Search found 835 matches

by ag123
Mon Jan 22, 2018 5:45 pm
Forum: General discussion
Topic: stm32 based programmable power supply
Replies: 5
Views: 109

Re: stm32 based programmable power supply

thanks dannyf, i've always think that using an mcu to run a regulator or being itself the regulator (esp, buck/boost) converter is an overkill interestingly st actually publish some appnotes showing how this can be done AN2390 a flexible universal battery charger (st7) http://www.st.com/content/ccc/...
by ag123
Mon Jan 22, 2018 1:11 pm
Forum: General discussion
Topic: Another comparison video on YouTube
Replies: 5
Views: 89

Re: Another comparison video on YouTube

and there is a 'hidden' power about stm32duino, it can do real usb that some simplier arduino can't
and the 'upgrade' stm32f407 can do math at 500mflops overclocked
:lol:
by ag123
Mon Jan 22, 2018 5:14 am
Forum: General discussion
Topic: What can & can't it do?
Replies: 9
Views: 136

Re: What can & can't it do?

i think arduino basically stems from the simplicity of a concept started with wiring http://wiring.org.co/learning/basics/setuploop.html setup() and loop() hence it is possibly easier for beginners to get started stm32 cube would provide (much) better support across the stm32 families of mcus and if...
by ag123
Mon Jan 22, 2018 1:14 am
Forum: General discussion
Topic: stm32 based programmable power supply
Replies: 5
Views: 109

Re: stm32 based programmable power supply

thanks dannyl, my guess is that for a rather low power setup it would be quite possible to use an mcu (stm32), perhaps combined with a dac for the mcu to control an LM317 adjustable linear regulator http://www.ti.com/lit/ds/symlink/lm317.pdf or better still LM2596 bucks converter http://www.ti.com/l...
by ag123
Sun Jan 21, 2018 5:39 pm
Forum: Libraries & Hardware
Topic: SdFat works with 256MB, but not with 4GB SDHC
Replies: 9
Views: 96

Re: SdFat works with 256MB, but not with 4GB SDHC

i'm pretty much a novice in sd cards technology as well, i think the clue to that may well be in the SD simplified specs https://www.sdcard.org/downloads/pls/ in particular Part 1 Simplified Physical Layer Simplified Specification section 4.7.4 list the various detailed command description starting ...
by ag123
Sun Jan 21, 2018 3:33 pm
Forum: Libraries & Hardware
Topic: SdFat works with 256MB, but not with 4GB SDHC
Replies: 9
Views: 96

Re: SdFat works with 256MB, but not with 4GB SDHC

you are using greiman's sd fat? https://github.com/greiman/SdFat , there are some examples such as reading sd info https://github.com/greiman/SdFat/tree/master/examples/SdInfo it may be worth trying them out as if sdinfo don't work the problem may be connectivity itself (e.g. SPI speeds etc) if conn...
by ag123
Fri Jan 19, 2018 3:30 pm
Forum: Projects
Topic: stm32f103c8 or esp32 for a datalogger
Replies: 20
Views: 412

Re: stm32f103c8 or esp32 for a datalogger

he gave the same incentive to me too :lol: when i will receive the esp32 i will decide which mcu to use and then make the pcb, the only problem is that i will see it in 2 months ahahah in italy the national post is soooo slow i was just looking for the esp32's spi pins andddd them are configurable ...
by ag123
Thu Jan 18, 2018 4:34 pm
Forum: Projects
Topic: stm32f103c8 or esp32 for a datalogger
Replies: 20
Views: 412

Re: stm32f103c8 or esp32 for a datalogger

i think u're giving me some incentive to try out esp32 too :lol:
https://www.aliexpress.com/wholesale?ca ... Text=esp32
earlier on some of my searches seemed to land me on somewhat pricier esp32 boards