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#pcb

7 posts5 participants0 posts today
Continued thread

Well, it works! I just needed to drill the button part further out. And surprisingly, it seems like even this PLA part didn't take any damage besides me soldering all pins in the jig. The difference between using the jig and not using is pretty clear, especially considering that I don't only want to build these PCBs for myself.

This has to be a @kicad change.
I have V-cut footprint which includes a track keep out of 0.2mm each side. Has worked for years. Drag a track to edge no problem.

But looks like it actually placed tracks so tracks AND track clearance avoid keep out, making nearly 0.4mm gap. And it seems @jlcpcb want 0.4mm gap.

Latest boards kicad allows trace right to edge of keep out. So only 0.2mm. So too close.

I’ll fix footprint, but a tad frustrating I did not notice!

I'm looking to design a PCB that'll be carrying 40A peak (probably closer to 30A continuous) at 36V for my hauler project. Does anyone have any good guides on high current PCB design? Thinking in terms of recommendations on via stitching etc between polygons.

Realistically all the board will be doing is current monitoring with a couple of TI parts and a micro on a CAN bus, holding a fat relay as the battery cutoff, fuses and some connectors for power distribution.

Continued thread

Many cool answers, but the most interesting question still remains.

This board looks like it was covered in rosin deliberately, as a protective layer.

I failed to find any guides about it. Anyone with hints?

Solder warriors, how do you protect your etched boards from corrosion?

I bought this one a lifetime ago. Clearly homemade. It's covered with rosin.

I thought rosin was corrosive to the traces.

What technique is this? What kind of rosin is used here?

Goodnight! Trying to get my first #HacksterIO #SAO shipped in time for DefCon, so I've spent the last few days learning Autodesk Fusion ECAD from scratch. 5am & I've just realized it says R2 😅

(Fusion 360 was the first 3D CAD I learned, back in 2012 or so, and used during my AiR stint at Pier 9 in 2014! But using it for #PCB design is new.)

As usual, this will work as an earring (thanks to the 45° through-hole headers), even if the circuit fails. :)

Replied in thread

I think I've entered a new phase with my #PCB design skills. Being able to sketch the layout in #Rhino3D where I'm relatively skilled, then export as SVG and then just line up the handful of actual components just so in Fritzing has been great.

Today I've discovered the existence of "single line" or "single stroke" fonts - apparently used in engraving, but also useful for text on PCBs. The one I'm using here is "MecSoft" from the Rhino people themselves: wiki.mcneel.com/rhino/engravin

Wondering what goes on inside a lever-wire connector? Here ya go!

This is a KF141V compact 0.1" vertical connector. So far, seems like a great alternative to screw terminals.

It's quite difficult to actuate the lever, which is great. It is spring-loaded, so it returns to closed position nominally - no multi-stable mechanism. #electronics #pcb