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

sleepy_dog at gmx.de sleepy_dog at gmx.de
Sat Nov 16 12:31:14 CET 2019

Hrmmmm! You have my attention.
I have used JLCPCB in the past, but was not aware of affordable
component mounting service.

Chris McDowell wrote:
> I just wanted to pop in and put in a good word for LCSC. I use
> LCSC.com <http://LCSC.com> and JLCPCB.com <http://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
>> <mailto:sleepy_dog at gmx.de> wrote:
>> Ben Stuyts wrote:
>>>> On 14 Nov 2019, at 23:04,sleepy_dog at gmx.de
>>>> <mailto: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 <http://lcsc.com/> where this mcu came from is
>>>>> a really interesting distributer, part of the same company
>>>>> alsjlcpcb.com <http://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 believelcsc.com <http://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
>>> <http://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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