I love you :)
I'm a little confused by your pictures. I would think the pictures are oriented as you would be looking at the bed with the bottom of the picture being the bed as it is closest to you. Some of your pictures have the X stop at the top and some on the left. I'm new to 3D printing so maybe this isn't the case. Wouldn't the X stop be on the left and Y at the top? I'm having problems centering after upgrading to Skynet. Just trying to make sense of it all.
reason I write on it "X stop/Ystop" so it doesn't matter if you (i did in this case) accidentally spin the plate, you can always know which direction the X and Y home to ...yes, when in the printer, and normal the Y is back and the X is left... (PS, how'd you get to this site/page? everything and all links should be over to the 3Dprintingllama site. did I miss a posted link somewhere?. http://3dprintingllama.blogspot.com/2017/04/centering-on-your-bed.html)
The power of Google. I have been Googling trying to fix my issue on my Anet A8 after updating firmware to Skynet. When I send a print job it tries to print at the upper left corner. Not even on the bed. I've watched a bunch of videos but they don't always explain how they got the values in their gcode or Configuration H settings.
I'm still a little confused though. I thought the X_Max_POS is the size of your printbed and X_MIN_POS is how far away from 0,0 you want it to home to. I though you tell it where to start printing in the gcode.
sorta ya... like with mine the Y home is 15mm or so past the bed. I like that way so ozze isnt stuck on the bed. so by adding the -15 the printer/firmware know the bed starts at zero, and still goes all the way to 200 which is the other side of the bed. you don't have to make it 215. Note, you also have to tell your slicer the bed size (not the negitive offset though, just zero to 200 or what ever)
According what I found (See Below) you can configure your bed area in firmware by using _MAX and home position using _MIN or by specifying it in the slicer software start gcode. I'm guessing software start gcode wins because it is read last when you print. And it is determining the center base on the home position?"Configure correct bed *area* in firmware, compensate with origin offset in Slicer. (Less correct)Same Configuration.h as Method 2, however the slicer bed shape is configured with a Bed Size of 200,170 and an Origin of -45,-35. I don't like this solution as the printer itself doesn't "know" where it's own printable area is, and relies on the slicer to sort things out." from http://reprap.org/wiki/Configuring_Marlin_Bed_Dimensions
if you read that full page - you're going off/quoting "method 3" which is the least accurate.. I'm basically going off "method 1" which is the most correct. ;) you want the firmware to know exactly where the printable area is. that way no matter what you'll end up printing on the bed, even if off center. then you tell the slicer what size that printable area is and it'll always hit spot on center (as long as you center the item in the printable area in the slicer)
I agree method three is least accurate, but most Youtube videos seem to show method three which has led to my confusion. Before I updated to Skynet I was using Octoprint and Cura as my slicer and it just worked. Almost all the Skynet videos have shown method three, but didn't explain why they were doing it that way. After upgrading to Skynet my printer was almost non-functional and now I'm having to put the pieces together to fix it.
isn't Skynet just a movie? get rid of it ;)
ah, ya this has been up a lot longer.. just trying to get everything under one name now, youtube videos as well as these blog posts.. 3D printing experience is kinda over used and miss leading now.. reason going to 3D printing Llama. ;) another place to look is Tom Sanladerer on youtube, where I got 90% of my info from when I started..
Is there a way to do this on the stock firmware? Everything I've seen assumes an update to Skynet, but without using a auto-level sensor, I'm not seeing an advantage to Skynet.
This is with stock firmware, never used skynet.. not a clue what it is even really
Excellent instructions here. Tanks you so much. Can't wait to get home and get the print area centred on my Tronxy.Do you know how to calibrate the extruder via Arduino Ide also?
there are a lot of those around already... seach Youtube. think Tom Shcandller (sure I spelled it wrong) has the best explain of it.