STM32F303CC on Cheap Mini Dev Board: Support for SMT32F3

Limited support for STM32F3 based boards, e.f STM Discovery and Nucleo line
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Rick Kimball
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Re: STM32F303CC on Cheap Mini Dev Board: Support for SMT32F3

Postby Rick Kimball » Fri Feb 05, 2016 4:33 am

Hopefully I didn't miss someone already mentioning this board ...
Have you all been following the new Nucleo boards, the Nucleo-32 series? Specific to this conversation would be the NUCLEO-F303K8. They are a small form factor and use the smaller 32pin chips but still have an onboard st-link v2:

Nucleo Development Boards for STs 32Pin STM32 MCUs_popup.jpg
Nucleo Development Boards for STs 32Pin STM32 MCUs_popup.jpg (45.63 KiB) Viewed 900 times


https://octopart.com/search?q=NUCLEO-F303K8 ~ $11 from Digikey

-rick
-rick

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mrmonteith
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Re: STM32F303CC on Cheap Mini Dev Board: Support for SMT32F3

Postby mrmonteith » Fri Feb 05, 2016 2:50 pm

Rick,
That looks purdy. :o I have to quit looking at shiny new boards.

Michael

bianchifan
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Re: STM32F303CC on Cheap Mini Dev Board: Support for SMT32F3

Postby bianchifan » Fri Mar 04, 2016 4:43 pm

MGeo wrote:STM32F103C8: 2,500: $2.94
STM32F303CC: 2,500: $3.87


BULLShit!!
I wouln't need 2500 pcs, never ever..

On Ali F303CC cost me roundabout 11$, at Conrad's 12€!

Your so called high performance flight controllers are action offered for 18$.

racemaniac
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Re: STM32F303CC on Cheap Mini Dev Board: Support for SMT32F3

Postby racemaniac » Fri Mar 04, 2016 7:46 pm

Wahoo :)
I just did a transplant of a F303CBT6 onto a maple mini board, and i just programmed it via an stlink v2, and it's working XD. I've got blink running on it. :D.

Where can i take this little board from here? Is there a bootloader so i could program it via the usb port?
Should i change some settings in the board files? (i'm atm just programming it as if it's an STM32F3Discovery).

For now i'm pretty proud i made it this far already XD. this is the first serious SMD soldering i did (i ruined one board when trying to desolder using my soldering iron, then on the next board gave it a try with my heatgun, and that was a LOT easier (even though it's a way too big heat gun that isn't meant for SMD work XD)).

MGeo
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Re: STM32F303CC on Cheap Mini Dev Board: Support for SMT32F3

Postby MGeo » Sat Mar 05, 2016 10:49 am

bianchifan wrote:I wouln't need 2500 pcs, never ever..


@bianchifan. The number is meant to be representative of what the board would cost if available from suppliers in volume. The numbers are therefore accurate. The point of the original post was to lobby for support of the F3 platform in the hope that demand might build. Of course it is not the cost of what you as an individual purchaser could buy a single piece for. Choose to disagree if you wish, its a free world.

You can find STM32F303CC for less than $6 ea if you look around. At the time of this post, this link has them for US $ 5.48/ea for 5 pcs with free shipping http://www.aliexpress.com/item/Free-Shi ... 139cc6f777, availability is slowly improving. The single chip price at the Mouser link is $7.45.

There is no board level availability at present and the F3 is not presently supported by STM32 so the point is moot. It has proved to be an intersting learning experience and I had the same feeling as racemaniac when my board first fired up. An F3 with its on board FPU is a powerful real time control chip for the $. I've also been exploring the CCM SRAM feature of the F3 (Core Coupled Memory SRAM, a specific F3 feature for time-critical routines, accelerates performance by 40% http://www.st.com/web/en/resource/techn ... 083249.pdf). If you are a real time controls freak and are handy with SMT and GCC, then the F3 is worth a look.

Congrats to racemaniac on your success.

Regards,
George
Last edited by MGeo on Sat Mar 05, 2016 12:01 pm, edited 4 times in total.

bianchifan
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Re: STM32F303CC on Cheap Mini Dev Board: Support for SMT32F3

Postby bianchifan » Sat Mar 05, 2016 11:46 am

MGeo wrote:At the time of this post, this link has them for US $ 5.48/ea for 5 pcs with free shipping

Didn't saw that, I looked only up to 3pcs. ;)
Maybe I give it a try later in spring.

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sheepdoll
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Re: STM32F303CC on Cheap Mini Dev Board: Support for SMT32F3

Postby sheepdoll » Sat Mar 05, 2016 6:34 pm

MGeo wrote:.
.. The point of the original post was to lobby for support of the F3 platform in the hope that demand might build. ...


You are not alone.

This week I received a F3 Nucleo with the Motor controller shield. While I needed to place a Mouser order for some more directly needed items, I could not resist the $35.00USD price on the dev kit. While I was most interested in the motor and the shield board. The Nucleo is a F302R8.

At least I have access to the HALMX code that allows for quickly lashing up a simple project. I downloaded the support files which claim to include a plugin for the CubeMx tool. A lot of the docs and tutorial refer back to the $1100.00USD motor kit. The rest relate to setting up the IAR tool chain.

I made it as far as generating the .ioc file. Then went back to the work on hand. While I could have run through the blink and serial I/O sketches that work on my other Nucleo boards. I am pretty much 100% that this board would work the same.

In skimming through the downloaded docs, I notice that the Shield should work with other Nucleo boards. I think the F103 board was included.

I got out my other Nucleos, such as the F401 that I sometimes work with and the F103 nucleo. They are all the same PCB board. Even the silk screen and the revision number is the same. The sticker differs which is probably how they differentiate the products. I also notice that all these boards use the same 'R" package. Which probably simplifies things. That way Pin X is always function Y.

I am now of the feeling that support, is something that one has no control over. Demand on the other hand is purely determined by the lowest price of he shiniest object. I do not think the two are related.

MGeo
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Re: STM32F303CC on Cheap Mini Dev Board: Support for SMT32F3

Postby MGeo » Sat Mar 05, 2016 10:34 pm

Roger has posted other projects, some look like they may provide F3 support https://github.com/rogerclarkmelbourne/ ... o-projects

I have that F302 motor kit and Nucleo board as well, I'll have to explore when I get a chance.

George

umejopa
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Re: STM32F303CC on Cheap Mini Dev Board: Support for SMT32F3

Postby umejopa » Wed Feb 08, 2017 5:12 pm

Will try this get some sampel of 303cc and use the heatgun to remove the 103 but it hard to hand solder the 303 and get a short that i dont find so have to find some solder paste and try again .
Jonas

umejopa
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Re: STM32F303CC on Cheap Mini Dev Board: Support for SMT32F3

Postby umejopa » Thu Mar 16, 2017 6:59 pm

Now I get my solder flux and geting soldering right.
ST-Link work ...


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