An IR Blaster Project, In A Nutshell

The speed that computers have gotten smaller is a bit mind-bending. Most of us now walk around with computers in our pockets that would have rivaled the supercomputers from a few decades ago. And, although it seems like the speed at which things are getting smaller and faster has slowed a bit compared to the rapid pace of the 90s and 00s, some truly minuscule computers are accessible nowadays. So much so that it’s possible to do useful computing inside a walnut shell.

The first step in this build is to crack into a walnut. Most have a natural seam that separates two hemispheres, so splitting it open, enjoying a small snack, and then adding some small neodymium magnets on the inside of that seam to close up the shell is not too difficult. From there, some LEDs were installed at various points in the shell, with an ESP32-C3 installed in the middle to control everything and oriented so that its USB port is still accessible.

Although putting a small microcontroller in a nutshell might seem like a novelty, [JSK-koubou] is actually using the LEDs to perform a useful task. The walnut sits in his living room and connects to a home automation system through the ESP32, and when it receives a command it uses the LEDs to send infrared signals to non-connected devices. Hiding projects in unexpected places is a fun pastime, like this Meshtastic node hidden in a landscape light.

33 thoughts on “An IR Blaster Project, In A Nutshell”

  1. Serious question.

    This guy has close to 2 million subscribers. I assume he makes some portion of his living from these videos.

    The video is nearly 20 minutes long.

    Who has 20 minutes (or even 12.5 minute) to watch this stuff?

    I can read at easily 3x as fast as I can comprehend the spoken word, even when accelerated. So, based on the content, this would be an unremarkable 2 minute Instructables read with easy links to the repo and the BOM.

    Instead we get underwater video of fish.

    AND 300,000+ people are watching this.

    With ads.

    What is happening here?!

    1. Well as a younger generation gen Z from 2006 I prefer video because it simply clears things up way more than reading especially for a picture thinking autistic dude like me. Maybe it’s not a problem that the “younger generation” has, maybe it’s just that most readable Explanations are just simply not as understandable than video’s are especially when most younger generation children and even young adults to mid to late 20s were born or have developed a mental disorder that troubles them from understanding what’s the explanation is when reading. And please don’t blame it on phones and gaming as yes doom scrolling is still a problem but gaming actually improves math and understanding of information studied within more than 500.000 teens compared to the other 500.000 who didn’t game at all, so that’s not the case here. It might be true that most younger generations are just straight buns at trying to understand stuff because that’s just a fact that the younger generation just is straight up dumb in most aspects but try to see it in their point of view. Those people are kinda just expected to perform well like as if their generation is guaranteed to fail if they don’t perform well in school and jobs and stuff but that’s the same thing that happened with Millennials, Gen X and the baby boomers they all are supposed to out perform their parents or else they get clowned on just for being born inside a younger generation. Doesn’t seem kinda fair right? So now the same goes for my generation gen Z and the generations beyond. I myself am also guilty of clowning on younger generations but some are just downright goofily stupid to begin with and genuinely ask for being clowned on, but do they deserve the disrespect for being born inside a younger generation? No they don’t, they can’t do anything about it that they’re born inside a world like this that’s already broken and destroyed by corporate greed and pure stimulation on an ipad or any device to begin with. Those kids are basically cursed with a damned future with inflation and a really bad house market that refused to go down in price and taxes that go up day by day bill by bill. Please just don’t go and damn it all on the younger generation and clown them for being born in a corrupted greedy world of narcissists and companies and governments that try to squeeze every bit of money out of you to then spend it on even more bad decisions that lead to more money anyway no matter how bad the decisions are and constant stimulation from companies liks tiktok and youtube to absolutely bombard you with either short form short attentionspan focussed video’s and/or unskippable ads. It’s all because companies feel the need to squeeze the brain smush out of kid’s IQ and creativity and overall a normal kids life like i had as a kid by bombarding kids with short form videos and colors and wooo so brighttt like the sun is shining directly into their skulls. Well no shit that the younger generation gets to rather watch videos than actually read stuff.

      Hope this clears things up on why the younger generations tend to much rather watch a video tutorial or a video in general rather than reading. ❤️👍

        1. Well i’m not exactly speaking for my own generations i’m speaking for every generation. As I think the whole generation wars just need to stop now and in the future as children, teens and even young adults including me have experienced the generation war effect that got stuck up in their heads because of the whole thing regarding their parents and/or any other older adult that basically break a young person’s spirit by calling out all theif flaws and saying they’re never gonna make it in life when they go on with whatever normal stuff the youngsters do like gaming and watching youtube and all that kinda stuff. If you don’t know what the term generation war means you can either search it up or scroll a bit down and see an explanation i made that is written from how i usually write my stuff though it can be a bit long sometimes 😅

      1. for me, reading generates the picture, and an unclear picture indicates a lack of understanding … maybe a missing clock signal is part of the (generalized) problem? A video comes with its own speed, a text demands individual adjusting the speed to a value matching the speed of understanding without going on thought errands nor skipping forward too fast. I don’t remember struggling with that too much, but I can imagine this to be a hard problem.

    2. Please note that at no point in my posting did I refer to or speculate on the age of anyone. For all I know or care all 300,000 viewers are in retirement communities or in nappies (or both).

      My incredulity is that anyone would spend 20 minutes watching this video, with advertising, when 95% of the same content could be consumed by reading 3 paragraphs (maybe) in about 2 minutes.

    3. I watch videos like this during dinner, when doing chores or sometimes even while playing videogames.

      P.S. I am also genz(2005) and I would like to apologize for the other commenter. I was lucky to have many good and understanding seniors to chat with. Some may be a bit sensitive, and I wish this would lessen the sour experience of interacting with our generation. I hope this also answers your question.

  2. The ESP32 in a nutshell…

    The nut appart, this guy is using an ESP32 to IR control a ventilator from a smartphone BLE ?
    Some smartphones come with an IR interface (I got one), get one and go swimming all day!

  3. This is all written out pure love towards younger generations i do not hate on kids nor do I condone hating on younger generations, I just think the generation wars has to stop somehow and/or someway.

      1. Basically a generation war is the term that refers to older generations from the very beginning of all generations since the 1900s that make fun of or find every bit of a younger generation more annoying than usual saying that they are in fact worse than them in many aspects in a lot of ways like for example with the previous generation that became parents of millennials they were said to the previous generation whenever gen x was watching TV for too long of their parents’ liking the parents would call them out saying “watch TV any longer and you’ll get squared eyes” and then the previous generation started doing the exact same with millennials even if they didn’t realize that the generation before millennials was saying “get off the internet or you’ll get square eyes” and some going as far as saying the entire generation is all a goner and are basically hopeless. And in recent years there’s been a term for that exact thing between older and younger generations that is now called the Generation wars

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