BIGTREETECH-OCTOPUS-V1.0 VS SKR-Pico

It is strange though that the firmware I've built has a size of 28kb, while the one you can download from the BTT repo is only 23kb. Both can be flashed, but neither of them seems to work.

https://github.com/bigtreetech/BIGTREETECH-OCTOPUS-V1.0/tree/master/Hardware/BIGTREETECH Octopus - PIN.pdf

just checking, have you tried the precompiled firmware from bigtreetech? https://github.com/bigtreetech/BIGTREETECH-OCTOPUS-V1.0/tree/master/Firmware

I have a 4.7kΩ pull up resistor soldered between 24VDC and PB7 (probe pin) on my board. This is detailed on page 11 of the user manual here (github).

See the manual for that board here which outlines the different jumper configurations

I followed this wiring pinout and wired my neopixels following this: https://imgur.com/a/TtQbZPe. They are not currently working. The pin referenced on the pinout in the picture references the PB0 pin on the Octopus board as seen here: https://github.com/bigtreetech/BIGTREETECH-OCTOPUS-V1.0/blob/master/BIGTREETECH_Octopus_EN_updated_0719.pdf

With care and patience you can do it with a good quality soldering iron. You'll need solder wick to remove the old solder and good flux to fit replacement parts. You can use ordinary electronics grade tin/lead slder for the replacements; it's easier to use than lead-free, which is only mandated for commercial products for sale. As usual for BTT products, the schematic and other documentation are on BigTreeTech's github, https://github.com/bigtreetech/BIGTREETECH-OCTOPUS-V1.0/tree/master/Hardware

That's a question outside my scope of knowledge. I can tell you that it's a microcontroller used to control a 3D printer. There are 5 NEMA 17 stepper motors, a hot end for melting and extruding the filament (around 200 Celsius) and the build plate is heated (60 - 70 Celsius). Here is a link to the manufacturer's GitHub if you're interested in checking it out: https://github.com/bigtreetech/SKR-Pico/tree/master/Hardware

https://github.com/bigtreetech/SKR-Pico/blob/master/Klipper/Images/wiring_uart.png they have the wires backwards.... I see a lot of things like that. That's just different from what is shipped. Forget about the fact that the wire is plugged in backwards, what is shipped to the customer is two reds, a black, one green and one yellow. There is no blue. That's what I feel like right now: I'm following instructions/directions with a blue wire and there was no blue wire in the box...

I have a sonic pad that I have working on one printer that uses an aquila motherboard so I know the sonic pad works. I just got an SKR Pico and installed it in a different printer. I flashed the firmware and with klipper-USB.uf2 from https://github.com/bigtreetech/SKR-Pico/blob/master/Klipper/README.md

Did you go through the steps here for building the firmware? https://github.com/bigtreetech/SKR-Pico/blob/master/Klipper/README.md

The SKR-Pico is very well-documented on the BigTreeTech github page

I'm looking around for specs on maximum power/current draw for the SKR Pico run at 24V. Unfortunately, the documentation is pretty slim (link to BTT Github for SKR Pico), only mentioning 0.8A draw on the stepper drivers without additional cooling in the user manual. I'm concerned that the board may not be capable of pulling enough power for my Gulf Coast Robotics heated bed, which lists a rating of 250W @ 24V (nearly 10.5A). I also have a Mosquito hot end, which lists a 50W heater, plus the motors drawing a total of over 40W, so I'm likely pulling over 350W, with running my SKR Pico, Pi Zero 2W, and touchscreen off the same PSU. (Pi and touchscreen were powered via UART cable off the Pico.)

Switching over your config should be pretty straightforward, you'll just be changing the [mcu] section (obviously) and all the pin assignments. BigTreeTech boards are really well-documented and both the SKR-Mini and the SKR-Pico include excellent pinouts and schematics as well as sample Klipper configs on their github pages.

Has anyone powered that board (Le Potato AML-S905X-CC-V1.0-A) by applying +5vdc to GPIO pins #2 and #4 (and ground to pin #6) as described by BTT here or page 10 of the BTT Octopus manual here?