Search found 326 matches

by Squonk42
Sat Feb 24, 2018 10:28 pm
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 776
Views: 16441

Re: F405 & F411 versions of the BluePill

Thank you Victor for all your thorough testing, I cannot dream of a better tester than you! If the crystals are working over the full temperature range and we do not need a dampin resistor, we are all good! Another key feature that is worth testing is the USB host with he the load switch. I would al...
by Squonk42
Sat Feb 24, 2018 7:57 am
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 776
Views: 16441

Re: F405 & F411 versions of the BluePill

:D
Great news!

Thank you Victor for testing this!
by Squonk42
Fri Feb 23, 2018 3:53 pm
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 776
Views: 16441

Re: F405 & F411 versions of the BluePill

It's a little inconvenient that 2 of the RGB pins are the SWDIO and SWDCLK so using the RGB meant that I had to disable SWD and then had to use the BOOT0 button when I wanted to reflash. Nice, thank you for sharing your experience! About the RGB LED, I found no real other option to keep the compati...
by Squonk42
Tue Feb 20, 2018 10:10 pm
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 776
Views: 16441

Re: F405 & F411 versions of the BluePill

This AN from Analog Devices can be useful. :geek:
by Squonk42
Tue Feb 20, 2018 4:23 pm
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 776
Views: 16441

Re: F405 & F411 versions of the BluePill

No, there is a 3V3A, but no AGND, it is almost impossible to route to a pin following the state of the art rules. Which means that the ferrite bead between GND and AGND is useless IMHO. And if the passive PI filter between +3V3 and +3V3A is working as expected (to be tested), we should get the same ...
by Squonk42
Tue Feb 20, 2018 9:06 am
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 776
Views: 16441

Re: F405 & F411 versions of the BluePill

I updated the list. Thinking about the user button, I have a concern on R5 being 0R. If it's populated and an unaware user connects PB8 to GND for whatever reason in his circuit, or drives PB8 down for some use, and then press the button, it can cause a short. Imagine a case where he chooses to use...
by Squonk42
Mon Feb 19, 2018 4:00 pm
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 776
Views: 16441

Re: F405 & F411 versions of the BluePill

victor_pv wrote:
Mon Feb 19, 2018 1:59 pm
Assembly options:
  • R405 MCU
  • R4x1 - 4x0 MCU
  • F103 MCU
  • F722 MCU
  • ... Other MCU options.
  • Option with FB/2112 for VDDA
  • Option for charger/no charger
  • RGB LED or normal LED
by Squonk42
Mon Feb 19, 2018 1:21 pm
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 776
Views: 16441

Re: F405 & F411 versions of the BluePill

Is there any list of mcus which fit onto the board (without any mods)? From my previous post 45 pages ago: STM32L052R6 STM32L052R8 STM32L053R6 STM32L053R8 STM32L063R8 STM32L072RB STM32L072RZ STM32L073RB STM32L073RZ STM32L083RZ STM32L100R8 STM32L100R8-A STM32L100RB STM32L100RB-A STM32L100RC STM32L15...
by Squonk42
Sun Feb 18, 2018 10:15 am
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 776
Views: 16441

Re: F405 & F411 versions of the BluePill

Haha, I was joking!

Do you have a known-working STM32F4xx board (STM32F4DISCOVERY)?
by Squonk42
Sun Feb 18, 2018 8:22 am
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 776
Views: 16441

Re: F405 & F411 versions of the BluePill

Ideas: reverse the LeD :) , try on another working STP32 board...