| Electronics > Beginners |
| Pulling my hair out. Circuit boards stop working once shipped to client and more |
| << < (19/21) > >> |
| free_electron:
--- Quote from: Jackster on July 01, 2019, 07:16:38 pm --- --- Quote from: free_electron on July 01, 2019, 06:49:48 pm ---Arduino is not exactly a case of 'proper' design. They take too many shortcuts. That aside , what else is on your board. Anything drawing pulsed currents like muxed displays , rf transmitters etc ? --- End quote --- Yea I have 4-8 seven segments displays and a nrf24l01. --- End quote --- That would be one possibility. muxed displays draw peak currents. Any kind of noise on your power rail and the cpu may brown out. Same for RF transmitters. it looks like you have those mounted above the cpu ... |
| Ysjoelfir:
--- Quote from: Jackster on July 01, 2019, 04:03:44 pm ---I know there are a few other things that are not correct but we will see if they need fixing. --- End quote --- I have to admit that I am slightly furious after reading this phrase. If there is something wrong with your design and you know it but decide to go like "nah, isn't that bad, people buying this won't notice!" you are up for a very bad suprise. Reputation is slowly getting more important again, after years of cheap electronics that fail just after warranty ends because of obvious* design flaws that are not corrected because of cost and "well, it works NOW, why should I care if it works in 3 years?" - mentality. * or intentionally created |
| Jackster:
eMail from PCBway --- Quote ---Thanks for your information, I checked that your order BATCH3 is with the same pad design and the production file of it is with smaller pads as your design. The difference is that order BATCH3 and BATCH2 produced at different production line, and it need different way to prepare production file. --- End quote --- |
| bd139:
So they fucked up basically |
| Rerouter:
Fun to know to avoid them, Another agreeing that the default arduino layout is not always the best, but the software librarys can be used in commercial systems without issue. provided you review the code, and test the crap out of it. There are about 1000 arduino based card readers of my creation floating out in the wild in some of the worst electrical and environmental conditions you can imagine, and yet have not had a single lock up and only 2 replacements due to vehicles being submerged in flood waters. Because at the end of the day, arduino code is just AVR code for most things, If you make sure everything checks out, then your sweet (verbose output for compilation is a good way to catch potential issues early) |
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