Search found 407 matches

by mrandt
Wed Apr 26, 2017 5:23 pm
Forum: Ideas and Feature Requests
Topic: Board feeder/conveyor
Replies: 4
Views: 7420

Re: Board feeder/conveyor

Hello and welcome to the forum, I understand your desire to automate everything.Basically what you describe is exactly how commercial PCBA lines work; however these cost a fortune and have to be dialed-in well to work fully automated... Your plans sound quite ambitious. I seriously doubt that we wil...
by mrandt
Tue Feb 28, 2017 6:09 pm
Forum: Building the LitePlacer
Topic: Downward Camea fixed to Z-axis?
Replies: 4
Views: 3033

Re: Downward Camea fixed to Z-axis?

Hey Mart, with normal lenses the size of the projected image and thus the px to mm ratio is dependent on viewing distance. So moving the camera up and down will make optical measurements impossible with the current software. Also, you may run into problems with focus; as the camera is only sharp for...
by mrandt
Thu Feb 16, 2017 11:43 am
Forum: Building the LitePlacer
Topic: Machine crashing when homing despite stop switch
Replies: 9
Views: 4650

Re: Machine crashing when homing despite stop switch

Try moving the machine a bit further away (X+; to the right) before starting homing sequence.

For some reason in TiynG firmware, the X axis is moved slightly before homing switch gets monitored.

I got tired of figuring out why, but this might be the same problem you are seeing.
by mrandt
Sun Feb 05, 2017 3:30 pm
Forum: Ideas and Feature Requests
Topic: Tape Strip Holders
Replies: 108
Views: 234272

Re: Tape Strip Holders

Hey John, I watched your videos and learned quite a bit about adaptive clearing feature in Fusion360 - thanks for posting :-) The first half mold looks really promising. I can't wait for the second half and to seeing your first injection molded parts for the feeder. Keep up the good work! Cheers Malte
by mrandt
Sun Jan 08, 2017 10:20 pm
Forum: OpenPnP software
Topic: Openpnp
Replies: 53
Views: 269048

Re: Openpnp

Hi Sebastian, for sensing the vacuum, most absolute digital or analogue pressure sensors will work. I have experimented with MPXV6115VC6U (http://de.farnell.com/nxp/mpxv6115vc6u/drucksensor-115-bis-0kpa-sop-8/dp/2102574) and MPX5100AP (http://de.farnell.com/nxp/mpx5100ap/sensor-abs-press-16-68-psi/d...
by mrandt
Fri Jan 06, 2017 7:46 pm
Forum: LitePlacer Software
Topic: Unable to place 01005 :-(
Replies: 5
Views: 4587

Re: Unable to place 01005 :-(

that I now have pickup consistency across the table Very good; nozzle runout / wobble calibration seemed the most logical cause here - so nice you got that fixed. I do have some vertical offset between the PCB plane and the pickup plane I also considered fixing this in software, but than you would ...
by mrandt
Wed Jan 04, 2017 4:59 pm
Forum: OpenPnP software
Topic: Openpnp
Replies: 53
Views: 269048

Re: Openpnp

Hey Jason, thanks for posting this update. I have actually been using the GCodeDriver for a while now and am rather pleased with it. It was very easy to add the commands for vacuum etc. to the configuration. Once I find the time, I will post my machine.xml here - but I guess I need to add some comme...
by mrandt
Wed Jan 04, 2017 12:57 pm
Forum: LitePlacer Software
Topic: Unable to place 01005 :-(
Replies: 5
Views: 4587

Re: Unable to place 01005 :-(

Hello Fred, happy new year to you also. I read your long post and felt sorry for the bad experience you have had. As you may have read, I am transitioning to OpenPNP - mostly for the alignment correction with table camera. If you are serious about placing 0402 and smaller, you might want to consider...
by mrandt
Mon Dec 05, 2016 10:15 pm
Forum: Ideas and Feature Requests
Topic: Tape Strip Holders
Replies: 108
Views: 234272

Re: Tape Strip Holders

There is no such thing. I just stumbled on this link http://www.ebay.com/itm/M3-x-4-5mm-Phillips-Pan-Head-Toolless-Thumb-Screws-Nickel-Plated-/201546633164?var=&hash=item2eed1d8fcc:m:mkgaZy07Syb6CDXEWfkQzwA . So they do exist. Woah. I guess one should never say never ;-) Let me put it another w...
by mrandt
Fri Dec 02, 2016 3:16 am
Forum: Ideas and Feature Requests
Topic: Tape Strip Holders
Replies: 108
Views: 234272

Re: Tape Strip Holders

Thanks Gary. I agree, that would be the perfection solution. Unfortunately I have no idea what the cost would be and which shops in Europe would do such work. I enquired with my preferred laser cutting companies and they said they could not press fit or weld threaded rods onto the plates. Similar De...