Post your DIY PCBs in this thread
This one took 40 minutes to expose, develop and etch and 3 hours to drill and solder. It sucks not having a CNC router.
Can you spot the bridges? I bet you can't. There aren't any.
Toner transfer on one layer board. One of my first SMD experiments with different trace widths and isolation. Came out so-so. The smaller pads are for 0805 components and the IC was SSOP iirc. Kept this particular one as a reminder to pay attention to avoiding rookie mistakes: can you spot it?
>>903502
both
>>903544
I bet you had a hell of a time soldering those ICs. Nice work anon!
>>903543
Two pads at the bottom left leaving the PCB area? A broken trace in the mid right?
>>903547
The pads and traces are fine. The error is further down and accountable to feebleness of mind rather than poor craftsmanship. Hint: check out the label ;)
>>903447
atmega16a?
sorry no pics
>>903543
rekt
I did the same thing with one of my recent "light on a stick" boards. The irony is that it still would have worked, except for the one SMD chip driving the thing.
>>903549
Lol its printed mirrored?
>>903625
Yep.
polite sage
>>903564
Atmega8
>>903685
What do you do for reflow anon? And what solder paste do you use?
>>903694
that looks like small tip soldering iron to me, not paste.
All made from salvaged parts, including the bit of wire on the regulator.
>>903447
>It sucks not having a CNC router.
that's why I almost always go veroboard, PROTO777, breadboard, or I have the board made by some ebay company.
I'm more than anything impressed by the lack of CNC mills that have come out of the reprap community.
Are there any decent DIY pcb mills out there that are around $200?
>>903704
nope but why not build one yourself if you dont need a big area you can build one for under 200$
not included the spindle
>>903702
You are right. Reflow would destroy this board, but I'd use it if i were using aa proper FR4 PCB.
>>903544
This has got to be shopping cart bro right?
Is it possible to recreate a board and reuse the same parts etc?
>>903753
Yes if you don't damage them
Looks really nice OP
I'm still stuck with toner transfer, which is crap since holes start to appear way before the toner runs out, it must be more than half filled to make a good print, at least if fast and quite simple.
You also have to use thick traces just to be sure.
Pic related, a clock I'm making, with two bridges to connect two pins because I forgot to connect them and four more bridges on the top. (1x 8pin IC and 2x 16 pin IC and a 14 pin display at the top)
test boards (for testing :)
>>904224
>RF modules
Watchu doin' thar? :)
>>903788
It's a low quality picture, so I can't be sure, but don't you think those two uninsulated bridges might just have a chance of shorting on the other pins they're running near?
>>904249
Testing the testing boards :^) for a 4km link
>>904278
frequency?
>>904299
dont test them on a regular basis sorry
>>904261
It's standard enameled copper wire, I just removed the enamel at the very tip where they've been soldered.
>>904314
>enameled copper wire
i love you anon
Not hand made PCB, but self designed and self soldered.
It is a 4 layer PCB, and the circuit is the power stage of a bidirectional DC/DC converter.
>>904299
916 Megahurtz
I know nothing about electronics and making PCB's.
Are there 3D pcb's being made by makers?
>>904470
>>904470
>Are there 3D pcb's being made by makers?
What? i didn't understand the question
>>905503
bump
>>905503
Come on, google it.
>>905503
Bump
>>905503
Google is your friend, friend.
Things to google:
>Home-made PCBs
>Making PCBs at home
>PCBs using toner transfer method
>PCBs using photoresist
etc.
>>905593
thanks
>>904466
is that a clock? i see some photoresistor near a pot
>>906655
Yes, the display section with an automatic brightness control
>PCB etching failed horribly
God I fucking hate pre-sprayed boards, always turns out shit.
anyone know where to get sodium persulfate for etching in ireland?
Guys, do you know a way to surface mount solder on milled circuit boards? I tried it but the traces ripped up as soon as I applied heat.
>>907767
- make wider traces so you dont damage the glue bond as much
- find better quality boards which are bonded better
- use lower-wattage iron
- pre-tin the copper using a heat gun and solder paste
>>907781
I tried all of that but I think the board I was using was just shit. I have never had trouble surface mount soldering before but when I did it on a milled board the traces just lifted immediately even with preheating the board and tinning the traces. I'll only photoetch from now on.
>>904299
Not now, Kenneth!
>>907034
Well I had another go at etching today.
Turned out really well.
Here's the first attempt.
>>909415
And here's the good one.
I've used the exact same procedure, same amount of time under the UV light, same developer, everything identical up to the point of etching where I opted for a stronger mix which turned out great.
>>903543
Looks like you forgot to mirror the image before printing it.
Note the bridges -- I fucked up and used transistor footprints that had the C and E legs the other way around compared to the actual components. Whoops. Soldering that was NOT fun under time pressure.
> made the board layout
> drilled, etched etc everything myself
> placed all the components myself
> finish soldering
> program the chip
> displays nothing
> 30 minutes left to hand in the functioning board
>>909948
Nice
>>909992
Right?
Also I found a video from when my group stripped the mask used for the tin plating process after etching.
>>904466
How do you align the two sides?
>>907767
Use the CNC just for drilling, not making the traces
>wet etches
not even once
>>910177
thermal resistance and reliability, i made a mistake when forgot to bend the regulator leads for alivite the termal cycling but i expect this project to last at least 30 years.
>>910171
with some backlight and marks at the laser printed sheets, i is a stapler to fix the borders and insert the PCB in between before using a laminator to transfer the toner.
>>904468
Same. I just started courses in electrical and electronic engineering and I know almost nothing about pcbs and circuit logic but wow. I feel the urge to masturbate to this pics
>>903452
>>903453
Here's some from my new project. I'm only using through-hole components and putting everything on a 0.1" grid because I want people to be able to copy my design using only stripboard.
>>910258
>>910259
Sure, Here is a pcb I made. I just didnt have the time to fart around with transparencies and laminates anymore. So I just laid out the components and used a special marker to mark what to keep. Once I was happy with everything. I dunked it in etchent.
