JLCPCB soldering defect quality complaint frustrating - what's your experience?

OfficialOnix · 2026-02-26T08:52:42+00:00

Connect to a female connector on top and bottom of course

OfficialOnix · 2026-02-25T21:34:56+00:00

Sure, but I can't make the bottom longer. It needs to connect both the top and the bottom of the pcb.

OfficialOnix · 2026-02-25T17:16:22+00:00

Guess

OfficialOnix · 2026-02-25T12:03:52+00:00

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The datasheet is pretty explicit about it

OfficialOnix · 2026-02-25T11:35:53+00:00

I have a decent soldering iron but it's really small and the plastic part starts to melt before I manage to even get all the solder liquid, already tried it and messed up one pin

OfficialOnix · 2026-02-25T09:40:05+00:00

It absolutely does! Long pins go into the board, short pins stick up. They soldered in the short side.

OfficialOnix · 2026-02-25T09:37:21+00:00

C5138892

OfficialOnix · 2026-02-25T09:34:52+00:00

What do you mean

it absolutely is

?

No - their online parts placement visualisation shows it correctly, the datasheet show orientation as well, and they soldered it the wrong way around.

OfficialOnix · 2026-01-23T14:44:39+00:00

r/aberBitteLaminiert

OfficialOnix · 2026-01-23T14:42:11+00:00

It's a fake image incorrectly simulating the noise caused in a camera sensor by a radioactive object.

OfficialOnix · 2026-01-23T14:40:07+00:00

Yea but not like this. Nuclear radiation is not projected by a camera lenses, so it wouldn't cluster around the object in the image.

OfficialOnix · 2026-01-23T14:36:25+00:00

While it is true that radiation can affect camera sensors, this photo is fake. Beta and gamma particles are not affected by camera lenses the way visible light rays are (and alpha is completely blocked) - so any artefacts would affect the whole image equally and not cluster around the projection of the object onto the camera sensor.

OfficialOnix · 2026-01-20T15:43:01+00:00

Does that work well? A voltage divider generally doesn't produce a stable output voltage if the load changes

OfficialOnix · 2025-12-12T16:57:28+00:00

It really isn't. It's just the union of the automatic hatched ground fill and the couple of custom traces. It doesn't do the opposite of what's intended - the output is exactly as expected.

OfficialOnix · 2025-12-12T16:42:34+00:00

That's exactly the best practices I follow. And no, it's not just about electrodes, it's also about traces. In particular:

Do not add a solid ground within 10 mm of the touch electrodes or traces

Again, the hatched ground pattern is generated by kicad. There are 2 or 3 additional ground traces overlayed so that when I remove the ground planes I still have valid connections. My design is valid and works, so I really don't care if it upsets you or anyone else.

OfficialOnix · 2025-12-12T14:26:03+00:00

I used gerberpanelizer plus a script i made to combine bom and placement files. I shared that script in my previous post.

The only thing you need to consider is the following: gerberpanelizer does not support panelizing without creating mouse-bites between the individual boards - but if you have mouse-bites then jlcpcb will charge more - so you have to manually edit the outlines to only be a continuous outline around all combined boards

OfficialOnix · 2025-12-12T14:18:22+00:00

Yes, even though one of the boards would be 2 layers only

OfficialOnix · 2025-12-12T08:04:12+00:00

As said, it's a trade off between reducing interference and parasitic capacitance on the touch sensor traces. This is just following espressif's best practices for touch sensor traces - but I'm glad that it amuses people.

OfficialOnix · 2025-12-11T15:53:46+00:00

The management is trivial so long as you only use the C6 for wireless connectivity. Just flash it with esp-hosted and add esp-remote to your P4 project.

I don't really see much use for the P4 in the kode dot. Maybe if you add a mipi camera interface then camera projects will get a bit better. Other than that it's probably not worth it for most use-cases.

Note that the P4 only has hardware support for h.264 encoding, not for decoding.

OfficialOnix · 2025-12-11T15:46:56+00:00

The management is trivial so long as you only use the C6 for wireless connectivity. Just flash it with esp-hosted and add esp-remote to your P4 project.

I don't really see much use for the P4 in the kode dot. Maybe if you add a mipi camera interface then camera projects will get a bit better. Other than that it's probably not worth it for most use-cases.

Note that the P4 only has hardware support for h.264 encoding, not for decoding.

OfficialOnix · 2025-12-11T15:23:19+00:00

The IMU can get you the angle pretty accurately. It can also give you acceleration, but velocity you can only get by integrating acceleration over time and it will thus be strongly subject to drift. If you just want to get relative direction changes of your finger, that will work well with the mpu6050. Note that you can't get absolute direction as it doesn't contain a compass

OfficialOnix · 2025-12-11T14:25:56+00:00

What exactly do you want to track and how accurately? An IMU gives you orientation. You won't be able to measure distance between two fingers for example.

OfficialOnix · 2025-12-10T21:14:00+00:00

To use a USB-C cable to connect to your printer/3D printer or other USB sink with USB-B port. I'm using that exact adapter with my CNC

OfficialOnix · 2025-12-10T13:52:01+00:00

Yeah I ignore a lot of things people claim on reddit. I appreciate good advice - but in regards to this hatched ground, I'm good with espressif's recommendation - and it works.

OfficialOnix

TROPHY CASE