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Ask HN: What is your hardware/garage side-project?

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41–50 of 86 posts

Re: Ask HN: What is your hardware/garage side-project?

#41
I've been working on my generative adversarial network. It's a fascinating type of ML that can learn from both supervised and unsupervised data.

In essence, given data it will create a generator of that data. Right now my datasets are mostly images. I have tried on audio data and that does start to work - then diverges.

I'm still trying to find a configuration that works really well:

https://github.com/255bits/hypergan *

* needs modern GPU to run

Re: Ask HN: What is your hardware/garage side-project?

#45
I've been making little speakers out of old suitcases and boxes. Similar to what www.theboomcase.com does but not quite as fancy/powerful. I'm not trying to sell them but its fun to give them to friends as gifts and its enjoyable to work on at our makerspace with the kids.

I like finding sale components on www.parts-express.com and amazon. You can get small amps for $10-20. I've made them with a rechargeable lead-acid battery. Next goal is to figure out how to get a bluetooth module in the mix (right now they just have an aux port). I'm admittedly bad at audio electronics but I'd like to figure out how to use more powerful amps with a battery.

Sorry, no pictures on me at the moment.

Re: Ask HN: What is your hardware/garage side-project?

#46
post #26

A Flying Car. Anyone with CAD, CFD, aerodynamics skills wanna help?

me and my friend are working on something similar. We prefer to call it a drone though :$

My friend was looking into the material strength and feasibility while I was looking into the software.

We intend to use a 3d printer to build a small scale model and progressively keep making it bigger.

We would love to collaborate if that's ok with you.

Based in Canada (Toronto) and we put ~10 hrs/week max on this project.

Re: Ask HN: What is your hardware/garage side-project?

#48

Not yet, I'm in research / learning / pooling resources for pcb fab on a desk, all-in-one. I've done CNCs before as a hobby, film scanners and stuff like that and I have some concepts which I think could yield an 'affordable' all-in-one pcb. You give the machine gerbers, you get (a few layered) pcb out. Maybe even a pick and place inside, but that's further down in concept. One step at a time, as time permits.

Out of curiosity, how are you planning on handling plating for vias and through-holes? The desire to stop handling chemicals (I have no convenient means of proper disposal) has got me using the on-line prototype services for anything multi-layer (though I've thought about using my CNC mill for some simple single layer stuff).

That's the thing. I have to build several prototypes first in order to see which will be less hassle. Initial idea was to have the machine handle chemicals and a contained disposal system. On the other hand I could do it with hollow 'jackets' (that's how we call it, grommet is probably the proper name).

I have to balance two ideas into a concept first and then prototype. Those two primary ideas are:

1) have end-user buy as basic things as possible in order to produce PCBs (not rely on my chain of supply / custom shit). This is in order for machine to be as usable as possible, no matter where you live and to keep costs for you down as possible.

2) Have the workflow as hassle-free as possible with the best possible result.

Sometimes, those two ideas are clashing. Ultimately, it would be a machine built out of commonly available parts. For most parts, at least. And, I would provide pre-built machines as convenience. BOM for protos is already at around 7k-10k Euros, and it will take some time to build and refine on what I'll see from protos. Ultimately, I want a sub 2k Euros machine ready, out of the box, experience for end user. Maybe even less if I opt for smaller FR4 boards. From everything I've pooled so far together, on paper, it's doable. I just need to find a bit of time. I already set some time and cash after May next year just for this (after I finish a TV series I'm working on - my day to day job).

In my opinion, I think an affordable desktop PCB factory could open a lot of possibilities for people. If you had a machine and only things you would need to buy are FR4 boards and some commonly available and cheap chemicals and have the machine 'print out' a pcb for you, maybe even with parts placed, and have the exhaust for fumes and disposing system safe and easy and cheap... We need this. I need this.

Re: Ask HN: What is your hardware/garage side-project?

#49
post #37

I'm adding flow meters to my keggerator so I can detect when someone pours themselves a beer from one of the taps. The plan is to have a camera take a photo, do some facial recognition to see if its either one of my flatmates or myself, then optionally post the pic to #beertheif on twitter or start playing some music based on the chosen beer.

My buddy has something going along the same lines but is using temp sensors to detect a pint being pulled: https://mobile.twitter.com/toms_beer_keg/status/799323771043...

Two other non-contact methods I've seen are direct mass measurement (probably ebay the scales, it'll be like $500 new) or the most innovative thing I've seen is flow rate meters watching the CO2 source. See you can measure flow rate of the beer but that can get weird with bubble formation and sterilization but CO2 is clean and biologically boring and single phase. You can buy a flow rate meter with digital output for immense expense but its easier to use an analog one with a webcam. Big fun!

Re: Ask HN: What is your hardware/garage side-project?

#50
Does full time but fun count? We're building a network of automated food preparation and retail service locations based upon robotics, to initially launch in mainland China: http://8-food.com/

The idea is the consumer can buy from their phone and pick up customized meals. Currently we're iterating functional prototypes toward ready for manufacturing while tweaking our form factor and components and increasing our ingredient volume and breadth.

We'd consider bringing on additional founders with strong mechanical engineering (CAM/materials science/foodtech) experience.

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