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Regarding passives, like R's and C's, there are millions of brands and types available (but not on stock all the time).

It gives me headache everytime I have to do an assembly by JLCPCB...

But...

Not at the same time though. You have to watch the SOA curve and then you will realize that it is not so impressive as the numbers advertised by the manufacturer...

Ioannis

Simulating any part is impossible.

Either you should choose a similar one (search the included lib or other people's lib) or make your own library. There are a few ways but I never tried really do...

Isn't it amazing?

Ioannis

Have not tried the KiCAD yet (as well) but LTSpice, despite its primitive environment, it is easy use, at least for the basics.

Worth to give it a try.

Ioannis

Have you tried LTspice? It is totally free and great support either on YouTube or from forums around.

I admit, it is a bit strange if the component is not in the lib and you have somehow to add...

This is great but why cannot you do it? I think it is cheaper, no mechanics (that can fail), easier to build and only you have to disable it by software. Even if user pushes the button, nothing will...

You mean decreasing ovbiously. But problem is not solved and at random time it is possible that will happen again. Maybe more seldom but it will.

Ioannis

I think it can be right since Serout/Serout2 happens in a async rate. USB is fast but in any case the soft Serial is interrupted randomly.

The logic analyzer catches one instant of this.
...

The design is based on a classic switch (On/Off) but if I understand correctly, in special cases, the push button should be in a specific state and user is not allowed to change that.

Ioannis

I guess then, the sending device is interrupted by the USB routines while sending and as a consequence the transmission of RS-232 at that time is corrupted.

Ioannis

Maybe you can use a small stepper motor with linear motion like the ones on the CD head mechanism?

Like this one...

What is the clock of each PIC you use?

Ioannis

As Richard noted, the problem could be in any other part of your code. So you are alone on this as we cannot guess what may be happening there.

However, the part you posted does not somehow checks...

Your best shot would be to post your code...

Ioannis

Yes it could be a problem. Try with no resistor and see if the problem is in your code or just the lack of power on the link. Then try max 1K resistor.

But without more details like, type of...

Have yet to beat that speed!

Ioannis

Isn't it amazing how things are today regarding PCB manufacturing?

Once I had either to do it myself for one layer, using chemicals or pay too much money for barely acceptable quality of small...

Well, you are not alone! Happened to all!

Ioannis

Fortunately PCBs have two sides! Use the other now! :)

Ioannis

I guess they were busy building the K1C monster...

Ioannis

forget Proteus.

Also I think Henrik forgot to add the label Exit: just before the Serout command.

Ioannis

What I read from that thread is that you do not have to worry about stealing your idea from pcb perspective.

And I never cared about that. Maybe because I use most of the cases, MCU on board and...

And I guess the higher infill the slowest process. Added to the more plastic usage, right?

Ioannis

Just saw this https://eu.store.bambulab.com/en-gr/products/a1

Although it has smaller printing area than Anycubic, it can color print and also has a nice feature for fuzzy printing, getting rid of...