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Change of MCU

Posted: Sun Jul 26, 2015 5:03 pm
by seba.wetzel
Hello everybody. I want to know why the new version of openMV has a downgrade of MCU, changing a STM32F429 to a 407, like in the first version of the board.
Thanks.

Re: Change of MCU

Posted: Sun Jul 26, 2015 5:14 pm
by iabdalkader
No we're using the STM32F427.

Re: Change of MCU

Posted: Sun Jul 26, 2015 5:35 pm
by seba.wetzel
Ok, I say that because this pdf say it:
https://github.com/openmv/openmv/blob/m ... penmv3.pdf
I want to make my own testing board, what is the exactly MCU that are using?

Re: Change of MCU

Posted: Sun Jul 26, 2015 5:46 pm
by iabdalkader
seba.wetzel wrote:Ok, I say that because this pdf say it:
https://github.com/openmv/openmv/blob/m ... penmv3.pdf
I want to make my own testing board, what is the exactly MCU that are using?
Sorry about that, the 407 and 427 are pin compatible so the same footprint was used. We are indeed using the STM32F427.

Re: Change of MCU

Posted: Sun Jul 26, 2015 5:57 pm
by seba.wetzel
Sorry for all this, too many questions, but can i know why use a 427 instead of a 429? Price?
I'm Interested fully about this projects since I read it on hackaday page

Re: Change of MCU

Posted: Sun Jul 26, 2015 6:08 pm
by iabdalkader
The only difference between the 427 and the 429 is the LCD controller, which we don't need. At some point I made a camera with an STM32F429 and SDRAM, which was never produced I just kept it for reference.

The eagle files naming is confusing, I'll rename them later to OpenMV1 (407 we made a few prototypes) OpenMV2 (This is the KS cam, using 427) and OpenMV-SDR (429+SDRAM)

Re: Change of MCU

Posted: Sun Jul 26, 2015 6:12 pm
by seba.wetzel
Thank you for your patience! It's good to have talked with you.

Re: Change of MCU

Posted: Mon Jul 27, 2015 5:51 pm
by iabdalkader
You're welcome :)

Re: Change of MCU

Posted: Wed Oct 17, 2018 12:08 pm
by victagayun
iabdalkader wrote:
Mon Jul 27, 2015 5:51 pm
OpenMV-SDR (429+SDRAM)
Where in github is it?

Re: Change of MCU

Posted: Wed Oct 17, 2018 5:46 pm
by iabdalkader
victagayun wrote:
Wed Oct 17, 2018 12:08 pm
iabdalkader wrote:
Mon Jul 27, 2015 5:51 pm
OpenMV-SDR (429+SDRAM)
Where in github is it?
Hi, we moved the design files here:

https://github.com/openmv/openmv-boards

Re: Change of MCU

Posted: Fri Oct 19, 2018 2:05 pm
by victagayun
iabdalkader wrote:
Wed Oct 17, 2018 5:46 pm
victagayun wrote:
Wed Oct 17, 2018 12:08 pm
iabdalkader wrote:
Mon Jul 27, 2015 5:51 pm
OpenMV-SDR (429+SDRAM)
Where in github is it?
Hi, we moved the design files here:

https://github.com/openmv/openmv-boards
Hello, do you have the hex file or the compiled file for this?

Re: Change of MCU

Posted: Fri Oct 19, 2018 2:31 pm
by iabdalkader
victagayun wrote: Hello, do you have the hex file or the compiled file for this?
Do you mean the firmware ? No we never actually released any camera with SDR so we don't support it, the design files are there for reference.

Re: Change of MCU

Posted: Fri Oct 19, 2018 2:44 pm
by victagayun
iabdalkader wrote:
Fri Oct 19, 2018 2:31 pm
Do you the firmware ? No we never actually released any camera with SDR so we don't support it, the design files are there for reference.
Ohh. I thought you did initial testing for V2 on this board....
Thanks!

Re: Change of MCU

Posted: Sat Feb 09, 2019 12:10 am
by victagayun
iabdalkader wrote:
Sun Jul 26, 2015 6:08 pm
The only difference between the 427 and the 429 is the LCD controller, which we don't need. At some point I made a camera with an STM32F429 and SDRAM, which was never produced I just kept it for reference.

The eagle files naming is confusing, I'll rename them later to OpenMV1 (407 we made a few prototypes) OpenMV2 (This is the KS cam, using 427) and OpenMV-SDR (429+SDRAM)
Hello, I have ordered 3pcs H7, but may take a while to arrive and nothing to play with. In the meantime, do you share codes and/or hex files of OpenMV-SDR (429+SDRAM) that I can burn and program into the board right away and test?

Re: Change of MCU

Posted: Sat Feb 09, 2019 3:07 pm
by kwagyeman
The OpenMV Cam SDR was abandoned due to system cost.

Re: Change of MCU

Posted: Sat Feb 09, 2019 8:31 pm
by iabdalkader
Yes the firmware for that is long gone and none of the current features existed back then, plus your pin-out will probably be different. You can still find the old SDRAM driver in the source code if it helps.