You might download the version again as 2.1.23 (updated yesterday) now has the LOW CAM button thing solved (*thumbs up* MDC).Software upgrade
: The upgrade is most of the time just the .EXE and a pair of text files with typo corrections of the constants help / description. I just overwrite the .EXE in the luna-win directory in the "Programs File" DIR on C:\ but I pay attention to keep a copy that I name with the version of the software so that I keep track of what has changed. This reminds me that I need to make a full machine backup now that I have several designs done and my constants fine tuned.Part definition column / label
: they changed along the years I think. There are still some issues in the handbook because I'm using old screen caps from MDC so it's not matching 100%. But most of the time it's because columns aren't placed exactly at the same place.
The part def as seen here http://www.ladyada.net/wiki/mdcpickandplace/qfn
is very close to what you have in the current SW. Now you have a wt (wait ?) parameter that isn't used but that's it. You had versions for which 0° placement offsets were called dx0,dy0,da0, now they are dx,dy,da but overall it's the same. I was using 2.1.16 at the very beginning but I can't remember the exact changes.Cassette feeders
: Again, for 8mm feeders, the black spool should not touch the next feeder, even if you used some thick tape. Check the spool width or better post a picture of one of your feeders. When the spool is in place it should be much wider than the feeder. What tape do you use ?cut tape feeders
: I don't know much about those but what would make sense is that the location of where to pull on the tape is set in the feeder definition as it would depend on EACH feeder slot. It's probably NOT defined in the system constants, except if it's a constant offset that is defined for classic tape width (8-12-16-24 etc) but I don't recall seeing those in the system constants.
Please post a screen cap of your feeders definition, there might be some specifics for your machine as it has the cut tape pulling mechanism (which mine doesn't).
I'll ask MDC. I can eventually add a paragraph about those in the manual.Machine speed
: Like it's been posted on the wiki, I also experience the PSU problem when trying to use the machine at normal / default speed. It's my understanding that it's due to the PSU efficiency ratio when on 110 or 220V AC compared Japan where it's 100V.
Also, I verified that it's REALLY the Y axis speed that is the issue as I could upgrade all the other axis speed (X, Z, theta). My guess is that it's happening when the Y arm is slowing down before reaching the its destination. It's so heavy and going so fast that the current required to brake it goes above a threshold or simply goes back to the PSU because the windings generate current when slowing down (despite roll off diodes and yadayada). The previous owner of the machine was sent a replacement unit (Meanwell branded) so I proceeded with the replacement, I only had to drill and tap 3 x M4 holes and matching Allen screws and now the PSU replacement doesn't require to disassemble the whole electronic panel as the screws are accessible from the front. Don't forget the thread-locking fluid.
The Y axis is now back to 2000 speed, with a rate of only 150 compared to the X axis which rate remained 100 (rate = feed = slope = acceleration - higher number = reduced acceleration hence limited capacity of reaching the max speed over a short distance).
I experimented with placing a bunch of jelly beans on double sided tape (as I didn't want to test during an actual batch of boards) : no problem at all. With the stock TDK / Lambda PSU, the problem was almost immediate, after placing a few parts and checking the fiducials on each PCB. PROBLEM SOLVED !