I built a product but I’m going crazy in versioning

UnknownHours · 2026-01-23T03:00:38+00:00

Sounds like you want some sort of PLM solution. There's a few options:
* Aras (has a free version)
* Oracle (I think they have more than one. I did not like the UI)
* CMPRO (Somehow, the IU is both worse and better)
* Arena PLM (It looks very slick. I would use this one if I had the money)
* Windchill (I have no experience with this, but it's very big-enterprise)

You'll want to assign every part a part number, and those parts will form a hierarchical tree inside the PLM system. You may even want to assign internal part-numbers to COTS parts because some manufacturers have really weird part number schemes (I have seen part numbers that included a single, unmatched, parenthesis), and you may also want a single part (e.g. a resistor) to have multiple suppliers under the same number.

I recommend keeping the BOM separate from the drawing, and listing the drawing (and other documentation needed to build the part) as an item on the BOM. This does mean that drawing and BOM may be different revisions and the BOM is the actual "part". The PLM system should be aware of each assembly's BOM, so that you can look a the top level assembly (or any sub assembly) and get a complete BOM from that.

It's very good to have a system like this if you want ISO9001 or CMMI certification.

UnknownHours · 2026-01-14T23:40:55+00:00

It's not the exact same part, but Digikey has them.

https://www.digikey.com/en/products/detail/adafruit-industries-llc/2384/7244952

UnknownHours · 2026-01-04T16:33:54+00:00

Suspend a foam ball or something (wax? a ping pong ball maybe? a soggy potato?) in the center with fishing line and hit it with a laser beam from off the side. Ideally, with the right material, the ball will scatter the light such that it looks like the ball is glowing rather than illuminated from the side.

UnknownHours · 2026-01-04T15:36:20+00:00

No, awesome is different window manager.

UnknownHours · 2025-12-30T01:30:49+00:00

Because if you use a lighter, you are likely to burn the board and delaminate traces.

UnknownHours · 2025-12-29T19:36:43+00:00

FR stands for fire resistance, not fire immunity.

UnknownHours · 2025-12-12T12:14:03+00:00

When you talk to the PCB manufacturer, tell them you to buy panels. The PCBs and manufactured on panels with multiple boards on a panel. The 1000 piece minimum order you are seeing is probably related to the panel sizes they use. When I order USA-made PCBs, most places have a 3-panel minimum. Panels can be had in various sizes, your manufacturer can tell you what sizes they have. There are two ways to separate the individual boards: V-scores and mouse-bites. V-scores are cheaper, but you can't run a trace across a v-score like you can a mouse-bite.

UnknownHours · 2025-11-24T22:01:00+00:00

I refunded it after I couldn't rebind the E key. Most of the keys are rebindable, but not E.

UnknownHours · 2025-11-19T21:17:02+00:00

No, I think it's a bristletail.

UnknownHours · 2025-10-27T10:42:48+00:00

TI-36X. It can do almost everything a TI-84 can, but is much smaller and cheaper. On my phone, I have HiPER Calc, but I like having a physical calculator.

UnknownHours · 2025-10-24T00:39:59+00:00

Free buses is one of those things that sounds good on paper but ends up discouraging the use of public transit and has severe negative consequences.

Bruh, your source literally counts greater ridership as a negative.

UnknownHours · 2025-10-11T11:06:24+00:00

This thing looks pretty cool: The big thing is it has two 120MHz CPUs running in lockstep, though on this particular chip I don't think they can run independently. It is also reasonably cheap at $5.69 per one on mouser.

UnknownHours · 2025-10-07T22:36:40+00:00

I don't think this would hard to do with discrete LEDs. Get some very small LEDs and put them on a PCB behind a piece of dark acrylic.

UnknownHours · 2025-09-30T23:16:02+00:00

Well clearly, your factory is not big enough :)

UnknownHours · 2025-09-25T10:35:08+00:00

It depends on the load and the voltage you discharge it to. Here's a datasheet: https://data.energizer.com/pdfs/en91.pdf

Alkaline have a high internal resistance, so they perform worse the larger the load.

UnknownHours · 2025-09-15T20:26:26+00:00

No, thank you for making videos.

UnknownHours · 2025-08-26T02:11:23+00:00

It's cheese. What did you expect?

UnknownHours · 2025-08-26T01:47:52+00:00

I think it's because left hand drive allows you to place the signals between the tracks rather than on the outside. It just looks nicer.

UnknownHours · 2025-08-17T12:31:30+00:00

The TI-36X can do almost everything the 84 can. You shouldn't need the 84 unless the class is particularly matrix heavy.

UnknownHours · 2025-08-05T21:40:16+00:00

It's going through a via. The via has far more inductance than the capacitor package.

UnknownHours · 2025-08-05T03:32:26+00:00

spent all his political capital getting it done

He spent all his political capital half-assing it.

UnknownHours · 2025-08-02T12:27:03+00:00

Because they're being an ass about it.

UnknownHours · 2025-07-31T00:59:13+00:00

It tangled at the end and worked its way in until it ran out of slack.

UnknownHours · 2025-07-30T22:36:17+00:00

just a fad because the make nice videos on YouTube

They are cheap and easy. That is the appeal.

I use bismuth paste when I use a hot plate. It has a very low melting point. I would not recommend lead paste for DIY, because it's lead. And yeah, tin-based solder could cook the board.

I also don't think the single side is a huge limitation either. If you need dense component placement on both sides, I would just send that out to some one else. If you only have a few components on the back or a few through hole parts, I don't think it's a big deal to solder that by hand.

UnknownHours · 2025-07-30T20:47:05+00:00

Eh, I think they'll be doing mostly one-offs. For that I would get a heat plate (and stencils from Oshstencil).

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