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bigtreetech / BIGTREETECH-SKR-mini-E3

BIGTREETECH SKR-mini-E3 motherboard is a ultra-quiet, low-power, high-quality 3D printing machine control board. It is launched by the 3D printing team of Shenzhen BIGTREE technology co., LTD. This board is specially tailored for Ender 3 printer, perfectly replacing the original Ender3 printer motherboard.
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[BUG] Permanent Blue Screen #146

Open TeLiP opened 4 years ago

TeLiP commented 4 years ago

Tried to flash Bigtreetech's firmware for the BLTouch to the SKR Mini e3 V1.2. The screen stayed permanently blue, no text. Waited about ten minutes before resetting. No previous working firmware builds will flash now. Screen is permanently blue.

Steps to reproduce

  1. Placed Bigtreetech's firmware.bin file onto SD card.
  2. Powered on the printer
  3. Permanent blue screen
Scope666 commented 4 years ago

I'm still waiting for my E3 to arrive from China, but I've had this EXACT same symptom happen multiple times on the stock board. It happens when you get close to 99% used program space, the calculations used to determine if it fits or not seem to be off and not account for the bootloader. (firmware flash too big and "steps on" the bootloader)

When this happens I have to use my Pi's GPIO pins and reflash it that way, which bypasses the need for a bootloader. I'm not sure if that would apply for the SKR since it loads firmware off SD instead...

Procedure I use: https://www.fission3d.com/guides/flash-bootloader-and-install-firmware-with-raspberry-pi

buhralex commented 4 years ago

Your firmware is broken That's not a bug. That's pebkac

HVJ17 commented 4 years ago

The issue is the wires on the BLTOUCH. There are several wiring variants. Switch the red and blue/brown on the end that plugs into SERVOS, leave YELLOW alone.

Scroll to the very bottom of this https://www.antclabs.com/bltouch page to see BLTOUCH example.