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by efftek
Sat May 20, 2017 10:23 pm
Forum: General discussion
Topic: blue pill prototyping board with tft adapter
Replies: 11
Views: 250

Re: blue pill prototyping board with tft adapter

zoomx wrote:Maybe a power connector like the one in Arduino UNO.


Instead of the pins or the terminal block or as well as? - the socket is only a few pence so I've ordered some.
by efftek
Sat May 20, 2017 10:12 pm
Forum: General discussion
Topic: blue pill prototyping board with tft adapter
Replies: 11
Views: 250

Re: blue pill prototyping board with tft adapter

efftek wrote:I may just have to lie in the sun for two weeks and drink retsina!


Yeah, like Bev will allow that!
by efftek
Sat May 20, 2017 10:08 pm
Forum: General discussion
Topic: blue pill prototyping board with tft adapter
Replies: 11
Views: 250

Re: blue pill prototyping board with tft adapter

Good point.. I guess a kit would probably need through hole regulators. Which cost more than smd's negating any savings. Btw, this isn't the finished product of the board I sent you, that one has moved on a bit with a rechargeable LiPo battery and improved layout for the navigation keys. I've also ...
by efftek
Sat May 20, 2017 4:15 pm
Forum: General discussion
Topic: blue pill prototyping board with tft adapter
Replies: 11
Views: 250

Re: blue pill prototyping board with tft adapter

@Andy, yes its fully assembled. I'd probably still have to assemble the smd's not everyone can do that. Also, I can guarantee it's working if I assemble and test.

I could sell a cheaper one with sockets and no blue pill I suppose.
by efftek
Sat May 20, 2017 8:28 am
Forum: General discussion
Topic: blue pill prototyping board with tft adapter
Replies: 11
Views: 250

blue pill prototyping board with tft adapter

Guys, I now have a prototyping board on eBay http://m.ebay.co.uk/itm/192192445430?_mwBanner=1 I'm selling it for £19.50, I know its not as cheap as Chinese but I am only doing batches of 10 and only buying small numbers of parts. There's also a video on YouTube. https://m.youtube.com/watch?v=zrMEeFS...
by efftek
Mon May 15, 2017 2:09 pm
Forum: General discussion
Topic: A question of grounding
Replies: 0
Views: 66

A question of grounding

Hi, I'm designing a board based on an STM32F103R series. The board is powered by a 5000mAh LiPo which is boosted to 5V by a MAX982 charge pump this in turn supplies two 3v3 LDO's with a ferrite bead between the grounds so I have separate analog and digital power supplies. I want to measure vibration...
by efftek
Sat May 13, 2017 1:00 pm
Forum: General discussion
Topic: Blue pill usable pins
Replies: 3
Views: 239

Re: Blue pill usable pins

As SteveStrong says, boot0 has its own pin, boot1 however is also PB2, maybe that's what you read. I believe boot1 is only used if boot0 is high at start up but don't quote me. PB3 and PB4 are unable as inputs as I have just learned today but you have to disable debugging with the following line in ...
by efftek
Sat May 13, 2017 7:20 am
Forum: General discussion
Topic: whats with PB3 & PB4?????
Replies: 2
Views: 141

Re: whats with PB3 & PB4?????

@ag123, thank you so much. That sorted my problem.

Steve.
by efftek
Fri May 12, 2017 8:36 pm
Forum: General discussion
Topic: whats with PB3 & PB4?????
Replies: 2
Views: 141

whats with PB3 & PB4?????

I have found that on my blue pill boards, if I connect an LED to either PB3 or PB4, I cant blink it on and off, it just stays off. Also, if I connect a button to either of these two pins, button presses are not detected either. I can't paste the code here as im using my mobile as my internet us down...
by efftek
Tue Apr 25, 2017 9:20 pm
Forum: Projects
Topic: $10 O-Scope revisited
Replies: 660
Views: 42203

Re: $10 O-Scope revisited

Rick Kimball wrote:Why do people here constantly pollute the threads with non related questions? It is getting ridiculous now.


Who are you referring to Rick?

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