Electronics > Projects, Designs, and Technical Stuff
EMF pickup from amplifier in I2C line causing glitches. (Now with scope trace!)
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engineer_in_shorts:
Just astounded at the lack of self awareness found some other posts of the OP to find some schematics/layout :
https://www.eevblog.com/forum/profile/?u=101656;area=showposts;start=225

Would like to know what commercial products he has made.
janoc:

--- Quote from: engineer_in_shorts on July 14, 2016, 11:42:33 am ---Just astounded at the lack of self awareness found some other posts of the OP to find some schematics/layout :
https://www.eevblog.com/forum/profile/?u=101656;area=showposts;start=225

Would like to know what commercial products he has made.


--- End quote ---

I am actually curious as well because reading that the repeating pattern seems to be - "I have dug myself into a hole, I can't afford/don't know how/lack the means to climb out of it, does anyone have any other suggestion how to get out?"

On the other hand, it is certainly a good learning experience, albeit a tad expensive, IMO. But who am I to criticize, I am not designing stuff for sale myself.

engineer_in_shorts:
Ha, just noticed that Starlord has started deleting his old post in the last few hours:
https://www.eevblog.com/forum/projects/customer-w-unrealistic-expectations-what-would-you-have-charged-for-this-job/msg549472/#msg549472
Starlord:

--- Quote from: engineer_in_shorts on July 14, 2016, 11:42:33 am ---Just astounded at the lack of self awareness found some other posts of the OP to find some schematics/layout :
https://www.eevblog.com/forum/profile/?u=101656;area=showposts;start=225

Would like to know what commercial products he has made.

--- End quote ---

Well thanks to you I just had to go through my entire history and delete every schematic and post with potentially identifying information because you want to initiate a witch-hunt.  Guess nobody's going to be able to learn from my mistakes now.  Good job.

I'll tell you who I am.  I'm nobody.  I don't sell "commercial products" in the sense you're thinking of.  I don't work for any big business designing things for them.  I sell stuff in small quantities mostly to hobbyists.  Hobbyists who will be prototyping circuits on breadboards and covering the airwaves with noise of all kinds.  Why don't you take your anger out on Sparkfun or Adafruit, who encourage people to experiment with electronics and thus ruin your CB radio fun?  Or how about Dave himself who also encourages people to experiment by teaching them, or 90% of the people on this forum who are also hobbyists and don't have EMC testing equipment and are also wreaking havoc on the airwaves? 

Or do those hobbyists not count because they're not making money?  It's funny how the moment I mentioned I'm trying to make a meager, VERY MEAGER, living at this all the hate began to spew forth.  Nobody cared when they thought I was just doing it for myself.

Do you know why I pushed back against making changes to my circuit?  BECAUSE I CAN'T AFFORD TO SPEND ANY MORE TIME ON IT.  I'll be lucky to pay my rent next month after I manufacture a handful of these things.  And that handful will only be HALF as many as I'm obligated to produce.  What the hell do you want me to do?  Give the people that pre-ordered these things nothing?   I'm sure that will do wonders for my reputation.  And I sure as hell can't give them refunds.

I'm sorry you don't think I'm wealthy enough to be allowed in your little club because I can't afford thousands of dollars to get EMC testing equipment or have the FCC do it for me.  I assure you though that if my business ever does grow, I'll do things right, if only because at that point I will actually have something to lose. Right now, I have nothing to lose except my shirt. Which I'm about to lose anyway.

Do you think LadyAda did any EMC testing when she was starting Adafruit?  Or whoever the Sparkfun people were?  Hell, I wouldn't even be in this hobby were it not for some italian guys who invented the Arduino, and do you think THEY did any EMC testing on their boards when they got started?  Massimo doesn't even hold an engineering degree.  But me?  By all means, hold a guy with $2K left to his name manufacturing a handful of boards to a higher standard.

Sorry I care more about putting food on the table than a one in a billion chance of a toy that will be used twice a year interfering with some trucker using a technology that's 30 years out of date to chit chat.

Maybe if you care so much about EMC compliance you should have spent all the time you spent arguing with me instead explaining how I could make my circuits more compliant without breaking the bank.  All you've managed to accomplish instead is teaching me that when I am inevitably forced to create a new account and burn the old one, to never EVER mention I plan to make any money or sell anything to anyone.

PS: There's thousands of people on Youtube posting their non-EMC compliant electronics projects.  Lots of people designing guitar pedals and amps without any real knowledge of electronics at all, and selling them.  Why don't you head on over there and tell them all what terrible people they are for trying to learn and start a business at the same time, like me.
tggzzz:

--- Quote from: Starlord on July 14, 2016, 12:49:22 pm ---
--- Quote from: engineer_in_shorts on July 14, 2016, 11:42:33 am ---Just astounded at the lack of self awareness found some other posts of the OP to find some schematics/layout :
https://www.eevblog.com/forum/profile/?u=101656;area=showposts;start=225

Would like to know what commercial products he has made.

--- End quote ---

Well thanks to you I just had to go through my entire history and delete every schematic and post with potentially identifying information because you want to initiate a witch-hunt. 

--- End quote ---

Very revealing. More revealing than the schematics etc.
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