I would most definitely interested in purchasing an upgrade “kit” that includes all non-printed parts needed to upgrade from the Mini to the Mini 2, in addition to a guide on OHAI to complete the conversion. I already have (and am pleased with) the Aerostruder installed an working.
While I am by no means a neophyte in regards to the Mini, and I have electronics experience, coding and mechanical ability, I am a bit daunted to attempt this just using only the Mini 2 assembly guide.
As I write, I am downloading parts for the Mini 2 and will commence printing them. I have some Lulzbot green PLA to print the appropriate parts in, and see no real need for the LCD display, as I use Octoprint to allow for the printer to be in another room, and remote printing.
Any advise or additional information would be greatly appreciated.
Just keep in mind that PLA can go soft from the machines own heat if you print in an enclosure or leave it in a car or warm place. It’s really not an ideal material to make printer parts from.
It looks like there’s a lot of logic tying sensorless homing with Z to the same with XY. It does not like breaking those out into separate things. Since I don’t have enough pins to do all of the endstops on the new board (well, if I want to have all three fans), it looks like I’m might have to do at least some of the Z hardware changes in order to make this work. Hmmm.
I found space for all 3 fans and all the homing switches by stealing a 5v pin from the LCD connector since my Mini 1 doesn’t have a screen. I’m following with great anticipation because I’ve got the hardware swapped over and I can get everything to move (nearly) silently, but not everything works the way it should.
Ooh, good plan! Can you send a photo of your board? What’s not working with your setup?
Yes I can snap a picture of the board tonight. I’m going to switch it back until someone works out the firmware issues because I can’t seem to get it sorted. The axis directions were all backwards (easy fix), the end stops are set to NC instead of NO (easy fix), the major hurdle for me has been getting the Z axis to understand its screw driven not belt driven. Nothing I’ve tried in Marlin seems to stick
It sure does work with a 24v system, shouldn’t have any issues there! We have not tested this with 12v systems, but it is unlikely the board will be successful there without modification.
If you are interested in doing the full upgrade, I highly recommend popping into this thread and seeing what else may be required: Mini 1 to 2 Conversion