 🌋. It died. I powered down the Pi 3 and Ender 5 then disconnected the Pi from the printer. I tried turning the printer on >>> nothing. The Creality 4.2.7 was also dead. I uninstalled it. When I turned it over, I saw that the Polyfuse that protects the micro USB power input had black soot around it 😲 More on this later.
So, I reinstalled the SKR 1.4 Turbo. Got it all wired up and started testing. Nothing from the BL Touch. Dang, it's dead too 😫 A dead Pi 3B+, dead Creality 4.2.7 mcu, dead BL Touch. I've ordered a replacement Pi 3B+ and a Creality CR10 Touch. I won't order a Creality 4.2.7 at this point.
And, on that Pi 3B+ that I said I'd come back to, I learned online that polyfuses apparently reset themselves after tripping. A couple of places even said it can take several days for them to repair themselves. I've never heard of such a thing with electronics, but who knows (well, maybe 1 of you forum members might). I'll leave the board alone for a week and try it again. If it doesn't work I'll see about replacing the polyfuse.
#creality #4.2.7 #smoke #magic #skr #1.4 #turno #died
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