Search found 7485 matches

by RogerClark
Sun Dec 17, 2017 11:29 am
Forum: General discussion
Topic: generator on a timer with an interval of 25 nanoseconds ?
Replies: 7
Views: 134

Re: generator on a timer with an interval of 25 nanoseconds ?

Depends on what resolution PWM you need E.g. on the F103, with 8 bit resolution, max PWM rate will be 72/256 = approx 280 Khz is max PWM rate On the F4 with 160 Mhz clock rate and 8 bit resolution PWM that only gives you a PWM freq 625 kHz None of these boards will give you a PWM of period of 1Mhz. ...
by RogerClark
Sun Dec 17, 2017 11:22 am
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 496
Views: 8331

Re: F405 & F411 versions of the BluePill

AFIK. The Pig-O-Scope code won't run on the F4 because the DMA system is different
by RogerClark
Sun Dec 17, 2017 11:20 am
Forum: New users MUST post here first, and let us know a bit about you and your projects
Topic: Hello from UK
Replies: 10
Views: 141

Re: Hello from UK

Andy,

You're possible closer to me than you are to the UK, but it depends where in India you are
by RogerClark
Sat Dec 16, 2017 8:28 pm
Forum: IDE's
Topic: STM acquires Atollic
Replies: 13
Views: 207

Re: STM acquires Atollic

actually 8051 (clones) is still loitering around as (rather) cheap *bluetooth LE* dongles :lol: http://www.ti.com/product/CC2541 https://www.ebay.com/sch/i.html?_nkw=cc2541&_sacat=0 and incidentally as well a new fad for sdcc seem to be the stm8s-duino, it seem pretty hot here :) http://www.stm32du...
by RogerClark
Fri Dec 15, 2017 7:07 pm
Forum: General discussion
Topic: generator on a timer with an interval of 25 nanoseconds ?
Replies: 7
Views: 134

Re: generator on a timer with an interval of 25 nanoseconds ?

25 Nano seconds is not 25MHz, it’s 40Mhz

You would probably need to set the clock PLL so the board ran at 160MHz so the timer can have a divider of 4.
by RogerClark
Fri Dec 15, 2017 6:56 pm
Forum: New users MUST post here first, and let us know a bit about you and your projects
Topic: Hello from UK
Replies: 10
Views: 141

Re: Hello from UK

I agree.. Use a Max232, it’s much safer. Re: Australia I think light pollution is bad in all the major cities, and it would take several hours to drive away from the light. Unfortunately the jobs are in the same places as the light pollution, unless perhaps you can get a job at an observatory locati...
by RogerClark
Fri Dec 15, 2017 6:46 pm
Forum: General discussion
Topic: usb host contr stm32
Replies: 14
Views: 206

Re: usb host contr stm32

Steve Several people investigated a composite device, ( specifically one that did not need drivers on Windows ) but they could not make it work on Windows 7. BlackMagic Probe seems to enumerate as 2 Serial ports and also DFU , at the same time, ( but needs drivers on Windows) But, On BMP, the DFU de...
by RogerClark
Fri Dec 15, 2017 10:40 am
Forum: New users MUST post here first, and let us know a bit about you and your projects
Topic: Hello from UK
Replies: 10
Views: 141

Re: Hello from UK

Hi Marco Yes. I think its better here than in London, as it is possible to drive away from the light a bit, and there are some places in Australia which have very little light pollution. One holiday we stayed a night at a cattle station in outback Queensland (Somewhere near here https://www.google.c...
by RogerClark
Fri Dec 15, 2017 10:07 am
Forum: New users MUST post here first, and let us know a bit about you and your projects
Topic: Hello from UK
Replies: 10
Views: 141

Re: Hello from UK

Welcome Marco I have an old Celestron Nextstar telescope (I think its a 4 inch reflector, about 10 years old), but the light pollution in metropolitan Melbourne is terrible, so I've not used it for years. I recall connecting it to the PC control program, several years ago, but I'm not sure what I've...
by RogerClark
Fri Dec 15, 2017 10:01 am
Forum: General discussion
Topic: Avast releases there RatDec decompiler to Open Source
Replies: 2
Views: 69

Re: Avast releases there RatDec decompiler to Open Source

I think it can be used as a plugin for IDA, but I'm not sure if that makes IDA free to use, as its not using HexRays (possibly not)