Search found 123 matches

by lkcl
Fri Dec 01, 2017 9:56 pm
Forum: Off topic
Topic: Making your own pcb's.
Replies: 45
Views: 1155

Re: F405 & F411 versions of the BluePill

Re: Pick and place I am sure I saw something about modifying a small aquarium pump and turning the one way valve around to make it into a vacuum pump. But perhaps the vacuum pump in that article is even cheaper investigated this a while back, found openpnp. hint: make damn sure that you include the...
by lkcl
Fri Dec 01, 2017 9:50 pm
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 607
Views: 11313

Re: F405 & F411 versions of the BluePill

Once it is done, we will have to investigate on how to manufacture the boards at the lowest possible cost. I may have a way to do this right from Mainland China, but if someone has some hints, it is welcome! email me at luke.leighton@gmail.com and i can put you in touch with my contact who has a fa...
by lkcl
Sun Nov 19, 2017 7:44 am
Forum: Libraries & Hardware
Topic: Is anyone interested in helping to make an Arduino Due which uses [edited:] a 100-pin STM32L471
Replies: 92
Views: 2731

Re: Is anyone interested in helping to make an Arduino Due which uses [edited:] a 100-pin STM32L471

ok interestingly this time, by taking a HK SIM card with CN roaming capability, and a HK global roaming "Pokefi", i had absolutely no censorship issues whatsoever. however the moment i went outside of the main Shenzhen area (to the Nanshan district) the 4G capability of the Pokefi cut off. ironicall...
by lkcl
Thu Nov 16, 2017 2:11 pm
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 607
Views: 11313

Re: F405 & F411 versions of the BluePill

interesting. so, i just got back from shenzhen maker faire, and a visit to huaquiang road markets. there's one very enterprising - and really very busy - guy in the corner of one of the buildings who, when i said "if i make some PCBs would you be interested to stock and sell them" he said "sure". hi...
by lkcl
Sun Nov 05, 2017 10:16 pm
Forum: Libraries & Hardware
Topic: Is anyone interested in helping to make an Arduino Due which uses [edited:] a 100-pin STM32L471
Replies: 92
Views: 2731

Re: Is anyone interested in helping to make an Arduino Due which uses [edited:] a 100-pin STM32L471

i've got all the parts, and the PCBs here, i'm off to HK this morning, been very busy, will get a chance to do assembly later in the week but comms in SZ are f******d, insane censorship, you have to actually break the law and operate as a common criminal in order to communicate through certain resou...
by lkcl
Tue Oct 31, 2017 1:43 am
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 607
Views: 11313

Re: F405 & F411 versions of the BluePill

Regarding the microSD socket, look at 104031-0811 from Molex. Only 11.95 mm wide, meaning that it fits between the BP rows of pins... And you can find it cheap on TaoBao from many vendors . no. not that one. it's more expensive and not as ubiquitous in the futian district. molex is also known for b...
by lkcl
Sat Oct 28, 2017 8:38 pm
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 607
Views: 11313

Re: F405 & F411 versions of the BluePill

@Squonk Can you also back up your ideas with some facts (that all the components on a single side is that much cheaper to produce, it's that much cheaper to produce. think about it: the board has to go twice through a pick-and-place machine, twice with the squeegee to wipe solder paste across the s...
by lkcl
Wed Oct 25, 2017 12:18 pm
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 607
Views: 11313

Re: F405 & F411 versions of the BluePill

racemaniac wrote:
Tue Oct 24, 2017 7:41 pm
not sure if you know there already is a wiki: http://wiki.stm32duino.com
roger has locked it so that nobody can create an account. only authorised people who already have login details are permitted to edit pages.
by lkcl
Tue Oct 24, 2017 7:36 pm
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 607
Views: 11313

Re: F405 & F411 versions of the BluePill

can't we discuss it on the wiki, and only allow logins the way it is now? interesting suggestion... from experience i've seen repeated evidence that complex discussions quickly become absolute hell-on-earth for different reasons when using a wiki as a "discussion forum". each type of online collabo...
by lkcl
Tue Oct 24, 2017 7:29 am
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 607
Views: 11313

Re: F405 & F411 versions of the BluePill

Roger perhaps a new section in the Wiki for this board, which hopefully will be a reality soon and need a page in the wiki anyway, could have that "research" section? ok, so just so you know, people, it's potentially quite a lot of extra administrative / sysadmin work for roger: the wiki's not set ...