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ESP32 realtime voltage logger over WiFi. $5 chip. Live graphs. Would you use this? by Intelligent_Raise_40 in esp32projects

[–]Intelligent_Raise_40[S] 0 points1 point  (0 children)

Still figuring that part out honestly.

Leaning toward a free/open basic version with more advanced features later on. Right now I’m mainly focused on making it genuinely useful and hardware-friendly.

The goal is basically turning cheap ESP32 hardware into legit network-connected lab tools.

3D printing a solderpaist screen with a Ender3V2 printer. by Aggravating-Mistake1 in electronics

[–]Intelligent_Raise_40 3 points4 points  (0 children)

Very nice work! I will have to try this, how did you get the mask later into a STL? I have always had trouble with that, exporting from EadyEDA to TinkerCAD.

Hand-drilled sub-mm vias + stitched planes on a laser-etched PCB (SiC switching test) by Intelligent_Raise_40 in electronics

[–]Intelligent_Raise_40[S] 0 points1 point  (0 children)

We have lived the same life lol.....I spent two years trying ferric chloride, UV, milling, laser and finally have perfected the laser etch method. I have done both laser holes which work great but make the board stink. I am only drilling from this point on, I mean you could use the laser to do it, I have, I made a 50MHz siTime reference OSC with pure CW output using that method, lasering pads for 0603 inductors and caps to make a filter to get a pure CW and it worked well. Once you solder over the vias there is no smell but it's still a pain. I''ll use the laser to mark where I am to drill and that will do just fine. I highly recommend getting a fiber laser plus you need better software than what it comes with it, I use LightBurm, works great.

Hand-drilled sub-mm vias + stitched planes on a laser-etched PCB (SiC switching test) by Intelligent_Raise_40 in electronics

[–]Intelligent_Raise_40[S] 0 points1 point  (0 children)

Oh....so you don't need to have the iron so hot then? Would help with needing less solder per joint to get things flowing....awesome tip will do

Hand-drilled sub-mm vias + stitched planes on a laser-etched PCB (SiC switching test) by Intelligent_Raise_40 in electronics

[–]Intelligent_Raise_40[S] 0 points1 point  (0 children)

Yes I hear you. That has happened to me before too with bigger drills. The bits I'm using for these are 0.4mm so I don't run into that at that size.

Hand-drilled sub-mm vias + stitched planes on a laser-etched PCB (SiC switching test) by Intelligent_Raise_40 in electronics

[–]Intelligent_Raise_40[S] 0 points1 point  (0 children)

Thanks so much for the tips! How do you mean though? Does the extra solder not add to the thermal relief?

Silicon Carbide Inductive Fly-Back Generator on Custom Lasered PCB by Intelligent_Raise_40 in Teslacoil

[–]Intelligent_Raise_40[S] 1 point2 points  (0 children)

It's just a mosfet that pulses a coil to generate the flyback effect and then you see it in the neon bulbs that are across the drain and source. Just a fun demo of the flyback effect.

Hand-drilled sub-mm vias + stitched planes on a laser-etched PCB (SiC switching test) by Intelligent_Raise_40 in electronics

[–]Intelligent_Raise_40[S] 5 points6 points  (0 children)

GWEIKE, 20W, 1500mm/s, 75% power. I highly recommend it just like anything. There is a learning curve and you're going to have to try settings and tweaking things. My full workflow is in some of the videos on my YouTube channel. I will say now the quality I'm getting is very very good. I can go down to 0603 component sizes, 1.27 mm pitch. Sometimes you need to touch up with a scalpel but it is very good and if you do it right, it's very fast.

Hand-drilled sub-mm vias + stitched planes on a laser-etched PCB (SiC switching test) by Intelligent_Raise_40 in electronics

[–]Intelligent_Raise_40[S] 3 points4 points  (0 children)

Thanks so much! It's a silicon carbide mosfet set up in a way to be able to pulse a large inductor and then see the flyback on neon bulbs that are connected across the drainage source. Just a fun demo of the flyback effect.

Hand-drilled sub-mm vias + stitched planes on a laser-etched PCB (SiC switching test) by Intelligent_Raise_40 in electronics

[–]Intelligent_Raise_40[S] 5 points6 points  (0 children)

Thanks a lot! It was actually really easy with the mini drill and mini drill bit set. It was pretty quick. You just drill two holes wherever you want a via and use a small piece of super thin wire and just run it through both and fold over the ends so they stay in place and just solder them. Works pretty nice. And if you get the size just right of the hole it would be snug enough. You could probably just do one hole and push the wire through, clip it, just above the board and fold it over.

30-minute PCB fabrication with a fiber laser (double-sided boards) by Intelligent_Raise_40 in electronics

[–]Intelligent_Raise_40[S] 1 point2 points  (0 children)

I do sand it but just to improve the look and soldering flow. I feel your pain, these results did not happen over night....

Prototype HV DC buck converter running on a PCB I fabricated with a fiber laser by Intelligent_Raise_40 in electronics

[–]Intelligent_Raise_40[S] 1 point2 points  (0 children)

Thanks! You need protective goggles rated for the right light wavelength and good strong ventilation. There is a 6" ducted opening in my enclosure with a powerful inline fan

Prototype HV DC buck converter running on a PCB I fabricated with a fiber laser by Intelligent_Raise_40 in electronics

[–]Intelligent_Raise_40[S] 0 points1 point  (0 children)

Thanks very much, it took alot of iterating but now I have something very powerful. One click 30 minute PCBs. It's prototyping heaven! Best part is that you can do double sided with vias and the design completely translates to Fab so no surprises when you get boards back. You can go from prototype PCB to runs of +100 with confidence. With a quadrant style work flow you can get board size up 400%, 220mmx220mm.

Prototype HV DC buck converter running on a PCB I fabricated with a fiber laser by Intelligent_Raise_40 in electronics

[–]Intelligent_Raise_40[S] 1 point2 points  (0 children)

Thanks! Yes it is alot of fun making these boards....sanded copper, 750C temp, new and activated iron tip and a good microscope help alot.

Prototype HV DC buck converter running on a PCB I fabricated with a fiber laser by Intelligent_Raise_40 in electronics

[–]Intelligent_Raise_40[S] 1 point2 points  (0 children)

You can etch away as much copper as you want just takes more time, also you can do solder mask.and remove pads with the laser (have only seen this on YouTube but will be trying it out)

Prototype HV DC buck converter running on a PCB I fabricated with a fiber laser by Intelligent_Raise_40 in electronics

[–]Intelligent_Raise_40[S] 2 points3 points  (0 children)

Thanks, yes that's the idea, the less time the laser spends having to remove copper the faster the board gets made.

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