Відео

👍👍👍

Really nice video, thanks for sharing. One Question though, how do you avoid solder mask from going inside the holes when applying it in the end? in my case it got stuck in some holes and even though it wasn't cured because of mask blocking the pads, it didnt dissolve by itself and i had to use a drill bit to poke it out. probably cause i had too small holes for this?

Well explained about the PCB process.

Thanks for the video! Very Good and Learned something new today!

Case is connected to the positive terminal because of what these lasers are mostly used for. They are mostly used for laser pointers and these are usually powered with coin cells. Coin cells have positive electrode on the outside. Thanks to that, positive of the diode and positive of the cell can be connected with metal case of the pointer, making the device simpler and cheaper. Cheapest modules have a simple resistor instead of the regulator.

Great info, thanks! I didn't know what was in these cheap devices, so I bought a few individual laser diode components. They have the built-in photodiode for monitoring output, but I wanted to try using it for self-interferometry measurements. One laser diode has that weird arrangement with the case as common anode, so I don't know how to work with that. My other is common cathode :) But I realised I needed a heatsink & optics to focus the beam, so bought a cheap case+lens kit. Now I need a small vice to press the diode into the fitting :( And for some reason each of these parts are more expensive than a pack of the cheap modules you're using :(

I attempted this via the I2C bus from an ESP32 to modulate the diode. I then added 10 diodes on the subsequent additional multiplexes to light up an oak tree for Christmas in the wood behind us. All rather pointless but fun nonetheless!

will this flash brighter under intense impact?

Awesome !

It works, but I have to prepare electroless copper solution each time. In your guide you say that I need to acidify it after use with H2SO4 and make it basic using NaOH when taken out of storage before next use. Can you provide exact pH values?

Would you consider making a video on the synthesis of electroluminescent phosphor? It is a very cool technology.

you are smart man, great work..

That's how a car horn works.

Niceeeeeeee🔥

great hack. thanks for sharing!

Its even tuneable if you add some mass to the cone.

If you're curious what does the waveform looks like I measured it with an oscilloscope ua-cam.com/users/postUgkx-uD0CHLhRvanLAB8pf57c0F2gAFuoBfC

I was half expecting you to reveal a small relay behind the speaker cone when you turned it over. (Relays by themselves can be wired as buzzers, of course.) I don't know if a relay counts as an active device.

Is this palladium based activator solution and electroless copper bath stable and can be used for months? If not then how manufacturing factories use this solution for long time?

From Iraq 🇮🇶

Nice experiment. I had the idea to put lithium in a tube, seal it and create a low pressure discharge tube without a vacuum pump. Only argon, hydrogen and ammonia(from lithium nitride reacting with water vapor) should be left.

Your process is very expensive because you use pdcl2. I have another solution to use AgCl for activator.

please tell me is the palladium activator solution colloidal or a well mixed solution?? yours looks well mixed but I have tried it is always colloidal.....kindly clarify

Nice tube! I did something very similar using titanium wire to act as both a feedthrough and to capture residual gas by sputtering. Titanium happens to be pretty well matched to soft glass when it comes to expansion, making it pretty simple to create good seals. www.dropbox.com/scl/fi/zq9pqlwfj9c97pr1ohukd/2021-10-08-23.14.52.jpg?rlkey=g6nkuw43651zwmnu1annhoaau&dl=0

Very cool. I didn't know you could use magnesium as a getter so easily, good to know!

Neat....cheers !

The yellowish collor of the Paladium Solution is because the chemicals in the solution are reducing and they need to be completed again to original levels.. normally adding some more Palladium regularly... there are some lab tests to detect what needs to be added to solutions be its a little complex to explain here...

incredible process, im really frustrated with my boards not having hole plating. thanks so much for this!

I miss chemplayer background song ❤

Acido ascorbico , precipita la plata?.

for electro plating use a coffee filter and wrap the anodes in it to catch the large chunks of copper (do not wrap the PCB) i myself use a laser to etch double sided pcbs , i use flatcam and Lightburn to generate the cnc job , i then take a cheap pcb with copper already in it , coat it in spray paint ,and then burn the negative of the traces of the pcb on both sides with the laser , then i etch it ,and give it a green coat of paint like a solder mask , and then burn away the green paint to reveal the solder pads . its less involved since im bad with chemicals ,my reason for doing this is that shipping from pcb way or any other company is 25 $ plus so i just do it at home

Hello, Are there any substitutes for PdCl2? I can't find it at an affordable price where I live. (the only seller charges an arm and a leg for a gram of it)

An it would have been Educating if we told an shown what was the liquid in the little Amber bottle that you mixed with the Sulfur. You turned the bottle around so the label was hidden. I couldn't understand most what you were speaking. 😢

do i need both electroless and electrolythic copper plating for connecting vias or can i just use one of them

... Love to see more ideas with glass

The Paladium Activator sometimes turns to a yellowish transparent collor... this case You just put it inside a glass flask and this flask inside another conteiner (or a Pan for example) with boiling water for some 20 minutes, 30 minutes until the solutions turns to dark brown collor... I have made it to a lot of solutions of Paladium and it worked very well..

Bello! Non vedo l'ora di vedere il tubo riempito di Neon. A che tensione lavora l'alimentatore?

Do you know why the lamp makes these discrete lines? That increase in number as the pressure increases, and have this "stepping" behavior (appearing or disappearing 1 line at a time) ?

You are ever one step forward but you should make videos more frequently.

Subtitle nobtranslate sir😢

sir thank you so much for making this love you so much plz one question Sir i made zinc sulphide with NA2S+ZNSO4= NASO4+ZNS CAN I USE IT TO MAKE GLOWING POWDER PLZ TELL SIR

Bel Canale! Continually cosi!!!

👏

based

Why is a quartz tube required to dope the zinc sulfide?

Nice Video, thank you very much! After many years of using "Toner Transfer" to make my pcb i now bought a UV DTG Printer and directly print the mask for the design on the board. After etching i print the "soldermask" to the pcb too. The only thing i need to get done now are the vias. Your solution looks perfect but i'm a bit worried about the Formaldehyde. I'm not a chemist, is it possible to replace it with a less toxic ingredient? Triton-X100 is even a problem in the EU, it is banned by REACH since 2021. Is there an alternative available?

did you test your vias with current? i found it very useful to do this test in the developement of my process my 0,3mm vias usually can take about 5A, 1,2mm vias could conduct even more then 25A of current with a test batch and the vias fusing at about much lower currents, i found it useful to use that as an indicator also it turns out: you can fairly use a lot of other colloid solutions for activation (even copper in NaBH4 itself), it requires an additional etching and desmearing step+ sensitation steps tho

Thanks for the detailed video, we are making this today in my physics university class. Please could you let us know if there is a way to make the ZnS:Cu into a paste/liquid to make it stick to the bottom of a glass conical flask to form a phosphorescent screen (without dripping down the sides if it is moved around). We are making a DIY cathode ray tube :)

Can this process work with electroless nickel solution?

very well describe.. thanks a lot sir.