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Tom Stokes
2.3K posts

Tom Stokes
@tomstokes
Startups, engineering, software, hardware, wireless, product, management. | Keeping the signal-to-noise ratio high.
Salt Lake City, UT Katılım Ocak 2009
1.4K Takip Edilen809 Takipçiler

@MehdiHacks P1P is good value for the money.
For a first printer I would suggest an A1 or A1 Mini. They maintain resale value surprisingly well. Sell it off once you have more experience and know specifically what you need from a higher-end printer.
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@bznotes Getting two land-based connections with a router that can do failover is the key to reliability.
Starlink is great for remote areas, but if you're in a city the landline options will usually be an order of magnitude faster.
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@ProgramMax It’s also a flex process, so a rigid carrier or stiffener would be necessary. Hand-soldering PET substrates is also likely to be a disappointing experience due to the low heat tolerance. Going to look cool for applications where it can be put to use, though.
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Very cool.
Gotta abandon the ground plane. But when that isn't needed, heeeell yeah.
Tom Stokes@tomstokes
The new translucent flex PCB substrate from @JLCPCB looks amazing. I need to find an excuse to make a translucent PCB now.
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@tomstokes @JLCPCB As soon as you will add insulation in between layers it's not going to be translucent.
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The new translucent flex PCB substrate from @JLCPCB looks amazing.
I need to find an excuse to make a translucent PCB now.

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@r0b0t_sp1der @JLCPCB It is. It’s a PET flex PCB. The first image I posted was a marketing render (sorry) but the rest of the thread shows some more photos. They have some PCBs mounted on translucent plastic carriers which makes for a nice effect.
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@QVHenkel @tomstokes @tomasmas @JLCPCB This *looks* AI to me : vias with incoming trace but no outgoing ones.
Those two rows of “dots” that bright up. Can’t be LEDs. Seems like test pads or mounting holes but they glow xD
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@QVHenkel @tomasmas @JLCPCB Yes, it's a standard PET flex PCB. I should have picked a better screenshot from their marketing video.
They show real boards attached to rigid frames which is a nice effect.
They show one butterfly-shaped board that might not have any stiffener, but they're holding it gently


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@tomstokes @tomasmas @JLCPCB Nice! Are there some real pictures of transparent boards they've produced or only AI renderings? These kind of transparent flex boards have been around for a while but it would be cool to know how their product looks like
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@Yuyuko_boobs Transparent flex PCBs aren’t new. It’s been available from several companies, but it’s new to JLC. They have some limitations around soldering temperatures, among other things.
More videos: instagram.com/reel/DLTrYB-q5…
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If you believe this I’m genuinely sorry for you
Tom Stokes@tomstokes
The new translucent flex PCB substrate from @JLCPCB looks amazing. I need to find an excuse to make a translucent PCB now.
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@Beanmin_2 @JLCPCB They say PET. Usually PET doesn’t handle soldering temperatures well but they claim it’s SMT process compatible.
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@fishPointer The Engineer PAD-02 set is my preferred tool for most cases. Far better than the cheap tools, but not as expensive as the vendor specific gear. Includes different tool sizes for a range of connectors. engineertools-jp.com/product-page/p…
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i need like the beginner's guide to getting cracked at crimping. what do i need to quickly and reliably make beautiful and perfect custom cables
Sebastian S. Cocioba🪄🌷@ATinyGreenCell
@fishPointer Absolutely. I designed my entire turbidostat robot with hand crimped cables and not only saved money but also have far less excessively long jumpers.
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@phethers If you have sticker shock, you’re probably looking at the right thing. It’s not a cheap system. The user manuals would give you an idea of the process they use, though.
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@tomstokes Unless I'm being silly and looking at the wrong thing
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Weeks objective: develop a step by step procedure for making 2 layer PCBs in the home lab. Right now my biggest bottleneck is the lead time for new PCBs, it's at least 1-2 weeks per board, I need this to come down to ideally same day. I'm going to be using a fiber laser, cheap (sub $200) table top CNC router for most of the work.
I need to achieve the following design rules for the end boards:
- 4mil/0.1mm track spacing
- 0.2mm via holes (can be flexible on this)
- 70mmx70mm PCB size
- 2 layers with through hole plating
- solder mask on both layers
I think I've got a decent plan to execute on this, the hardest part is the through hole plating, but very doable.
Everything is arriving today/tomorrow/thursday, and I've been wanting to do this for over a decade, engineering manufacturing is extremely fun
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@chrysb @joinrosebud For many working at companies with GitHub Enterprise, showing contributions on their profile isn't possible (unless their company admins enable GH connect and some options, which most don't).
The GitHub contributions chart is also easily cheated.
Not a good candidate filter.
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Over 300 candidates applied for engineering roles at @joinrosebud, and 99% of them made the same simple mistakes.
🤦🏻♂️ Here are 4 egregious yet easily fixable mistakes you might be making, and what you can do to stand out instead:
1. No GitHub link? Instant rejection.
Every engineer should have a Github profile that demonstrates their work and contribution history. Huge miss not to include it in your resume.
2. Your GitHub contributor chart has low or no activity? Instant rejection.
Turn on private contributions to make sure visitors can see all of your hard work. This page literally shows how many reps you’ve put in. If your work is in another place like bitbucket, call it out.
3. Your cover letter is clearly written by AI? Instant rejection.
Any intelligent recruiter will be able to sniff out your generic AI cover letter. Nothing screams “I don’t care” more than sounding like every other AI application.
4. Your cover letter doesn’t specifically address why you want to work for this particular company. Instant rejection.
At least use the product and provide a specific insight or assessment to stand out from AI noise. If you demonstrate a genuine interest in the company, it will already put you at the top of the stack.
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Examples of things that stood out:
1. One candidate built a prototype of a feature they’d like to see in Rosebud
2. Another candidate shared a heartfelt story about how Rosebud impacted their life
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In the age of AI cover letters, it should be super easy to stand out. When recruiters scan hundreds of applications daily, these small details are your opportunity to shine in a sea of sameness.
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@fishPointer Yeah, we know. Those benchies aren't going to print themselves.
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