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  • Showing only topics with the tag "electronics". Back to normal view
    1. I am currently decluttering, and I have boxes upon boxes of accumulated tech stuff (for lack of a better term). USB cables, dongles, flash drives, cameras, MP3 players, phones, installation discs,...

      I am currently decluttering, and I have boxes upon boxes of accumulated tech stuff (for lack of a better term). USB cables, dongles, flash drives, cameras, MP3 players, phones, installation discs, etc.

      It's a giant mess that I want to be rid of, I just don't know the best way to go about it and thus have some questions:

      1. What's my best course of action: Is "electronics recycling" the way to go? Should I sort it and donate the useful stuff to a thrift store? Would local mom-and-pop computer shops potentially be interested in some of it?

      (Note: I have no interest in extracting money from the hoard and would be happy for the useful stuff in there to go to a "good home" that can take advantage of it.)

      1. Is there anything that's simply not worth donating/recycling? Should I simply throw some older stuff (e.g. floppies, component cables, anything with a parallel port) out, or does recycling somehow reconstitute the metals/resources in them?

      2. I have several dead hard drives and flash drives that have personal information on them that I was never able to wipe. Should I just hold onto these indefinitely since someone could use them maliciously, or is the likelihood of that happening close to nil?

      18 votes
    2. Album link So we have had this popcorn machine for ages and just recently it completely stopped working. Being a fan of bigclive on youtube I though why not try fix it and maybe get a sense of how...

      Album link

      So we have had this popcorn machine for ages and just recently it completely stopped working. Being a fan of bigclive on youtube I though why not try fix it and maybe get a sense of how it works.

      The guts

      The insides honestly are pretty underwhelming - both the impeller and heating elements are quite small considering it only takes a few minutes to make a bowl of popcorn.

      Circuit board and Another shot

      Considering how few components there it was not too time-consuming to draw up a diagram. Please excuse the crude drawing.

      From what I can tell it uses a bridge rectifier with a some caps to convert DC and even out the signal - and what looks like two resistors to further drop the voltage to the motor, maybe two offered better cooling? idk why they didn't use one. It's also kind of interesting how they used two separate coils for the heating with one of them in series with the motor, that will drop the voltage right?

      They also have overheating protection here, with a an sefuse and a thermo switch, it actually has the piece of metal and a contact that will bend away when it's hot, I've only seen these in a textbook. Not sure why there are two types of thermo fuses?

      The fault

      Finding the fault ended up being quite easy, the main heating coil that comes off blue wire had melted. A piece of corn, oil, bits of salt or a mixture had found their way in and somehow melted the wire in multiple places. It cut the circuit so not even the motor was working which was my initial though when it stopped. I wound some solid core wire around the two ends, hopefully it will not unfurl or melt in the heat.

      12 votes
    3. To summarize, I am annoyed that there are two different standard for 4-pole audio connectors. For those curious I mean this. You have OMTP and CTIA, the difference is they swap the mic and ground...

      To summarize, I am annoyed that there are two different standard for 4-pole audio connectors. For those curious I mean this.

      You have OMTP and CTIA, the difference is they swap the mic and ground pins. This is irritating because Apple vs Android use them differently. This becomes especially annoying when you want a feature like an inline mic mute switch (one designed for CTIA for example will disconnect the ground pin on OMTP instead of mic)

      This has been an ongoing frustration for me for a while. I really enjoy a good pair of headphones because I use Discord and I work from home which necessitates using headphones for extended periods of time to listen to music, take calls, chat on discord.

      I just want there to be a device that does OMTP/CTIA swapping AND include the ability to physically mute the mic. Like this but with something that will break the mic pin. Im currently designing something in fritzing that will allow both direction switching as well as selective muting.

      /rant

      Has anyone else had any similar experience or frustration with this problem?

      4 votes