Search found 801 matches

by ag123
Fri Dec 15, 2017 4:41 pm
Forum: Off topic
Topic: Linux Journal
Replies: 36
Views: 516

Re: Linux Journal

for those who are not existing subscribers but who are keen about linux, it may be well worth purchasing the archive, it is every issues since the beginning i've actually been following linux journal partly as the topics covered aren't necessarily linux specific, rather they are linux related and th...
by ag123
Fri Dec 15, 2017 2:58 pm
Forum: Off topic
Topic: Linux Journal
Replies: 36
Views: 516

Re: Linux Journal

hi all,

i found this link in the discussion comments thread, a link to purchase the archives (most likely a download)
http://disq.us/url?url=http%3A%2F%2Flj. ... id=2869225

not too sure if it's still available
by ag123
Fri Dec 15, 2017 1:10 pm
Forum: Off topic
Topic: DS212 Open Source Oscilloscope.
Replies: 10
Views: 96

Re: DS212 Open Source Oscilloscope.

actually 1 of those things i'm thinking of is that rather than say using an ili9341 lcd, the samples could be transmitted to the host over usb however, with only 20k ram i'd guess there'd be limits on what can be stored and transmitted the other issue would be keeping sync between different BP or MM...
by ag123
Tue Dec 12, 2017 1:40 pm
Forum: General discussion
Topic: GOing mad trying to sort out sleep mode on STM32F103 Bluepill board
Replies: 12
Views: 215

Re: GOing mad trying to sort out sleep mode on STM32F103 Bluepill board

i'm not too sure if it is possible to mask certain interrupts, arm interrupts , faults & isr is rather elaborate / complicated incidentally found an app note about the low power modes as well http://www.st.com/content/ccc/resource/technical/document/application_note/ff/0a/dc/d2/5e/f5/4b/5a/CD0017169...
by ag123
Tue Dec 12, 2017 1:26 pm
Forum: General discussion
Topic: usb host contr stm32
Replies: 10
Views: 135

Re: usb host contr stm32

and some card sellers actually bundle a reader especially for the higher capacity cards that cost a little more
by ag123
Tue Dec 12, 2017 4:03 am
Forum: General discussion
Topic: usb host contr stm32
Replies: 10
Views: 135

Re: usb host contr stm32

You can use a sd card with stm32, u'd just needs to search the forum for those threads
by ag123
Sun Dec 10, 2017 3:31 pm
Forum: General discussion
Topic: short on VBAT? another board another ailment 130mA currents
Replies: 12
Views: 519

Re: short on VBAT? another board another ailment 130mA currents

i'm actually thiinking in terms of doing a gimmick capacitor like this post from pito http://www.stm32duino.com/viewtopic.php?t=671&start=10#p27426 Basically it does not matter what kind of 32kHz resonator you use - it matters how you tune the frequency exactly. The difference 12.5pF vs. 6pF mostly ...
by ag123
Sat Dec 09, 2017 5:46 pm
Forum: Off topic
Topic: STM32 powered multimeter
Replies: 14
Views: 848

Re: STM32 powered multimeter

actually stm32f103 with 12 bits adc, my guess is that it is literally pretty accurate as 2^12 = 4096
i'm not too sure how that'd translate to counts though and i'm wondering if we use both adc on stm32f103 would there be possibility of getting higher precision?
by ag123
Sat Dec 09, 2017 5:26 pm
Forum: General discussion
Topic: short on VBAT? another board another ailment 130mA currents
Replies: 12
Views: 519

Re: short on VBAT? another board another ailment 130mA currents

well i simply soldered the 32k crystal at the pc14, pc15 pins that's intended for the crystal, but this time round i succeeded in using less solder. somehow by sheer chance it fills the hole nicely and keep the crystal contacts in place on the board there is no load capacitor, it is simply the cryst...
by ag123
Sat Dec 09, 2017 7:01 am
Forum: General discussion
Topic: Programmer's Manual?
Replies: 9
Views: 273

Re: Programmer's Manual?

for 'getting started' the original leaflabs docs is an invaluable resource http://docs.leaflabs.com/docs.leaflabs.com/index.html the rest is probably in the codes and when all else fail rm0008 is the stm32f10x bible (for the h/w io parts) http://www.st.com/resource/en/reference_manual/cd00171190.pdf...