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Comments (9)

keirf avatar keirf commented on September 28, 2024

I figure I ought to be able to measure HSE against the HSI or LSI oscillators and then set things up correctly for 4 vs 8 mhz crystal...

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turnkit avatar turnkit commented on September 28, 2024

Is there a proper forum for non bug issues?

Will the black pill work just fine too?

https://www.cnx-software.com/2019/12/24/stm32-black-pill-board-features-stm32f4-cortex-m4-mcu-optional-spi-flash/

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keirf avatar keirf commented on September 28, 2024

There is a Facebook group. The black pill should work but note the pin arrangement is different. The few black pills I purchased had fake stm32 which didn't work.

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cbrunschen avatar cbrunschen commented on September 28, 2024

I think @turnkit meant the different, new "black pill", perhaps more properly the ""WeAct v1.3", that is based on an STM32F4x1 chip, see the link they posted, with a USB-C connector for visual differentiation if nothing else.

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keirf avatar keirf commented on September 28, 2024

It would need porting but could then work. I didn't spot any of these new ones on ebay yet.

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cbrunschen avatar cbrunschen commented on September 28, 2024

It seems they're mainly available on Aliexpress (for example 1, 2, 3, 4) at the moment.

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ptor avatar ptor commented on September 28, 2024

If someone who has ordered a verified working one (a blue, or the new black pill) from a "cheap" source (ebay or Aliexpress) could link to where they bought it from, I would be eternally grateful. I've been on the fence for a long time since I simply don't dare buy one - it looks like it's hit or miss.

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nretro avatar nretro commented on September 28, 2024

Just get a Greaseweazle F730 DYI Kit from Keir. He posts them for a couple of pounds. Just send him an email. Not the cheapest way, but you definitely get a working one while supporting the project.

I've also made some progress on the 4MHz problem. Due to PLL limitations, you only can get the max speed of 72MHz on the STM32, when using 6, 8 or 12 MHz crystals. But it's easy to source these crystals cheaply and replacing them should not be a problem.

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keirf avatar keirf commented on September 28, 2024

Not much more to say here then. I haven't had any more reports of 4MHz crystals. If there are then I will consider updating the docs, or make Blinky aware of it.

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