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#pcb

3 messages3 participants0 message aujourd’hui
Public
dorotaC

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.

A glamour shot of an old PCB full of through-hole components.
A bird's eye view of an old PCB.
A view of a backside of an old PCB, full of traces. It shows pads for slotting the board into something.
#electronics#computers
Suite du fil
Public
Piotr Esden-Tempski

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

KiCad PCB layout. Showing the top red layer and dimmed blue bottom layer. The board is mostly a bunch of 6pin XDFN packages and a pile of 0402 passives. A bunch of the via are placed in pads. The via are also smaller than in the previous layout at 0.2mm drill and 0.1mm annular ring.
A répondu dans un fil de discussion
Public
Antoine - Software therapist

Did I spend my evening designing that board, placing and routing 129 leds by hand?

Yup, I absolutely did :)

I kinda like that kind of repetitive job, I find it to be a good relaxing time (once every 6 months, I would definitely learn how to automate it if I had to do that every day :)

A screen capture of KiCad pcb editor showing the design of a pcb matching the design in the previous vector graphics.
#LedClock#pcb#kicad
A répondu dans un fil de discussion
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Antoine - Software therapist

Well, technically it worked. The laser cut can go through the pcb (if there is no copper).
But the process is very slow, and the result badly burnt. I'll have to figure out something else.

I think I started working on the design of a linear clock in 2016. Over the years, I made at least 5 different designs, and countless color pattern experiments. I guess the next version can wait a little longer :)

A very close up picture of a green pcb. There is two 5x5mm square holes. The side of the holes are charred, and there are burn marks one the pcb.
#LedClock#LaserCut#pcb
Public
Kris\Slyka

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

A small copper coated glass slide covered with exposed etch resist.
The same PCB after developing the etch resist. It's looking pretty good.
Same PCB after etching. A lot of the copper around the edges has been eaten away where it shouldn't have and a lot of the small features have delaminated
A photo of the back side of the PCB, showing the glue layer (or what's left of it) through the glass. There is a lot of corrosion on the back side and a lot of the glue layer has been stained by the copper chloride etchant.
#electronics#diypcb#pcb
Public
Roger Light

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?

Black circular circuit board approximately 9cm in diameter, with a grid of over 300 LEDs on, also in a circle. There is a rectangle in the middle with no LEDs, like a pupil, but with a microcontroller and other small components.
Back of the previous circuit board, which is entirely clear of components apart from a single power connector. The artwork has "Aperture Science Laboratories" and "Adventure core" written on, and has the Portal game logo.
The front of the same circuit board with the green LEDs shining
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AISLER

"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

DDoS PCB
#eu#electronics#pcb
Public
Cliff

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!

The image shows the entrance to Pier Park in Panama City Beach, Florida. The entrance is marked by a large, white archway with the words "Pier Park" prominently displayed in blue and purple letters, with a stylized sun and beach ball logo above the text. The archway is supported by two tall, white pillars with a wooden texture. Below the main arch, the text "Panama City Beach - Florida" is written in smaller white letters. The sky is clear and blue, indicating a sunny day. Palm trees line the sides of the road, and there are puddles on the road, suggesting recent rain. In the background, there are buildings with blue and white facades, typical of beachside architecture. The road is empty, with no visible vehicles or pedestrians.
#PCB#PanamaCityBeach#Florida
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