Electronics Forum | Mon Jul 26 17:57:50 EDT 2021 | cyber_wolf
Place a label and etch that instead of the PCB. Too many variances in solder mask
Electronics Forum | Thu Jun 03 17:29:21 EDT 2021 | emeto
From what I figured, machine is as good as the understanding we have about it. I have heard people complaining about machines I know for a fact are great. Manuals and training are there with a reason. There is no universal recipe for anything out the
Electronics Forum | Thu Jun 03 12:41:49 EDT 2021 | k_moore
Hello people. We have a Nutek LMC-S3 laser etcher that we use for etching 2D datamatrix codes onto our PCBs. The system has been in use for some time, but seems to constantly need tweaking to get reliable results. There are a lot of variables that
Electronics Forum | Fri Jun 04 11:32:50 EDT 2021 | stephendo
What about the bar code reader? The ability of them vary a lot. One machine had problems reading clearly printed barcodes. But after new software it would read them well. And later we got boards with the datamatrix barcodes silk screened on. They we
Electronics Forum | Mon Jul 26 20:40:48 EDT 2021 | stephendo
Software makes a huge difference. Try a different barcode reader app and see if you can find a better one. With data matrix the bar code can be mostly a bunch of blobs as long as the outside is reasonable good. Then the reader only needs a few pixels
Electronics Forum | Mon Jul 26 12:04:57 EDT 2021 | proceng1
Are you using a regular barcode scanner, or a smartphone app? When I print QR style codes on labels, I often use my phone to verify the print, but I've found that sometimes, especially when I print very small, or a very dense barcode, my phone won't
Electronics Forum | Tue Jul 13 16:43:06 EDT 2021 | jseewald
Is the variation between markings human-detectable, or does the issue only crop up when you use a scanner? Different scanners can definitely have different results. Try a few models, and make sure you aren't using any damaged scanners. When you se
Electronics Forum | Wed Dec 11 10:43:19 EST 2002 | davef
The lead in pencils is banned by the Euroland No-Lead Imperative
Electronics Forum | Wed Dec 11 11:11:59 EST 2002 | Randy Villeneuve
Lead in pencils is conductive, so if dust or lead particals were to break off (which they could easily do) this could cause shorts on the board, etc. Its common practice not to use lead pencils in electronics manufacturing.
Electronics Forum | Wed Dec 11 14:45:56 EST 2002 | Stephen
The "lead" in pencils is no longer lead. (not for several decades) It's graphite. And it is very conductive. I found out the hard way in high school science class.
