This thread is for anyone working on personal projects to share their progress, and hold themselves somewhat accountable to a group of peers.
Post your project, your progress from last week, and what you hope to accomplish this week.
If you want to be pinged with a reminder asking about your project, let me know, and I'll harass you each week until you cancel the service
Jump in the discussion.
No email address required.
Notes -
So, as mentioned in previous weeks, I've been trying to TRONify my cargo bike and kids' bike helmets the last few weeks and I've never quite appreciated how much of small electronics work is shopping in general and specifically, shopping for plastic pieces of shit. This isn't what I thought I would struggle with. I'm a fairly skilled dev so I thought I would struggle with EE concepts or the dexterity required for soldering or even simply being able to work with a magnifying glass but no, shopping, which I find borderline triggering due to hatred of clutter, is the actual limiting factor for me.
And shopping for an enclosure for housing all of this junk is the challenge. For the bikes themselves I can use standard Hammond plastic enclosures and consumer battery packs, but for bike helmets all of the standard stuff adds way, way too much bulk.
The rough sketch of components I need housed are
Finding an enclosure that isn't as bulky as shit for this seems impossible, so I'll probably have to 3d print something. Which means I need a 3d printer[2]. From my time being involved with a local Makerspace, my opinion of 3d printers is that they spend most of their time being broken, but I've heard from trusted advisors that that's because my experience has been with 3d printers made by the decadent and pathetic Western concerns and that the Bambu 3d printers from China have changed everything[3]
So... maybe that's my next purchase. Perhaps I can justify the 3d printer as some kind of educational value for the kids.
Does my experience here sound right so far? Small electronics success often hinges on shopping skill?
Notes
I do see combination boost converter/USB chargers for 18650 cells, and that would cut down on complexity/bulk/work, but their amperage is much too low to run LED strips off of so I'm stuck buying individual components for this.
Though I think if I want a really cool looking transparent enclosure so we can see circuit boards and blinken lights I'll need acrylic covers? Which requires getting a laser cutter too? I wonder what educational value for kids these have...
So long as you have no opsec concerns from running proprietary firmware that requires a cloud connection to do anything from a nation state that we might go to war with in the near future. Though I'd be kind of amused to see the worst that can happen.
Switching gears (ha), but to avoid making another post, I'll consolidate into this one.
Aliexpress.com has incredible deals but takes forever, so that stalls my TRON helmet project out.
So, in the meantime, I've gotten to
triangledodge chargerskydome in my 3d game (pic attached) that was inspired by binge watching the Fast and the Furious series while feverish. I made some generic cyberspace background while waiting for the right time to take a 360 panorama pic of a skyline in my town.I fixed the texture banding issue. The camera now follows the car. The car can steer and accelerate. It runs okay on my hardware. So... I guess the next priority is to make a race track and add some collision detection to this bitch? A computer controlled car to drive against? Maybe incorporate some engine revving sounds?
I suppose a true Ride or Die Homies game needs something more inspired than a race track though. Like outrunning a nuclear explosion. Or battling a mechanized raptor.
I should be doing this smart and using Unreal Engine or something, instead of writing a 3d engine from scratch, but I got into computers in the first place because I wanted to write a 3d engine (before getting distracted by the world of Linux and networking), so coming back to this feels like addressing some unresolved spiritual concerns.
You know, once upon a time I wanted to do more electronics stuff. But this is more or less the brick wall I ran up again. Sourcing parts is bonkers complicated, and simply was not a part of the hobby I was going to enjoy. I repaired a few old motherboards, and developed enough soldering skill to repair the odd toaster, mouse or audio speaker, and more or less decided to leave it there. Although I'm always have my eye out for an inspiring woodworking/electronics project.
It's really the most hellish part. I'm trying to just take it easy and not worry about how soon I get this done to avoid stressing.
Starter kits help a bit, but they're only like $10 whereas I want something like $100-200 that contains the top 1000 things people use for, e.g. Arduino or LEDs.
I fantasize about taking a two week vacation to Shenzhen and hiring some Chinese EEs that speak English to show me around and going home with a suitcase full of stuff I bought off the street.
I think that sourcing the basics, e.g. a breadboard, wired resistors, capacitors, LEDs, jumper wires, some opamps, is not that hard.
Amazon or (in Germany) Conrad have you covered there (if you don't mind overpaying compared to what the parts would cost in bulk).
If you increase your budget to 200$, then different people will want very different things. Matrix LCDs, TTL logic chips, myriads of sensors, servos. Some will want passive SMD components (with different preferences to size).
And in that stage, they probably also want components which are not sold by Conrad, which is when things get painful.
There are, of course, companies which carry zillons of electronic components, e.g. Farnell, Mouser, RS, Digikey. Their stock is well curated, you can filter based on dozens of criteria until you end up with what fits your needs. In fact, having used these websites I have come to despise the shopping experience on Amazon, where little in the way of curation happens and accessories for X regularly appear in the category X.
Alas, these electronics vendors do not typically sell to hobbyists. Presumably, cutting five chips from a reel and packing them for sale is not in itself very profitable, but simply a prerequisite to sell a reel of your chips to companies, eventually. Unlike corporations, private persons rarely scale up their projects to a scale where serious money gets spent, and complying with the consumer protection regulations is just not worth it.
So you sometimes find yourself in the situation where you know that four different companies carry the chip you want, but none of them want to sell to you. (These days, it might be possible that you can get it from China, if you don't mind the wait, though.)
Yeah this part is easy if you know to get the $10 starter kit.
Agreed, market failures abounds. Except in China?
I have 3 different shipments on the way from Ali Express, with 3 different orders in each one, each order for $2-3 containing just 3-5 chips cut from a reel or whatever. And the average price of each shipment is about $11 (>$10 is the free shipping level). The combination of cheap labor and postal arbitrage (China gets some preferential extremely ludicrously cheap shipping to the US, cheaper than US-US domestic) is unreal. It's almost outrageous enough that I sympathize with Trump. It does take 10-12 days to arrive though.
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