MKS-Robin-Nano-V3.X VS BIGTREETECH-SKR-mini-E3

And, speaking of lacking, the MKS doesn't have a dedicated port for a neopixel. However, the MKS MINI12864 V3 uses a neopixel for lightning the screen, so you could use the EXP1/EXP2 ports, or use one of the UART ports as described here: https://github.com/makerbase-mks/MKS-Robin-Nano-V3.X/issues/7

LOOK AT https://github.com/makerbase-mks/MKS-Robin-Nano-V3.X/tree/main/hardware

Robin Nano V3

Speaking of TMC drivers, you'll notice some pins beneath the spot where the TMC drivers plug in. You'll also get some jumper caps with your board. You WILL need to put some of these caps in. I didn't at first, and I found that telling the printer to move 100mm caused it to move 200mm. Here's why that happened: the printer was configured to expect the motors to use 16 microsteps. Now, let's look at the documentation on this page: https://github.com/makerbase-mks/MKS-Robin-Nano-V3.X/wiki/Drivers_MKS_TMC2209_2225_2208

Hi, I have an Anet A8 with a mks robin nano v3.1 board installed. I wired up everything, installed the provided software but the dual Z axis won't home. I tried inverting the logic of the switch on the software but it didn't work. Basically if i manually close the switch the Z axis comes down without stopping.

RRF is open source and it looks like a port for the Nano v3 might be in the works already: https://github.com/makerbase-mks/MKS-Robin-Nano-V3.X/issues/39

Last week I ugraded the mainboard to a BTT SKR mini E3 v3.0, and I just used the "firmware-USB.bin" from the GitHub page to flash that board, and I updated the pin names on the printer.cfg for my printer using the example on that same GitHub page. Everything is working well, the printer in producing good parts like it did before.

I went with this following the findings in this thread https://github.com/bigtreetech/BIGTREETECH-SKR-mini-E3/issues/658

Disconnect 2 wires and hook it up to the Z-stop. Will probe, but it hovers about 25mm off the bed even when the z axis is brought all the way to 0. It will not go to negative values. Tried both the BLtouch and BLtouch-for-z-homing firmwares from here(https://github.com/bigtreetech/BIGTREETECH-SKR-mini-E3/tree/master/firmware/V3.0/Marlin) but no luck

At this point I've narrowed it down to the Klipper firmware being sent over to the Mini and after it boots. Looking at BTT's github, it is included in Klipper now. So I used the build scripts there through KIAUH. Set up the information to send it over USB and it flashes without error. I tried with Serial USART1 PA10/PA9. From the printer.cfg

at some point, I was also trying to update the firmware. I have a BL touch installed at the same time so I tried to use the V3.0 Marlin firmware (https://github.com/bigtreetech/BIGTREETECH-SKR-mini-E3/blob/master/firmware/V3.0/Marlin/firmware-ender3-bltouch.bin). I have no idea if it ever updated the firmware as there was never anything indicating it was installing. I assume I put it on a microSD, and plug it into the motherboard right?

I recently made my first upgrade on my ender-3, a Bigtreetech SKR mini e3 v3. I also bought the official Creality CR touch and installed it onto my printer. I plugged the cable into the adequate spot on the board and unplugged the cable from the Z endstop switch. I then downloaded the firmware (firmware-ender3-bltouch-for-z-homing.bin) from this page: "https://github.com/bigtreetech/BIGTREETECH-SKR-mini-E3/tree/master/firmware/V3.0/Marlin" and uploaded it to my printer.

Pre-compiled firmware. (GH)