Don't all USB cables have the same standardized 4 pins? As for applications, I restarted my PC multiple times, it shouldn't have an impact. And shouldn't the device manager show something, regardless of the baudrate?
The printer works perfectly fine, unless I connect the Raspberry Pi to the printer, which produces the seemingly random artifacts in the video. Connecting my PC to it on the other hand does absolutely nothing.
What do you mean by powering the Pi from the printer? Soldering the Pi's power supply cable to the internal pins of the printer's PSU?
Yes, 4 Pins but many have only internally connected +5V and Ground but not the 2 data lines. I often had that problem when trying to connect Arduino´s to the PC using Arduino IDE; no connection...
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Hi @Quack 
Yep, USB cables are standard in connector's shape but not all are equivalent in the connection. Some uses better cobbler than others, shielding may vary too and, as @Hartmut_DK5LH said, some cables have only 2 out of 4 internal cable (the + and -, not the data line). Some are charging cables, others are data cables …
It goes the same with power source unit for raspberry pi. Some are better than others. I've tried using official power source for raspberry pi but it did not work so what I did at the end is, as you said, soldering a small circuitry (namely, a LM2596) to power the pi from my printer (note: I'm a total rookie in that, and still it was very easy). It was not about modifying the printer, actually – I didn't have to unscrew a single screw of the printer, I used a Y-shaped XT60 cable, if you wanna look on the net ;). "Chargers" sold on Amazon are generally cheaper than real power source units (which have to be precise in their current delivering; a USB charger does not really have too, I learnt).
But first things first, I'd probably try to get the connection to a computer working. I'd probably try different USB cable on a standard computer until I get a serial line to the printer, to rule out the raspberry pi.
You're a life saver. Out of the three cables I tried before none apparently were data cables, but knowing that the difference exists, I found the thickest (and unfortunately, also the shortest) cable I had lying around and using it, the connection works perfectly fine.
I then tried connecting the Pi to the printer with it, which resulted in the same artifacts as before. So, I once again taped over the 5V pin, as I had done with the charging cables and the artifacts disappeared.
I can now control the printer via octopi, as should be, BUT the printer still randomly clicks through the menus while the Pi is connected. I think I will try to update the firmware again and hope for the best.
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I can't get it to work since I get an 'not in sync' error from avrdude everytime I attempt to upload firmware, no matter whether via the Raspberry Pi or my PC. No idea what causes this and I can't seem to find a working solution for it on the Internet.
The clicking also remains and is starting to drive me nuts.
What version mainboard do you have? The newer (32bit) boards from creality need to be updated by adding a unique-named .bin firmware file to the SD card, then rebooting and it is flashed. AVRDude does not work in the latest boards.
I bought the 1.1.5 off of the official Creality store in August. Does that mean I should simply take the firmware and add it to the SD card instead of trying to upload it from my PC?
No, the 1.1.5 is the 8 bit board, it says it has the atmega 1248 from what I can see. The newer V4.2.2 or V4.2.7 boards are 32 bit. That one will probably need a bootloader, if you haven't flashed one already.
It says atmega 1248P on the chip, yes. I was under the impression it came with a bootloader though?
Not necessarily, if you haven't updated the firmware before then that would be something I would check. From the link you posted, I can't see anywhere that mentions it has a bootloader on that page.
Multiple forums state it has. Might be a dumb question, but how do I check if it does?
I don't actually know on that one, other than updating firmware doesn't work. Someone else might.... hoping they jump in!
I'll see if I can figure this stuff out tomorrow, thanks for your time!
I recently pluged in my Pi3 to the usb port on my Brand New Ender 3 V2 and it communicated well. I then tried turning off the printer and the display remained on. I figured out by disconnecting the usb cable from the Pi eventually turned the screen off. Once I tried turning the Printer back on I got nothing, except a backlit display not showing anything and the fans. Looks like it killed my printer.
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It may have not killed your printer. Can you try :
1 - Unplug everything, the Pi, the USB cable and the Power cable from the printer, remove the SDCard
2 - Use the power button from the printer, turn in on then off, a few times, waiting 5 second before each move
Discharging capacitors may help to completely reset your printer. Hopefully that'll change your current status ?
Thanks Koreth. Tried it as you recommended without any change
Hi, Ive bought My ender 3pro v2 in agust and was able to teg really cheap this creality cloud box and received it today. Wanted to test it, it is not seeing any printer, checked on 3 cables, tried to connect to pc, completly nothing. Im on Marlin. It looks like it is just not working
Hey @Lord_Ader
This is the OctoPrint community forum, we have no idea about the Creality WiFi box product. You might find some help from their support (or I think the have a forum too somewhere)