Printer Enclosure.

[BillTodd]

There doesn't seem to be much thought gone into preventing plugging accidents with these cheap boards. They seem happy to mix voltages on bare unprotected pins 3v3 next to 5v, next to 24+

Be very careful of the octopus's fan selection pins !  5,12,24 on an array of pins just waiting to bite. Even accidentally dropped objects like nuts or washers can be expensive.

[shipto]

Ok so I am back on track and working through the firmware although I have had to backtrack on one or two things and getting the wifi up and running is giving me big headaches but that can wait till later so its disabled for now.

[shipto]

  Now we are talking 
I drew up some stops and they are both working great. The X axis however can only hit the switch after the Y axis has homed so thats been done via the firmware and I hope that doesn't cause any issues in the future but I can only think it will if it skips steps?
The X axis is operated via a sprung bolt carried by the Y axis and I will have to redraw/reprint that side to include a neater hole for it.
The bit I am most pleased about is the 3dtouch probe I thought it was malfunctioning at first because it was always showing triggered which I thought was wrong but it works fine. Even the auto bed levelling is working which was a shock because afterwards I realised I had not set up the 3 steppers in the order shown on the firmware but it didn't matter it sorted itself out.

[BillTodd]

Great stuff 8-)

If you're running trinamic drivers, they can  be configured to fault on stall (as used on sensorless homing) so that crashing in to a hard stop is not a drama.

I initially used sensorless homing on my corexy but since both motors are moving cfor x and y moves it caused occasional homing faults so ive had to ad switches?

Bill

[shipto]

Actually scratch the bed leveling bit I switched the screen to marlin mode which told me it was getting worse after 5 tries. you would think the touch screen mode would let you know somehow 
Shouldn't be too hard to get working properly now its going through the motions though.

[shipto]

So went back into the firmware and put in some more accurate numbers and after 2 iterations marlin reports that its all good 

[shipto]

Paid a visit to my local metal suppliers today and got them to cut me some 310x310x4 aluminium and now have the silicon heat pad stuck on and the bed ready for the glass surface.
Jobs left to do:
tidy wiring especially the heat bed wiring including fitting an earth to the bed as its a 240v ac pad.
work out how I am going to mount 3 reels of filament, probably going to be mounted on the door if I can figure out a kink free pathway.
work out how to arrange the wiring thats going to the extruder, 3d touch etc so it wont foul up in the gantries.
get some longer wires so I can mount the lcd at the front of the printer.
plus probably a few others I haven't thought of yet.

[shipto]

I am now looking at the hotend etc part of the build. I currently have the touch probe and the hotend in position but the cooling for the hotend and the part cooling is going to take some serious thinking. The hotend kit came with a 40mm fan but I think I will change this for a 30mm fan so I can use some really thin sheet to make the mount that will direct the air past the cooling fins and out through the back so it wont interfere with the print too much. I am hoping I can construct something that will be held in place by the two screws that hold the heater block in and the push fitting at the top.

[shipto]

After a bit of amateurish sheet bashing I have a slightly lop sided but functional cooling fan mount. I apologize to any professional tin bashers out there but I did the best I could with the equipment to hand 

[shipto]

Not finished by any means but I have mounted the extruder (For some reason Marlin ignored the new steps per mm I entered so I had to enter it into the lcd and save it to eeprom) and it has laid down some filament.
I was running out of time because daughter was badgering me to take her home  so I just looked through my old files and found a trolley token, I am quite pleased with the result you can even see it is supposed to have a trolley on it which is already better than my I3 clone did.
I have to say those TMC2008 stepsticks make it so quiet that the fan seems really loud.

[BillTodd]

  always good to see the first print

[shipto]

I have started it printing its own parts and first off to get some of the shapes I am going to print I figured it needed a part cooling fan, so I designed a simple one that I actually think with a little modification wont be a bad for a permanent solution. My filament looks like its starting to collect too much moisture so I will have to chuck it in the dryer tomorrow.
Another plus is I am slowly learning the ins and outs of Marlin firmware, Although I may end up with a bald patch from all the head scratching