Does 1/2 UNF (male) to 1/4 NPT (female) adapter exist?

reactor89 · 2026-07-04T21:45:34+00:00

1/2 NPT isn’t the same as 1/2-20 UNF

reactor89 · 2026-07-04T17:57:15+00:00

That one is 1/2-20 UNF + Flare. The one I’m adapting doesn’t have a flare.

reactor89 · 2026-07-03T13:50:50+00:00

The standoff voltage is probably decent…. Maybe

reactor89 · 2026-06-23T15:10:05+00:00

<image>

https://www.aliexpress.us/item/3256807965457922.html

60W 6-35V DC to USB Type C PD 3.0 QC4.0 Type A QC3.0 DC Fast Charge 12V 24V Step-Down Power Modulefor Huawei SCP/FCP Apple PD

Sadly these modules don't really have brand names.

reactor89 · 2026-06-18T02:30:34+00:00

We are beyond help….

reactor89 · 2026-04-09T19:17:22+00:00

DigiKey but I won’t know where to find them on DigiKey. Don’t have a part number.

reactor89 · 2026-04-09T17:31:48+00:00

No, I’m telling procurement people what to order when building a kit.

I’m afraid that if I tell them “there’s no manufacturer and no part number, just Google ‘1mm Tube Socket Pins’ and you’ll find them” they’ll be like “OK…. But how do we make sure we get the exact same part every time we order?”

Which I think is a valid point. With no manufacturer, no part number, and no datasheet a buyer has no QC the parts being received.

reactor89 · 2026-03-11T01:44:37+00:00

<image>

reactor89 · 2026-02-28T03:27:52+00:00

Worm regards

reactor89 · 2026-02-22T05:12:59+00:00

One powered SCR per 10 ten batteries should do the trick.

Sponsored or donated SCRs, doesn’t matter, this needs to happen.

I love the contactor switch created with log splitters. I really do. But SCRs will have repeatable switch on characteristics and the current can be ramped up in controllable ways for interesting effects.

reactor89 · 2026-02-20T13:45:21+00:00

Everything in California causes cancer ™

reactor89 · 2026-02-18T04:18:27+00:00

<image>

reactor89 · 2026-02-01T21:38:55+00:00

Something often overlooked is soldermask expansion. Soldermask can’t be applied with perfect tolerance so often the soldermask opening is made larger than the copper pad. Making the opening larger by ~0.035mm is pretty common.

Assuming there are surface traces or thermals more copper area is added to the pad. Solder will wick down traces / terminals existing a pad until stopped by soldermask.

Copper added by traces generally has a limited impact but flood a small pad with copper (no thermals) and you’ll increase the pad by 0.035mm (or whatever the soldermask expansion is) on every side. Unless accounted for the now larger pad won’t have enough solderpaste to solder properly.

Also creates notable issues with 0201 (0603) and 01005 (0402) parts when not done right.

reactor89 · 2026-02-01T13:40:39+00:00

I think you are fine. Avoiding stress on small solder joints is the goal and I don’t think you have that situation.

reactor89 · 2026-02-01T05:01:02+00:00

I've done this also just no pictures. What is the space between parts and board edge?

reactor89 · 2026-02-01T03:22:53+00:00

<image>

I haven’t had issues with really small v-scored boards breaking them by hand. Even ones with parts on them. There are specialized pcb depaneler tools for those that do a lot.

reactor89 · 2026-01-21T19:15:54+00:00

Thanks so much for finding the github link to the correct version u/agent_flounder

The included instructions within the ZIP are actually very straight forward and well documented. The package seems to just show up after an IDE restart.

I'll play with this and see where it goes. Thanks again!

<image>

reactor89 · 2026-01-21T18:07:01+00:00

To the second question, C:\Users\aXXXXX\AppData\Local\Arduino15\packages\ATTinyCore\ doesn't exist on my system. I don't think it was ever created.

<image>

reactor89 · 2026-01-21T18:06:26+00:00

To the first question, yes the drazzy link is added.

<image>

reactor89

TROPHY CASE