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Board not detected by Windows #45
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Try removing all the other connections ie stepper an fan cables etc. That's what I had to do m theory is t was trying to feed power to the components with connected. |
@DJames2682 , all discriben earlie was tested without any additional load on board. Also USB-C connection was tested via USB-C to USB-C wire and I get the same result as USB-C to USB-A that was in the box with board. |
It took a little persuasion to get mine to connect. On a windows computer I went under device manager and deleted all of the com ports. Took the board completely out of the printer. Installed the jumpers and used an actual USB 3.0 cable . Had the software running when I reconnected the board. I'm not sure what of this combination worked for me but it was a little touchy getting it to connect to the pc via the bootloader software. With regards to the bootloader it is my understanding that the stm software is to update the bootloader not load the bootloader. There is already be a bootloader pre installed. Btt recommends updating firmware via the SD card instead of via the stm software because it's fairly complicated. If your running marlin you should be ok. Riprap need an updated bootloader and I'm not sure about klipper. I used an 16gb SD fat32 format with firmware.bin in the root directory with nothing else on it. I've had issues in the past with larger cards. I inserted the card and pressed the reset button. Flashed away. I'd suggest starting with a different small as card (they get crupted pretty easily). |
Cheched variant with smaller SD card - with no result. Tryed to connect via St-Link v2 (PA13(SWDIO), PA14(SWCLK)) but St-Link don't found target (STM32 ST-LINK Utility and STM32CubeProgrammer). Seems my board is a brick. |
Try dissconnecting everything from the board. Worked for me
…On Wed, Jul 28, 2021, 2:51 PM PrideParrot ***@***.***> wrote:
Cheched variant with smaller SD card - with no result.
Tryed to connect via St-Link v2 (PA13(SWDIO), PA14(SWCLK)) but St-Link
don't found target (STM32 ST-LINK Utility and STM32CubeProgrammer). Seems
my board is a brick.
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All described earlier was tested only with board without any additional modules. Also checked for mechanical damage or bad soldering and didn't found anything. |
initeresting, I got the same issue on my Octopus v1.1. I power up the first time from the USB-C and the board was Ok. no issues, then I started the process again with a Y Z with motors, and everything was OK. I checked with a multimeter and I noted there is a short on the VOUT of the U15 regulator, I desoldered U15 to check clearly where the short is and the pad at Vout is still shorted (resistance about 1.1Ohm) to ground. I powered the board to check if the 5V inpunt pad is ok and the multimeter detects 5V input(pin1) but withtout U15 of course i cannot get 3.3V. any clue? |
from the schematic, the +3.3V coming out from the regulatorU15 , powers different section of the board. |
I double checked my setup, and it is likely one new tmc5160 i fitted in E0 was faulty and leaving standalone i measured the digital power pin and ground with a multimeter and sadly it was shorted draining lot of current on the 3v3. still unsure why the CPU should be affected. still dont know why but because of that, probably the CPU is fried having a short into the +3v3 power rail. I will fix replacing a new cpu in this case. |
Forgot to add. I contacted the seller to replace the board, and he agreed to the terms of payment for the delivery. I paid for the delivery, the parcel never arrived (invalid track, no response from seller). |
Did any one manage get the board working again? It looks like I am having the same issue after I had the power supply plugged in to a faulty power strip. |
Same problem here. Seems the 3V3 Line is shortened. Has anyone found the solution of our problem? |
yes I removed the processor and the problem disappeared on all channels |
this is the 2nd board running in to the same issue. |
Likewise, I wasted 44$ on this board from ali express, shelved it for a couple months, went to start it and it only powers off of usb-c and will not fucking install marlin. For god sakes BigTreeTech, I e been a loyal customer to the brand since the skr 1.3, I have a PILE of your boards, including two burnt dead gtrs, an skr 1.4, a skr 1.4 pro, a board of your driver's, and the newest thing is always a total pile of mismarked garbage. How the fuck do you people sleep at night? |
Hi guys just wanted to add something I found. I had issues with no comm and board didn't show up as a port. I was able to trace it to the 3.3 regulator u15. I lifted the Vout pad and hooked it up to a power supply. I got comms back and was able to get into dfu mode. You might have something loading down your regulator or the mcu is toast. Also, if they are using the RT-9193 and the schematic is correct, then they did not follow the recommended layout by tying BP to gnd with a bypass cap. This might be why it seems folks are having issues. The data sheet specifically states not to leave it floating. |
Hi cd85233, |
@cd85233 so if i desolder the U15 and do that mod that you did , my octupus v1.1 can be saved? |
Just firing up my octopus v1.1 board after having installed it in the printer. I had loaded firmware onto it perfectly fine before, but now the thing doesn't respond. I can connect to it from my pc via usb, but the serial is just an endless loop of max3421e initialization, got 255. Anybody know if this error is related to the u15 issue here? Or am I correct in understanding that the u15 issue here is actually completely disabling boards all together, like no serial console or anything? |
Anyone got a working octopus out of the bricked one since? |
I think its broken. |
Hi,
just got my Octopus 1.1 and try to upload Marlin on it. But after connecting via usb board not detected by Windows (no new devices in Device Manager, any type), aslo not detected by STM32CubeProgrammer (any connection type). Tryed to power board via usb-c or via external 24v supply (without J68 jumper), but no differents. If I understand correctly, I don't have bootloader on board. But uploading it via SD-card not working (no “FIRMWARE.CUR” on SD-card in the end).
Is it possible to alive board with USBasp or else some how?
Windows: 10 Home
Version: 20H2
OS: 19042.1110
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