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#pcb

2 posts2 participants0 posts today

So I visited someone who used to work at a hospital in the '90s and I got this hand-made #vintage #pcb .

The writing is
Coronametrics Front End/Ultrasound
the other side has 02/83 , could be a year.

No solder mask, traces at weird angles, no clear grid, rusty screw.

What computer would it slot into?

There's more in the basement it came from if anyone's interested :P I even saw one with a bunch of DIP ICs.

My PCBs arrived! I ordered 20 and I got 33? Weird. It's like they had some spare space on a panel and just scattered a few around at random?

These are breakout boards for the little ESP32-containing modules I use for various projects. I got tired of mounting them on veroboard. You can buy very similar breakout boards from the manufacturer, but these are simpler and cheaper.

Continued thread

SQUEEEEEZE number 2. I ended up upgrading the PCB design rules to allow for smaller plugged via and using the 0.1mm trace/space rules. The latter is the default offered by JLCPCB these days which blows my mind! The via in pad stuff does not add very much to the overall PCB price when made in quantity anyways. And I can now kick the can of dealing with 0201 down the road a bit longer. (I mainly dread tuning the stencil apertures, the rest is not really an issue.) #kicad #pcb #electronics

ok, copper tape glass PCB test results are in. just did a small test layout with some traces and test footprints. exposure and development of the etch resist went well. 7.5 minutes under my UV box and development in water with a random amount of sodium carbonate in it.

etching went… less than well. The glue on the tape does not seem to stand up to the copper chloride etchant very well and there was severe under etch all around the edges and a whole bunch of delamination. might have to try a different way of attaching copper foil. one option might be to just use the same material as the etch resist as glue…

oh yeah, and even though the glue was kinda destroyed by the etchant there is still a layer of glue on all the bare glass spots :I

I'm immensely proud of my 11 year old who designed his first #pcb in #kicad and the assembled board arrived today. I gave a lot of guidance on the schematic side and practical help for the PCB placements, but it was all him apart from that.

Can you tell what he wants to build?

"Die DOsen Stapler" (DDoS) is a #student robotics team that took part in the Eurobot 2025 competition, marking their first participation in the event.

This year’s challenge, "The Show Must Go On", involved building autonomous robots capable of performing a range of stage-themed tasks within a defined arena.

The team developed their #robot from the ground up: mechanical structure, control systems and electronics.

Images: DDoS

#eu#electronics#pcb

I need some help from those that have been to or live in Panama City Beach, FL.

Tell me your top 3 things that you'd recommend to someone who will be visiting in the near future.

Feel free to also suggest your top 3 restaurants worth eating as well for someone who will be visiting in the near future!

One last project infrastructure post for today. This is the double-double, a tiny PCB for those who enjoy self-flagellation^W soldering practice. The point of it is to help me prototype with stuff that has double rows of 0.1" pins by physically converting them to a more standard DIP footprint on a breadboard.

V1 suggests some tweaks and improvements, so I'll be doing that and will share files for the result.

Good morning and happy Thursday!

How are we all doing today?

@bianca and I booked our vacation last night. We'll be going for her birthday in September. Where are we going you ask? Panama City Beach, FL.

We already have a couple of things planned that we're going to do while we're there, so looking forward to those things as well as some shopping, eating at some new restaurants and of course, laying on the beach!

I normally do my PCBA using pcbway.
But this time around, I've put an RP2350 on the design that (due to an exclusivity contract) meant I had to use jlcpcb.

8 weeks of waiting for chips, and they've somehow broke a GPS chip which means some of my units won't have its GPS feature.

Not a great experience.

Ordered some low effort PCBs from JLC last night.
First time using EasyEDA to do the design, and first time dreading whatever rando-tariff might get applied.

I did notice this time the shipping was $13.71 and last time it was only $1.50 - so perhaps that is to cover the import costs.
Either way the goods price was low so unless they are adding tariffs to shipping, even paying 3x the cost won't be a dealbreaker. Wish me luck!

At #fabacademy one assignment is about electronics production. This documentation by #fablab Kerala in India explores various materials and methods for their suitability in producing effective PCB stencils that can be used for accurate solder paste application. All done more or less before but at the end they use a xtool f1 ultra to solder the components. And that is pretty amazing!

ivy-honesty-3a3.notion.site/St

#fablab #fabacademy #electronics #PCB @hackaday