KINGPRINT New Smoothieware Controller Board SKR V1.1 32bit Controller Panel Board for 3D Printer

The only thing that kept us from getting a five star review was the crappy ST card that they sent with it that did not workOk, bought this on a whim. Just as cheap as some of the 8bit boards out there. So I thought why not, I have all the drivers heaters enter misters that I needed so I decided to buy one The card that they sent with it was garbage. Could not use it. On a windows pc, a Mac and a raspberry pi, all said it needed to be formatted and it would fail every time. So I grabbed a spare I had laying around that was 8 gig. Reformatted it and then partitioned it to have a 2 and 6gb disks. Formatted the 2gb for FAT and then loaded the Klipper 3D printer firmware on it. I also used the full graphics smart display on it( did not have to flip any connectors at all). Took some research to get everything going right. I use octoprint with Klipper and is is working great. Before this upgrade I had the trigorilla board in my Delta printer. Add about 40 to 45 mm a second it printed OK you would any past that and it didn’t print very well a lot of stuttering and just looked terrible. I did a test this morning before going to work on a piece of I had printed and started off at 90 mm a second and it printed out perfectly

Upgrading to a 32 bit processor is a massive step in the right direction when compared to the typical under-powered 8 bit Arduino (ie: leaning tower of RAMPS) or the more convenient single board RAMPS compatible controllers (KFB, MKS, etc.). While the 8 bit solutions struggle to maintain feed rates when any attached stepper motor drivers have micro-step rates of 16 or more the fast 32 bit ARM processor on this board does not.The two boards I own operate flawlessly using Smoothieware with stepper motor controllers set to 16 or 32 micro steps on a bench top CNC router. They work as well as can be expected running Marlin 2.0 with stepper controllers set to 16 or 32 micro steps on a rotary engraver, small CNC router, and two 3D printers. Marlin developers seem to have overcome previous issues in their migration to 32 bits but everything seems to cut or print better using Smoothieware. I've had no issues using two brands of LCD12864 controllers, didn't have to modify cables, and their onboard SDcard slots are supported.The addition of a SDcard adapter allows the use of full side cards and convenient remote mouting of the adapter for easy access.Update: Awesome prints at 2519.68 steps/mm (32X microstepping) on 1/2-10 ACME with real anti-backlash nuts on all three axis - resolution that isn't possible (at least during prior attempts) with 8 bit controllers.Note: Inputs to analog I/O pins are limited to 3.3 VDC and the digital I/O pins can accept up to 5.0 VDC (but only while the CPU is under power). This becomes an issue if you are using optical or inductive proximity sensors for limit switches/end stops connected to 12-24VDC powering the board. The end stop inputs are digital pins. A level converter would be necessary to interface the high voltage outputs of some devices to the low voltage inputs and can be as simple as a LM7805 5 volt regulator in series between the sensor outputs and end stop inputs. The inductive proximity sensors are more accurate when supplied with higher voltages and any attempts to power them directly from the 5V provided at the end stop inputs will probably not produce the results (accuracy/repeatability) that you expect.

The board I received seems to be DOA. Plugged it into my computer and got a messages that the USB device that was plugged in requires more power than the USB port can supply.I tried switching the 5v jumper to "usb" with the same result. After I get the USB port error message, I have to reboot my computer to get the USB ports functional again.Tried connecting an external 12V power supply and still no luck. Red power LED comes on, but that's it.I have used several cheap 3d printer controller boards and this one is the first to not work at all.Sending this back.

I had to search pretty deep in the instructions for the data about jumper settings for stepper drivers. This should be called out earlier in the setup instructions. Aside from this, the board worked out of the box, my old RAMPS display worked with no problems and my A4988 and 2208 stepper drivers worked with no issues.

Review Edit: I initially thought this board was dead out of the packaging because it wouldn't power up when I plugged it straight into the computer. I did some research and found that these boards have a jumper that can be set to either external 5v power or USB power. As soon as I moved the jumper to USB power it worked. I am going to work on installing this board, so I need some more time with this board to give a proper review.

This is an amazing control board for a 3d printer. It has everything you need and then some. It takes a little bit of work to compile. You can run Marlin 2.0 or Smoothieware. Easy to update firmware as you only need to throw it on the SD card and power it up.

Not the easiest board to work with. I would not recommend this to someone that has not compiled Marlin before. Also there are some issues with the RepRap Discount full graphics LCD controller. I would not recommend this board if you have one of those. Otherwise it is a cheap way to upgrade to a 32-bit arm processor.

I tried several attempts to get this board to give me anything. I could load onto it from the usb. But when hooked up to 12v it would do a thing. Researched and exhausted I gave up.