>still being a slave to PCB printing companies
>not making your own PCBs with cardboard and aluminum foil
>pic related, a 555 timer PCB
You know you can make your own fiberglass backed copper pcbs with a toner printer and an iron right?
That way you won't start a house fire when the highly combustible glues and solvents in cardboard heat up too much
The fuck you're on about? I made dozen of this beauties back in shool and I didn't spend more than I earn on 1 day of job.
$4 for 10 pcbs
and it is <$10 for a 1 gallon jug of muriatic acid for etching (takes longer than other etchants but still works for cheap)
if you dont have your own toner printer you can go to your local kinkos and print out your pcbs tracingsfor like $0.05 each
and if you are super cheap and cant afford an iron you can literally take another one of the unprinted pcbs and a lighter and transfer it that way
make some etchant for less than $10 (all you will ever need, dont ever need more):
as it said in last post you can get 10 good sized pcbs for <$4
are you in elementary school OP?
I tried with tape over foil method
Results are very good, here's a 7 segment display working
Now I can replace the display without disturbing any other stuff too
OP here again
As you all might have guessed this is a proof of concept type of thing, not a complete project, god no. My purpose was only to prove that aluminum foil can be used to replace the wiring in PCBs to make (very) makeshift, but usable circuit boards.
Maybe I'll use this technique to make shitty little kitchen timer kind of thing with an 8051 and foil wires for kicks
The most amazing thing about this was that the foil, a strip of metal about 0.016 mm thick in length was able to deliver enough current to burn a segment of the display. It might have been because the display was really old but nevertheless this was quite a satisfying experiment
Can you use a pencil? The graphite is usually conductive enough. No idea what voltages you are running though. Low voltage will need a lot of pencil, but aluminium foil just looks like a massive pain
I have already tried pencil graphite
The problem is the huge resistance that it offers. While it is good to use graphite on paper as a resistance, it makes a really shit conductor. Pic related, a 0.1W surface mount LED being driven by graphite rails
Im new to pcb, but to me, it looks like you're doing some type of enchantment to a base board. Set up some +1 resistor +1 capacitor +1 gate +5 circuit etc.
Do you guys feel like you're playing a game or practicing alchemy?
Lets say I glue a coat of aluminum foil to a plastic board and use hydrochloric acid for etching since they produce a reaction.
Would it do the trick? or will it just dissolve the whole thing itself?
What material should I use to paint the circuit on the foil?
plastic is very lowly reactive to most acids, so what many people do is take a piece of paper printed from a toner printer (which is plastic that has been forced onto the paper using ionization) then transfer it onto the copper plate using an iron (just turning the paper upside down onto the copper and placing the iron on the back side of the paper)
some people I know use expo dry erase markers for modification
or you can use wax
some people also use photo resist paper that when exposed to certain wavelengths of light deposits a plastic onto the surface of the opposite side of the film (which would be against the copper)
hydrochloric acid will work for all metals, at varied speeds, to quicken the reaction in copper you can add an oxidizer like hydrogen peroxide in a 2:1 H202 to HCL ratio
no you didnt, you are a middleschooler that doesnt have a card of any form yet and cant order a piece of fiberglass backed copper or you simply had no idea you could make your own pcb's and are afraid of being called an idiot so you are back peddling
Links? I can't find anything that's not "print and etch it, nigga!"
The home build CNC machine? Hhmmm... that does sound about right, but how would I bind it all together?
>Being a slave to integrated circuits
>Not building your own PCB using a bunch of transistors put in array
ive been thinking about building my own breadboard with a similar method, but in my opinion this isn't a great idea for non-prototyping and permanent designs because aluminum oxidizes mad fast, has a resistivity twice that of copper and cardboard sucks up water like none other.
>not inhaling your own farts to get high
>not drinking your own piss to stop your thirst
>not eating your own shit when hungry
> having to process before you can do any of what you said
> not snorting Sulphur
> not drinking someone else's piss
> not eating someone else's shit when hungry
Lol how does it feel being tied down?
Back when Minecraft was the hottest game in the block after the discovery of in game electronics and logic gates, I played it just to make calculators and other cool shit. I gradually got bored because it was pretty laborious to build even something apparently basic. During my mania I built graphic cards for 4x4 1 bit displays, full adders that could sum upto 1023 and even a CD like storage medium, god it was such an amazing time
>Back when Minecraft was the hottest game in the block
bitch please it still is the best game ever made
if you want to bind your own, in factories that bind them, they take dense weave fiberglass and just use resin to bond to the copper, so shouldnt be too hard, though it may be cheaper to just buy it unless you want a really weird shape
>Don't forget to dip your foil in copper sulphate or you won't be able to solder to it.
Holy shit that's good to know. I tried soldering to aluminium foil (I had the iron on and there was some there) and was kind of disappointed to see that it didn't work.
Neat. Think I'll make myself a mantis and start experimenting.
I'll begin with the prebound ones and then move to experiment with ways to get the machine to bind them together on its own. Thanks for the info.
>proof of concept
Why the fuck wouldn't it work? This is literally the most autistic thing I've ever seen.
Do you have any idea how little cross-sectional area you need to yield < 1 ohm per meter of aluminum or copper?