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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...

Glad you got it working!

Beer accepted!

Ioannis

Wow, this is speedy!

Happy printing!

Ioannis

10% infill means that the compact pieces are not really compact inside?

Sorry, but I am at zero, regarding 3D printers.

Ioannis

Well, you do not have to tell them what you are doing. And after all, having a plastic thing printed there, what really means to them? They cannot figure what you are doing, right?

The $87.45 is...

Maybe here:

https://hdmi.org/requestform/clickrequestasync?docId=16

But you have to register in order to be allowed access.

Ioannis

Are you sure the settings of the internal registers are the same on all you modules?

Can you check/verify that?

Also, power supply should be capable to withstand the peak currents of the...