LitePlacer.com forums

It's been a while since my last update, so I wanted to give you an idea of what I've been up to. I've been iterating through a number of different versions. One of my goals is to have a single set of injection molds that can be used for all the different tape widths. My idea is to use spacers of dif...

The more I think about it, the less I think we even need to have that grid in the rails. Assuming we use QR codes, maybe fiducials and auto setup in software. Can you provide more information about why you don't like the alignment slots? I'm liking the slots, as then I don't have to rely on QR code...

Here is a system I've come up with to position the modules precisely when you add them back in: Bottom Positioning.PNG This is an image from the bottom, and is using a modified version of Malte's rail suggestion. You can see that one side of the feeder has longer tabs than the other. The long tab wi...

I guess you are talking about this one: http://www.nozzles4smt.com/STRIPFEEDERS-mod-Ver-2-Series_c_135.html They are ridiculously expensive Yes, that's the one. The other option would be to include the pin in the top rail - I think you had that in one of your earlier designs. The tricky part is des...

But everything you really need to know is that the outline dimensions of all JEDEC matrix trays are 12.7 x 5.35 inches (322.6 x 136mm). Low profile trays have a thickness of 0.25-inch (6.35mm). Currently I have it at 134 mm, which provides a little buffer. So if the feeders were more about 15-20 mm...

Thanks Malte, Yes, I have seen your feeders. I liked the way you used pins to hold modules in place, but wasn't sure how to make that work with injection molded parts. Your idea of clamps gives me an idea that I'll draw in CAD later today. I think I can make clamps that can be injection molded, and ...

I'd like to start a conversation about tape strip holders. I have been working on 3D printed holders and have just released the files: https://www.youmagine.com/designs/smd-tape-strip-holder-8mm-12mm-16mm-24mm . You can also find the discussion on the OpenPnP forum here: https://groups.google.com/fo...

The TMC223 utilize sensor-less stall detection, lost step detection and limit-switch-less homing and has a very versatile current speed and acceleration management. Using these on my prototype head assembly I have come to the conclusion that, if you intend to use stall-detection to "measure&qu...