Subnostr

Then place you components, making sure to orient them correctly if needed.

#m=image%2Fjpeg&dim=1920x1440&alt=Placing+SMT+parts+on+a+PCB&blurhash=%23FL%3BHN%7Ep-n9FIWRjRjt6oe0L%7EWog9at6%251a%23RlofD%25%3FHt7oft7t6t7jZbHIVt7xtxuRkNHxtocWCRjt6ogWYRjoej%5BRkWBNHayt6a%23Rkoeoej%40ayt7WBWCofoeWBWCofa%7C&x=814c5440cd675b37bd18409765a1885b277c3c7a09fa7d6d864a1919d8d15a9b

Dr. Hax 2y ago

Finally, put the board on a hot plate to melt the solder. Hot means 180°C in my case. Here's a before and after comparison.

#m=image%2Fjpeg&dim=1440x1920&alt=Signet+on+a+hot+plate&blurhash=_EC%24%3Dl4%3B%7ET9c%3FFIq-n_3IpM%7CIpo0NHoc%3Fbxus%2CxaWBoeWCf*kDofWCjYR*WV%252W%3DoIWCoeays%3AWYxZM%7Ct6RkoKR*-%3BM%7Ct6WBs%3As%3Aj%5Bf%2CoJWDs.R*ayWBWAWBs%3ARkofWCoe&x=e30311f01b655a1d3022730c34d2a7a6eb6d3a14a88f47fa86b96a37a1880a07

#m=image%2Fjpeg&dim=1920x1440&alt=Board+is+now+soldered&blurhash=%23BC%3FT79a%3FF9H-n9b%25M9bxa%7EqM%7DxtM%7CxtNHxaRkoeE0W%3FxZf%2CxaWBs%2BkCxtt6ofayj%5DWBj%5DRjoejs%25MRkkCRjoyt7bIaeRjt8jYfij%3Da%7BWBofWEWXt7xZRjxtM%7BV%40WCoza%7E&x=fac912cb5d32e985825ca509f700aa54f1ba16f622b4073dd67fd445361d2130

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Discussion

kidwarp 2y ago

Where can I get this?

Never seen on me before.

Dr. Hax 2y ago

The hot plate or the Signet?

The person who made the hot plate isn't making them any more. But if enough people are interested in buying them, I'd be willing to do a run of them. I have the creator's permission and will give him a portion of the money for doing all the design work. Price would be between $40-$300/unit depending on how many units we can get people to order and how many things go wrong during production. (I've never built one of these before, so there'd absolutely be some SNAFUs)

That particular Signet is a prototype, so you can't buy that either, but you can get the current model on my store for BTC or the coop's store for fiat. https://hax0rbana.org/signet/

kidwarp 2y ago

Was asking about the hot plate.

I have been considering purchasing the signet. I would purchase from you for btc 4 sure.

Dr. Hax 2y ago

I'd like to have a spare hot plate, and I could probably find at least 1 other person to go in on one.

The thing is we need to make at least 10 of them, minimum, for the cost to be reasonable. Making 3 units just isn't going to make sense, financially.

I mean, if some high roller wants to bankroll it anyway, I'll get to work, but my strike price is $40 or less.

kidwarp 2y ago

Ngl would like to have one for when I get my pcb printer up & running eventually………

Dr. Hax 2y ago

PCB printer? Like a CNC?

In any case, yeah: PBC manufacturing -> pick 'n' place -> hot plate FTW.

If you're making a lot of stuff, get a conveyer belt style hot bed. They do the preferred heat profile of the solder, including warming it up slowly, heating it to whatever temperature for some specific time, and then letting it cool down at the appropriate rate.

I don't do all that. I just melt it and then turn it off. Works fine in practice.

kidwarp 2y ago

Yes pcb printer not a cnc pcb etcher.

I haven’t been able to find a small e nuff pnp yet got any leads?

Never heard of a conveyor belt systems like that? I’d assume that’s for more mass production?

I’m just trying to prototype my own stuff.

Garage mad scientist in training.

Dr. Hax 2y ago

Facinating. I've never heard of a PCB printer before. Where can I find out more about this?

There's some open source software that can be used with DIY parts. I know a local hacker who built one. I can ask him for more info next time I bump into him.

Conveyor is for larger scale production. They have small ones that will fit on a counter top of lab bench, but total overkill for just making one-offs.

kidwarp 2y ago

I have a argentum new in box that I bought years ago.

Still needs to be set up.

Probably gonna have to find where I can get new printable silver tho.

kidwarp 2y ago

Was purchased when I owned my mining company.

We were going to prototype shit like gecco science/bitaxe back then with our broken/obsolete miners.

Dr. Hax 2y ago

This looks rad. Too bad it looks like the company behind it went under.

I heard in an interview that it was open source, but I couldn't find the source with a few quick searches.

kidwarp 2y ago

Yeah it does suck they went under.

I’ll have to take a dig a see what I find for it being open source.

Dr. Hax 2y ago

For a DIY pnp, check out https://openpnp.org/

kidwarp 2y ago

I’m gonna have to spend some time mulling this over.

Dr. Hax 2y ago

If you are mainly doing one-offs, I'm not sure a pnp is really necesary. It's not that hard to place components as long as they are 0402 (imperial) or larger. I'm trying to move to 0603s and larger, personally.

Then again, my main project with SMT parts is the Signet and there are only like 15 or so components. Maybe a pnp would still make sense for big, complicated things, even if they are one-offs

The tedious part is applying solder paste without a stencil. A laser cutter might make it worth making a stencil for a prototype or one-off, but paying $7 for a stencil that is only gong to be used once, on a $3 board is cringe, IMO.

kidwarp 2y ago

It’s definitely not that’s for sure.

But I have some crazy ideas.

3d printers for solder paste?

Idk everything I do is at a snails pace lol

Dr. Hax 2y ago

I like that. With the syringe style applicator, it seems like it would work pretty well.

Dr. Hax 2y ago

Apparently, there's nothing new under the sun.

https://www.youtube.com/watch?v=Psf1PUGNOus

kidwarp 2y ago

Well damn lol.

Dr. Hax 2y ago

Then, unless you did it perfectly the first time, fix all your bridged pins and/or pins that are not connected.

It's hard to get the right amount of solder paste on there. This is also true if you are using a stencil!

Dr. Hax 2y ago

If you have any through hole components (or as I like to call them, normal components), put those on last.

#m=image%2Fjpeg&dim=1358x1019&alt=Soldering+on+a+USB+port&blurhash=%23KF%7EHh%7EqI%5EtSn%25t6RPaekCkXI%40bIbIoLaes%3AWCof%250Rkt4jZofadWYofWBp0%25g-%3Bo%23t7WBV%40RjRjkrWZ%25Mx%5Dj%5DW%3DjYWBR*n%23ayRjocogV%5Boffkay%252xuWYWEofRjWBWBWB&x=325828a595c23a24a0cee1d82f1ab5967b53c1fe14b6119d55e43134794dd5d1

#electronics #soldering #cybersecurity #infosec #cyber #diy #handmade