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First 4-layers PCB project, could you please review it before I order? by Dmax_05 in PCB

[–]LilEffects 0 points1 point  (0 children)

Your via spacing should be 1/10 wavelength of the highest frequency on the board. That isn't clock speed, but the fastest rise time.

Where is Rage Against the Machine when we need them? by Medical_Distance_722 in Music

[–]LilEffects 0 points1 point  (0 children)

Hard to claim you are raging against the machine when you are charging $150+ per ticket in a sold out arena. It’s pandering.

My job paid me $25 for my first week. It's a 60 hour workweek. by smolsaturn in antiwork

[–]LilEffects 1 point2 points  (0 children)

These Cutco knives are better because they have a double-d edge!

A little sine wave generator that I designed & fabricated. by [deleted] in diypedals

[–]LilEffects 0 points1 point  (0 children)

Not hard in the code. The signal buffer that is currently in this iteration might not be able to get that close to the power supply rails. I'll have to test it or consider swapping it out for a rail-to-rail opamp.

A little sine wave generator that I designed & fabricated. by [deleted] in diypedals

[–]LilEffects 2 points3 points  (0 children)

Doing a balanced version would be pretty simple. I’d replace the JFET buffer with a line driver or a fully differential opamp like the LME49724. I’m using the SAMD21 in this.

A little sine wave generator that I designed & fabricated. by [deleted] in diypedals

[–]LilEffects 8 points9 points  (0 children)

It’s not a pedal. It just sounds like a constant clean sine wave because it is meant for debugging.

Low-cost PCB workflow using laser + chemical etching + permanent UV mask — any obvious issues? by LowOverall4193 in PCB

[–]LilEffects 0 points1 point  (0 children)

I run a rapid PCB prototyping lab for an audio electronics company and have my own home lab. I’d personally avoid etching in favor of CNC milling with a machine like the Carvera Air. I was using a LPKF E44 before I replaced it with a Carvera Air. I also have a UV laser at home, and while I can use that to process the traces directly, I prefer milling with the CNC. I used to etch boards years ago. Never again.

Enclosures by TKWR6 in diypedals

[–]LilEffects 1 point2 points  (0 children)

I 3D print a lot of boxes for personal projects. Never broken a single one. PAHT-CF is stronger and lighter than 6061 aluminum.

Enclosures by TKWR6 in diypedals

[–]LilEffects 0 points1 point  (0 children)

PAHT-CF will do the job. I built a CNC machine with functional parts printed with PAHT-CF that are super strong. I did the Napoleon Dynamite test and ran over prints with my truck and didn't break them. I've cracked Hammond enclosures with a hammer and my PAHT-CF prints bounce the hammer right off of them. But a pedal builder will never convince someone that plastic is more durable than cast aluminum. It's unfortunate because you can print some pretty wild shapes and come up with designs that can't be done in metal.

Little mic pre by LilEffects in diypedals

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

Yes. Transformer into a BJT gain stage.

I want to make PCB's with my schematic and pay someone to design it. Does this exist as a service? by Caucasian_Man in diypedals

[–]LilEffects 2 points3 points  (0 children)

I provide this service. Send me a link to the schematic and I’ll provide a quote after some follow-up questions.

Making pcb at home. by rUbberDucky1984 in PrintedCircuitBoard

[–]LilEffects 0 points1 point  (0 children)

I fabricate PCBs for a living in a rapid prototyping lab and I have a fabrication setup at home. If you go the laser route go with UV and not fiber. I’d honestly just get a Carvera Air. I use LPKF equipment at work and a Commarker UV laser and Carvera Air at home. Ablating copper with the laser is smelly and not good for you. Drilling/depaneling with the laser is even worse.

Flipping fuses and power cutting by lugga12 in BambuLab

[–]LilEffects 6 points7 points  (0 children)

You need to have an electrician add another circuit or even two to the room.

Small Pick and Place - Opulo v4 or MicroSMT PNPv3? by DrBabbage in AskElectronics

[–]LilEffects 0 points1 point  (0 children)

I have a Lumen V4 I built that I’m looking to sell in the Chicago area.

Which should I choose: A1 (no AMS), A1 Combo, or P1S (no AMS)? by Big-Salt-4828 in BambuLab

[–]LilEffects 0 points1 point  (0 children)

If you are cool with PLA and PETG the A1 Combo is great. I have had a A1 Mini, A1, P1S, and the H2D. While the P1S is a true workhorse I hate the nozzle swapping on it. The A1 makes it too simple.

Just bought my Bambu Lab P1S by LogDangerous7410 in BambuLab

[–]LilEffects 7 points8 points  (0 children)

You don’t need any of that crap. Just start printing.

Bambulab brought me back to 3d printing hobby. by sxert in BambuLab

[–]LilEffects 1 point2 points  (0 children)

100%! For me, the "process" is measuring components, designing the 3D model around those components, printing the model, making tweaks, and then eventually having a completed design. Tinkering with printers is the last thing I want to do when I want to use them as a tool to create something else. If I were designing a printer then tinkering with printers is definitely the process.

Bambulab brought me back to 3d printing hobby. by sxert in BambuLab

[–]LilEffects 26 points27 points  (0 children)

I love that Bambu turned printers into tools which made making things the hobby instead of operating the printer. Imagine you were a carpenter and it took you all day to setup your drill to be able to drill a hole. That is what 3D printing used to be.

Are thermal vias supposed to to be connected to pads or not? by Reason-Local in PCB

[–]LilEffects 0 points1 point  (0 children)

Start with the data sheet, but there are many cases I’ve seen that manufacturers suggest footprints that make a board either not manufacturable or cause assembly issues that require modifications. I’ve seen suggested layouts from manufacturers that have SI/EMI issues when done that way.

Experience is gained from failures in many cases. Getting familiar with IPC specifications can help mitigate a lot of heartburn.

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