General > General Technical Chat
Ever been so mad at a project you wanted to just smash it into the concrete?
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helius:
Super Corona Dope for high tension wires or points, 10kV and up. Long ago I used it on a voltage multiplier for a nitrogen laser.
Zero999:
Yes, but it's people, often managers who make be feel this way. Quite a few times, I've had to walk away, then rant about how much of an expletive a certain person is. Politics, egos and power trips are the main problems I encounter. I find it infuriating. |O
jmelson:
I had my first pick and place machine up and running in one week, making boards.  I had a lot to learn about the process.
After 13 years, that machine was not accurate enough for the stuff I was doing, it had some 0.5mm lead pitch flat packs and SSOP parts that were not placed precisely enough.  So, I decided to upgrade.  I bought a Quad QSA30A from an auction for the starting bid ($500.)  What I didn't know was that it had been sitting in hot humid space for SIX years after monkeys had messed with it.  The heat/humidity soak caused a LOT of failures of components shortly after I got it installed. I spent WAYYY too much time trying to debug those issues, then I found this model had large parts commonality with a very popular Samsung model so parts are readily available cheap from the far East.  The other thing I found out was that the manuals are AWFUL, some of the worst I have ever seen.  It is just a guide through the GUI pages with VERY little info on how various parameters interact, etc.  I was totally tearing my hair out.  Crazy stuff like they don't even tell you how the board coordinate system works.  +Y is to the rear of the machine, but plus X is to the LEFT!  However, the machine coordinates have +X to the right, as is normal.  Completely crazy!  It does make a tiny bit of sense, as the conveyor stop is at the lower right corner of the board, so coordinates grow from there.  Fortunately, another user put me in touch with the guy who did factory training at Quad.  He straightened me out on a lot of these issues.  But, at one point I was REALLY ready to chop the machine into little pieces.
Jon
EEVblog:


TERRA Operative:

--- Quote from: jmelson on May 28, 2023, 11:55:48 pm ---I had my first pick and place machine up and running in one week, making boards.  I had a lot to learn about the process.
After 13 years, that machine was not accurate enough for the stuff I was doing, it had some 0.5mm lead pitch flat packs and SSOP parts that were not placed precisely enough.  So, I decided to upgrade.  I bought a Quad QSA30A from an auction for the starting bid ($500.)  What I didn't know was that it had been sitting in hot humid space for SIX years after monkeys had messed with it.  The heat/humidity soak caused a LOT of failures of components shortly after I got it installed. I spent WAYYY too much time trying to debug those issues, then I found this model had large parts commonality with a very popular Samsung model so parts are readily available cheap from the far East.  The other thing I found out was that the manuals are AWFUL, some of the worst I have ever seen.  It is just a guide through the GUI pages with VERY little info on how various parameters interact, etc.  I was totally tearing my hair out.  Crazy stuff like they don't even tell you how the board coordinate system works.  +Y is to the rear of the machine, but plus X is to the LEFT!  However, the machine coordinates have +X to the right, as is normal.  Completely crazy!  It does make a tiny bit of sense, as the conveyor stop is at the lower right corner of the board, so coordinates grow from there.  Fortunately, another user put me in touch with the guy who did factory training at Quad.  He straightened me out on a lot of these issues.  But, at one point I was REALLY ready to chop the machine into little pieces.
Jon

--- End quote ---

Maybe you now know why it was sitting unused for six years.... :-DD
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