Difference between revisions of "Stm32Dev - rev. b"
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| − | [[Category:STM32]][[Category:STM32 Development Board]][[Category:STM32F405]] | + | [[Category:STM32]][[Category:STM32 Development Board]][[Category:STM32F405]]{{metadesc|Own design STM32 development board}} |
[[File:Stm32Dev rev. b - top side unpopulated.jpg|thumb|STM32Dev rev. b]] | [[File:Stm32Dev rev. b - top side unpopulated.jpg|thumb|STM32Dev rev. b]] | ||
When designing the [[Stm32Dev - first version]] a number of mistakes was made. This lead naturally to the development of [[Stm32Dev - rev. b]]. | When designing the [[Stm32Dev - first version]] a number of mistakes was made. This lead naturally to the development of [[Stm32Dev - rev. b]]. | ||
Revision as of 13:52, 25 November 2020
When designing the Stm32Dev - first version a number of mistakes was made. This lead naturally to the development of Stm32Dev - rev. b.
While the overall design is identical to the first version, a number of tweaks were made. These include:
- Double headers
- Different choice of LDO
- Buttons for NRST and Boot0
- 8 MHz Crystal
- Regular blue LED on PC13
- WS2812B hanging off of PC6
The reasoning behind these choices should be pretty darn obvious, but let me go through them anyway.
I absolutely positively despise breadboards. True, I might have had bad experiences because my breadboards were cheap crap, but I find myself spending more time chasing down lose connections than I do doing anything productive, so I generally much prefer just to wire stuff up using jumper leads directly on the headers. By using that approach I regularly end up in a situation where I need two leads connected to one pin, hence having a dual row is convenient.
The LDO on the original board was massively over dimensioned (can handle up to 1-2 amps). Switched that to a Torex Semicon XC6206P332MR which will happily handle the 500 mA possible from a USB port.
Having the buttons is just a massive convenience on a development board.
Schematics
The full schematics is as:
