Tootfinder

📻 Flexible Receiver Antenna Prepared Based on Conformal Printing and Its Wearable System
#electronics

Ey, die Kastanie hatte ich für mich gesammelt!
#squirrel #eichhoernchen #electronics

🧱 Making Printed Circuit Boards with Wild Clay
#electronics

Clay PCB Tutorial — feministhackerspaces
Clay PCB Tutorial MaKING Printed Circuit Boards with Wild Clay It is an open secret that the hardware in our...

⚡ Green electronics thanks to biodegradable circuit boards
#electronics

Green electronics thanks to biodegradable circuit boards
They are the "heart" of every electronic device, from laptops to electric toothbrushes: printed circuit boards, also known as PCBs. These rigid boards are covered with copper traces and soldered electronic components and are usually of a telltale green color. They are, however, not exactly environmentally friendly.

Went ahead and cleaned off the workbench as it has the tendency to accumulate random electronics on it. Still need to get the computer hooked back up, but it's nice to get back to soldering a few things here soon.
#electronics #workbench

Why am I using a squirrel as my new logo? That's why. Obviously, squirrels and electronics go well together.
And no, I don't trick her into doing that, I was not expecting that at all 😅
#electronics #oscilloscope

A little more progress on the Beat Bike… switch connected to controller with TRS cable.
#maker #diy #electronics

🍪 Gate-level emulation of an Intel 4004 in 4004 bytes of C
#electronics

Yay, getting all the wireless controllers cleaned up. Had to replace a dead battery in one of the PS1 controllers, but they're looking pretty good now.
#electronics #retrogaming

It looks so simple, but as a practical matter it took a surprising amount of time and effort to locate parts locally and rig up this temporary replacement switch for my wife's longarm quilting machine so she can continue working while we wait for the correct switch to arrive from DigiKey.
#repair #electronics

Done with this project, everything except for the audio port worked (not a huge issue, but annoying). Passed in CGA via the DB-9 connector, RGB via the BNC connectors and the Sony PVM was more than happy to display the signal.
#electronics #cmptr

I just spent way too much time cutting, stripping, and straightening wires…
#maker #diy #electronics

Update on the Sony PVM-2530: probably should use RGB before diagnosing color issues (e.g. luma). I did have to get in my custom CMPTR board to do it, but everything lined up perfectly. I do need to fix the geometry a bit, but for right now I think I'll be playing a few games after work.
#electronics

Alright, the good news is that I've mostly corrected convergence on the Sony PVM-2530 and it looks tons better. The bad news is that I'm getting shadowing/bleeding on changes in colors which wasn't apparent due to the horrible convergence. However, it's progress. I think it's a cap issue...not sure where though.
#electronics

☎️ Did You Know That There Are Camera-Less iPhones?
#electronics

Did You Know That There Are Camera-Less iPhones?
If you work in a nuclear power plant, you might have a weird iPhone like this.

First power on of the Sony PVM-2530: major convergence issues. Fortunately I have the service manual and this should be very correctable. Still need to get the speakers cleaned up and attached to the PVM.
#electronics #crt

🫠 DissolvPCB: Fully Recyclable 3D-Printed Electronics with Liquid Metal Conductors and PVA Substrates
#electronics

DissolvPCB: Fully Recyclable 3D-Printed Electronics with Liquid Metal Conductors and PVA Substrates
We introduce DissolvPCB, an electronic prototyping technique for fabricating fully recyclable printed circuit board assemblies (PCBAs) using affordable FDM 3D printing, with polyvinyl alcohol (PVA) as a water-soluble substrate and eutectic gallium-indium (EGaIn) as the conductive material. When obsolete, the PCBA can be easily recycled by immersing it in water: the PVA dissolves, the EGaIn re-forms into a liquid metal bead, and the electronic components are recovered. These materials can then b…

The IF-C01COMG card came in and it works perfectly. I'll put it through its paces after work, but for now the picture is great. Easy to install and worth every penny.
#electronics #retrogaming

Get excited, work on a project, get distracted, work on other projects, remember the original project, get back to working on it…
#diy #maker #bikes

🍪 Scientists create world's first chip that combines 2D materials with conventional silicon circuitry
https://techxplore.com/news/2025-10-scientists-world-chip-combines-2d.html

Scientists create world's first chip that combines 2D materials with conventional silicon circuitry
For the first time, scientists have created a fully functional memory chip only a few atoms thick and integrated it into conventional chips. This advance could pave the way for more powerful and energy-efficient electronic devices.

