5answers

[PCB Prototype] What are these 4 dots in the board? I'm quite curious.

What's the function of those dots? Anyone have seen this before?
4answers

[Others] What need to be checked before upload?

Before upload the pcb design, what do I need to check? Any experiece and suggestions are welcomed!
3answers

[Others] Will the bottom resistor work as a replacement for the top one?

Can anyone explain the difference between these two resistors? And what's the difference between J and F?
1answers

[Others] How will you find the resonant frequency of an arbitrary combination of R, L, and Cs?

How will you find the resonant frequencies if given a circuit with any combination of Rs, Ls, and Cs?
1answers

[Others] Can I use inductors for SMD as electromagnets?

I'm not seeing many surface-mount electromagnets out there. There are definitely a lot of SMD inductors available, and I hope they're cheap. How can I calculate the magnetic force they will ex...
3answers

[Others] Do you know a easyway to connect two arduinos?

For my project, I plan to connect one arduino to a motion sensor to send information to another arduino that will turn on a light when motion is detected. Do you guys have some ideas?
1answers

[PCB Prototype] The slot is locked and cannot be exported to production

The slot is locked and cannot be exported to production
1answers

[PCB Prototype] mesa boogie schematics

Hello, I have ordered boards for the Mesa Boogie Emulator and I was wondering if I could get a better copy of the schematics for the 3 versions. The ones posted are too grainy to see the values t...
2answers

[Others] Question about Highlight all tracks/pads in the same net class.

I'm designing a PCB which is going to have some nets at 100V. I have created a net class "100V" for that and I would like to highlight all pads/lines in this class.I tried doing this so ...
6answers

[Others] Room violation in Altium.

All my components show they have violations. When I check them they all state something about a Room Violation. Do I have to have one? Thanks for any help.
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