Search found 694 matches

by ag123
Fri Aug 18, 2017 4:40 pm
Forum: Projects
Topic: Stm32duino with Android, how to use USB serial on Android
Replies: 9
Views: 206

Re: Stm32duino with Android, how to use USB serial on Android

for still frame jpeg i think dependent on quality, it may be possible to be quite small (e.g. a dozen of k bytes), even then, my guess is it would be more like 'slow scan' tv https://en.wikipedia.org/wiki/Slow-scan_television actually jpeg compression ratios are rather impressive, based on this expe...
by ag123
Wed Aug 16, 2017 4:50 pm
Forum: General discussion
Topic: Poll - favorite STM32F1 board for stm32duino 08/2107
Replies: 11
Views: 183

Re: Poll - favorite STM32F1 board for stm32duino 08/2107

among the F1 i'm a die hard fan for MM (clone - from Baite) (the prejudice is because i simply have it) :lol: among the F4 i agree with Ollie bluepad (stm32f407 mini) is about the most seductive (i've got a separate 'china made (possibly designed)' f405 the pins aren't properly broken out, while bla...
by ag123
Tue Aug 15, 2017 4:40 pm
Forum: General discussion
Topic: Forum cluttered with posts about non existent problems...
Replies: 24
Views: 382

Re: Forum cluttered with posts about non existent problems...

People have started to comment that it's very hard to find the correct information, because the forum is cluttered with posts where people have claim things don't work for them, but in the end it turns out they made software or hardware mistakes or had defective hardware ***my personal opinion, tak...
by ag123
Tue Aug 15, 2017 3:38 pm
Forum: Projects
Topic: Stm32duino with Android, how to use USB serial on Android
Replies: 9
Views: 206

Re: Stm32duino with Android, how to use USB serial on Android

it is actually hidden somewhere in a thread here and anyway a google search for keywords "usb serial android arduino" turns up this
https://github.com/mik3y/usb-serial-for-android
;)
by ag123
Mon Aug 14, 2017 4:22 pm
Forum: STM32F4 Boards
Topic: f407vet6 & f407zet6
Replies: 95
Views: 5101

Re: f407vet6 & f407zet6

i've always been wondering if stm32f4xx kind of high performance mcus may after all one day run 3d printers more than simply those 'dumb' 3d printer controllers that just interpret gcodes and move the motors. perhaps one day we may be able to pack an octoprint http://octoprint.org/ clone and do away...
by ag123
Mon Aug 14, 2017 4:06 pm
Forum: STM32F4 Boards
Topic: f407vet6 & f407zet6
Replies: 95
Views: 5101

Re: f407vet6 & f407zet6

oh and that stm's f40x ART accelerator and DMA controller may dwarf all those 'bigger' chips running at 1 ghz, in particular for running apps directly from flash. but of course the pi win by simply running it off megabytes of dram
:lol:
by ag123
Mon Aug 14, 2017 3:52 pm
Forum: STM32F4 Boards
Topic: f407vet6 & f407zet6
Replies: 95
Views: 5101

Re: f407vet6 & f407zet6

the zet is remaining rather high at about $15 zgt not seen srp At that price, you might be tempted to go for a Pi Zero W instead of the ZET yup & if you don't mind a 'clone' there's orange pi for even less https://www.ebay.com/sch/i.html?_sop=15&_nkw=orange+pi&_pgn=10&_skc=450&rt=nc http://www.oran...
by ag123
Mon Aug 14, 2017 8:27 am
Forum: Projects
Topic: Motion and speed detector
Replies: 30
Views: 799

Re: Motion and speed detector

ahull wrote:
Thu Aug 10, 2017 11:09 am
I've not had much spare time recently, so I haven't pursued this topic, but some of you might find this interesting.

http://hackaday.com/2017/08/10/making-a ... t-awesome/
wow, this means even formula1 cars on the racetrack won't escape the speedtrap
:lol:
by ag123
Sun Aug 13, 2017 11:52 am
Forum: STM32F4 Boards
Topic: f407vet6 & f407zet6
Replies: 95
Views: 5101

Re: f407vet6 & f407zet6

by ag123
Fri Aug 11, 2017 12:08 pm
Forum: Projects
Topic: hall effect tachometer
Replies: 14
Views: 309

Re: hall effect tachometer

i'm halfway wondering if a simple magnet on the wheel & a coil wound around ferrite (solenoid inductor) would basically do the same trick, i think many bicycle tachos does exactly that :lol: