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- เผยแพร่เมื่อ 25 ก.ย. 2024
- As always we're sponsored by www.PCBWay.com.... They provided the excellent PCBs used in this video.
Well, I messed up, my latest order of PCBs completely. As a famous engineer once said, "I can't defy the laws of physics!".
I'll go into what went wrong and since I've ended up with a bunch of boards that I can't really use I've done a bit of experimenting with a vacuum stencil holder and the MHP30 hotplate. It's pretty fun stuff.
You can pick up the MHP30 here: s.click.aliexp...
You can watch @UnexpectedMaker show off his vacuum stencil box here: • Vacuum Stencil Bed Box...
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While this might be painful for you, it is important for people like me - to see people with far more skill than I have fail the same way I did (using wrong component in easyEDA library) makes me feel less crappy :) Thanks for posting and also thanks for sharing the info on higher current version!
Thank you! I always think that if you're not making mistakes you probably aren't doing or learning anything.
Yeah, I just failed for the second time a flashing circuit (UART BRIDGE + reset bjt pair) for the ESP32. First time around I used a CH340E, which unfortunately doesn't have the DTR pin. Then the CP2102 I'm using now seems to need a pullup resistor on the rst pin. I forgot to add it as the pin declaration states that it has an internal pullpup, but it seems to be too weak.
its easy to do, even when you work all day and get a salary not to mess up. The problems starts when you keep doing the same thing over and over. Then its time for a new job.
Learning from our mistakes only improves us all; Electronic designs aren't easy with the vast amount of components at play. I like being a domestic electrician because our circuits are so simple.
@@TradieTrev I’m much more comfortable with software - bugs are a lot easier and quicker to fix when it’s just some typing :)
Nice to see the sanity check in action with the paper PCB. It comes out of the printer without the P&P and delays of a real board, so saving time and money in the long run. You can also go through the tracks with a highlighter on it and the circuit diagram as an extra check that the design rules checks you set up in KiCad worked.
You still need a bigger hot plate.
Bigger hotplate is in the works. Just need to make sure I don’t burn the house down!
I've done the whole wrong footprint song and dance before lol. It's sort of a necessary ritual to perform at least once for the hobby.
Indeed, I think the magic smoke demands a certain amount of blood or it escapes.
Thanks for showing that I’m not the only one who makes mistakes!
I love the way the SMDs are lining up them themselves. Thanks for showing this. For me SMD projects are always “a bridge to far”. Perhaps it isn’t anymore.
So many mistakes :) I've always shied away from doing SMD - it's always seemed like something that was too difficult. But I think it's actually pretty doable at home, either with the soldering iron (provided you don't go too small on the components!) or with these little hotplates/hot air guns.
you could make pcb with double layer, that convert orientation of the smd pins, so the new pcb adapter will be soldred as smd and on it top you solder your ship, you just will have thicker pcb
That’s a brilliant idea! Make an adapter board. Like it!
@@atomic14 thats the best and cost effective to not throw old pcb, even if you spend too much money and time on building them, and the better way is to get all component before ordering pcb that you will confirm all mounting of component, and made quick change, also you make adapter from lost space on pcb for ex 10x10cm you will not use all the surface so by designing you gonna keep space for adapter even if the price is for one pcb and not how much traces or holes on it
best regard and thanks for your videos :) Peace
Not sure if you'd want to switch to a dual chip solution? A normal 595 with a driver chip, uln2003 for instance
Both should be cheap and easy to source.
A friend of mine who is a guitar Luther with a professor dad figured out that you can stick a vacuum straight onto the edge of a slab of mdf to hold chunks of wood down, the result left me dumbfounded. I wonder if mdf would work with the stencil and board?
Hi Sir, I don't know how to contact you.. wanted to ask, is it possible to make project with BLE audio, which got recently released.. let me know if any help required from my side
In my own higher power 7-seg circuits, I've used the TPIC6C595, which seems to be more widely available. A bit lower power than the "A" variety, but still able to do 250ma/33v which might be enough? EDIT: reviewing my own circuit again, I remember the 596 series can source current, the 595 powers it - but in any case, maybe it's usable with the filaments you have...
Nice - I completely missed that there were variants. The C does seem to be a lot more available.
Sometimes i preffer to Made the símbols of the components, that copy and paste make me feel Bad.
Which microscope did you use?
I like the fact that you reply on each comment 😅
I try - at least when the video first comes out, but it can get a bit overwhelming sometimes.
Easy mistake to make, 2x👍
Yeah, happens to everyone at some point I think.