Hrmm, I'm having an urge to rewrite the Extron VTG-200 software and make it a bit more recent. The RS232 controls seem to be well documented...
#extron #electronics #programming

💥 Engineers overcome radiation challenge with custom silicon chips
#electronics

Engineers overcome radiation challenge with custom silicon chips
The Large Hadron Collider (LHC) is tough on electronics. Situated inside a 17-mile-long tunnel that runs in a circle under the border between Switzerland and France, this massive scientific instrument accelerates particles close to the speed of light before smashing them together. The collisions yield tiny maelstroms of particles and energy that hint at answers to fundamental questions about the building blocks of matter.

I think this will work out, still need to fix the silkscreen and explain the settings switches somewhere on the PCB.
#electronics #kicad #sony

A quick schematic for a CMPTR breakout PCB. This really only handles RGB, but should get the job done for the CMPTR connector on the PVM-2530.
#electronics #crt #sony

Welp, went ahead and broke out every signal that goes over the CMPTR connector. All of the signals go to BNC connectors except for the audio which gets a special RCA connector. There is a bank of DIP switches that pull selector signals to ground as well. Still need to get all of the signals routed, but that should be pretty straightforward.
#electronics

So after some thought, I think I'm gonna break out all of the signals coming out of the CMPTR connector. Shouldn't really increase the cost of the device, and it might be useful for troubleshooting if you could inline the board so I'd have to add another DB-25 connector.
#electronics #sony

🥃 Transparent PCBs Trigger 90s Nostalgia
#electronics

Transparent PCBs Trigger 90s Nostalgia
What color do you like your microcontroller boards? Blue? Red? Maybe white or black? Sadly, all of those are about to look old hat. Why? Well, as shared by [JLCPCB], this transparent Arduino looks …

Repairing an HP 5370A Time Interval Counter
#electronics

Documentation: not the most fun thing in the world to do, but it does make things much, much easier for the next (or current) person. Since the NESessity NESRGB combo doesn't use the standard `R`, `G`, or `B` pads off the NESRGB, figured it would be better if I showed where exactly you need to pull the signals off the NESRGB.
#electronics

Okay, got the new version finished. The BNC connectors are for RGB Sync, and the other two BNC connectors were removed and replaced with a DB9 connector for the glory that is CGA. Kept the RCA audio port on the side of the board because audio will mostly go in directly to the PVM. Overall I'm much more satisfied with this layout and connector choice than the previous version.
#electronics

🧠 Electro-optical Mott neurons made of niobium dioxide created for brain-inspired computing
https://techxplore.com/news/2025-08-electro-optical-mott-neurons-niobium.html

Electro-optical Mott neurons made of niobium dioxide created for brain-inspired computing
Over the past decades, engineers have introduced a wide range of computing systems inspired by the human brain or designed to emulate some of its functions. These include devices that artificially reproduce the behavior of brain cells (e.g., neurons), by processing and transmitting signals in the form of electrical pulses.

After doing some digging on the CMPTR 25-pin interface, I think I'm gonna change the design of the CMPTR adapter. The IBM Luma pin and HSync pins kinda scream CGA (e.g. IBM 5151) so I'm gonna rip out two of the BNC connectors and run RGB CSync on one side via 2x2 connectors. Beside those will be a DB9 connector running RGB, IBM Luma, H/VSync which makes a lot more sense.
#electronics