[sdiy] LCSC.com (branch off 8-bit MCUs, why bother?)

[ulfur hansson]

wow! that price sounds incredible... I just finished a design that i'm
dreading to build because of high component count. the JLCPCB
boards/assembly are OK quality?

i've always used Seeed for bare pcb's with great results, but my experience
with their smt assembly hasn't been at all that great.
I've used gold phoenix with good results, but they are more expensive of
course...

fös., 15. nóv. 2019 kl. 14:29 skrifaði Chris McDowell <
declareupdate at gmail.com>:

> I just wanted to pop in and put in a good word for LCSC. I use LCSC.com and
> JLCPCB.com daily for work, with jlcpcb now having -insanely- great deals
> on low volume smt assembly. I'm talking 20 units covered in surface mount
> components for ~$3 a piece. jlcpcb already got all of my business for
> prototype pcbs before this service went live in the US, but now I get any
> prototype pcb for less than I would have a year ago, with all or most
> surface mount soldered. A bit of a game changer for us.
>
>
> *Chris McDowell*
> ATXLED <http://www.atxled.com>
>
>
>
>
>
> On Nov 15, 2019, at 12:43 PM, sleepy_dog at gmx.de wrote:
>
>
> Ben Stuyts wrote:
>
>
>
> On 14 Nov 2019, at 23:04, sleepy_dog at gmx.de wrote:
>
> Ben Stuyts wrote:
>
> How’s $0.03 for a microcontroller? :)
> https://www.youtube.com/watch?v=VYhAGnsnO7w
> Die shot: https://www.youtube.com/watch?v=5jw5D0F008c
>
> By the way, lcsc.com where this mcu came from is a really interesting
> distributer, part of the same company als jlcpcb.com (pcb manufacturer).
> Lots of cheap Chinese parts, but also e.g. ST microcontrollers for better
> prices than e.g. Farnell or Digikey. I’ve used some of them in production,
> no complaints yet.
>
> Ben
>
> Ha! :D That's slightly cheating, though, isn't it? Unrealiably obtainable
> "seasonal produce" fresh from Shenzen market... usually made for one-off
> rubbish products.
> Or not?
>
>
> I believe lcsc.com is a reputable distributor, and the company behind
> those cheap MCU’s (Paduak Tech) seems to give reasonable support. There are
> some  eevblog.com forum threads where people discuss their experience
> with these chips. I just checked that particular MCU and it is still in
> stock, over 18k pcs:
> https://lcsc.com/product-detail/PADAUK_PADAUK-Tech-PMS150C-U06_C168658.html.
> It boggles the mind…
>
> For a more well known example: For a recent production run I needed 100
> pcs of the STM32F103RBT6, a 64 pin Arm Cortex-M3 controller. It
> is US$1.5348 at lcsc, and USD 4.83 at Digikey. There is some sort of supply
> chain advantage there…
>
> Ben
>
> Ok, this is interesting. In general, not for me personally (wrt
> applicability). Those seem more primitive than I was aware still exist, if
> I read that right you need to chose whether it comes with an arm OR a leg
> ;) Which would be just right for what Richie B. mentioned, e.g. electric
> toothbrush, I get it. Wasn't even aware those had MCUs now... But I guess
> one step to be "ahead" (marketing wise anyway) of the competition at some
> point in their evolution was to give toothbrushes more than one function,
> and as soon as it has that, some simple MCU like that comes in handy. (or
> if the charging logic can also ditch some "traditional" components if a MCU
> is present, then it's benefitial even earlier?)
>
> So, I guess my perception of 8 bit MCUs fading away comes from seeing a
> lot of areas where there once were king, and anything better prohibitively
> expensive, and nowadays those fields that I am more aware of tend not to be
> so focused anymore on "lowest end MCU possible" (again, from industrie
> examples I stumble upon, which is biased by my particular, if not peculiar,
> set of interests, I guess)
>
> So to summarize, my perception is still that they are becoming less used
> in some areas (and IF my perceived trend continues, the end point there is
> "phased out"), but now through this thread I have become aware of areas
> that weren't on my radar at all before, so thanks for that, to all involved.
>
> - Steve
>
>
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