Search found 7494 matches

by RogerClark
Mon Dec 18, 2017 6:57 am
Forum: New users MUST post here first, and let us know a bit about you and your projects
Topic: Starting to play with my STM32F105
Replies: 1
Views: 12

Re: Starting to play with my STM32F105

Hi Dwight I'm not sure if this is the right forum for you. Its a forum for Arduino on the STM32 series of boards It doesn't look like you are programming using the Arduino API or IDE. Its interesting that you are trying to run Forth on these processors, but STM have their own "community" forums, whi...
by RogerClark
Mon Dec 18, 2017 6:53 am
Forum: New users MUST post here first, and let us know a bit about you and your projects
Topic: Hi from St. Louis
Replies: 18
Views: 258

Re: Hi from St. Louis

The Arduino IDE does not have a debugger

The STLink build options enable USB Serial, so if you plug the USB connector on the board to your PC, you should get a Serial device and you can use Serial.println()
by RogerClark
Mon Dec 18, 2017 6:51 am
Forum: Off topic
Topic: Arduino Based Lightsaber With Light and Sound Effects
Replies: 5
Views: 24

Re: Arduino Based Lightsaber With Light and Sound Effects

Yes. Very impressive that he is able to stream a wav
by RogerClark
Mon Dec 18, 2017 4:56 am
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 500
Views: 8403

Re: F405 & F411 versions of the BluePill

Thanks

I merged the PR
by RogerClark
Mon Dec 18, 2017 4:55 am
Forum: General discussion
Topic: generator on a timer with an interval of 25 nanoseconds ?
Replies: 12
Views: 183

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

OK

So what is needed is a 20Mhz square wave.
by RogerClark
Sun Dec 17, 2017 9:20 pm
Forum: Off topic
Topic: Arduino Based Lightsaber With Light and Sound Effects
Replies: 5
Views: 24

Re: Arduino Based Lightsaber With Light and Sound Effects

@racemaniac I suspect the WAV files must be lower resolution that the ones you are using, and perhaps one sound file at a time. from what I have read in your posts, you are doing a lot if complicated files processing of sounds Edit. I cant see a DAC etc in the BOM for that AVR lightsabre, so the aud...
by RogerClark
Sun Dec 17, 2017 9:16 pm
Forum: New users MUST post here first, and let us know a bit about you and your projects
Topic: Hello from UK
Replies: 11
Views: 156

Re: Hello from UK

Airline pricing models are hard to fathom..

Its possible that landing fees etc are cheaper here than the UK, though I doubt that would make a big difference

Airspace would be a lot less congested here, so perhaps that saves fuel.
by RogerClark
Sun Dec 17, 2017 9:11 pm
Forum: General discussion
Topic: generator on a timer with an interval of 25 nanoseconds ?
Replies: 12
Views: 183

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

@acronis

You have written conflicting requirements.

You said 25nS interval. Which is possible using he F4 processor.

You also said 1MHz PWM, which is not possible ( assuming 8 bit PWM resolution)

I think you need to explain what you are trying to do, and why....
by RogerClark
Sun Dec 17, 2017 9:05 pm
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 500
Views: 8403

Re: F405 & F411 versions of the BluePill

i think the option of using something like a F103RE or F103RG etc would be interesting as all the F1 core would work, plus it has DAC and SDIO, and this board would have better ADC noise performance
by RogerClark
Sun Dec 17, 2017 11:29 am
Forum: General discussion
Topic: generator on a timer with an interval of 25 nanoseconds ?
Replies: 12
Views: 183

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. ...