What price this? /stm32/f407vet6

zmemw16
Fri Sep 02, 2016 12:10 pm
not sure what i was looking for on aliexpress, but this poo^Hpped up for £9.26 (yes i know its now 9p cheaper :(
https://www.aliexpress.com/item/Free-sh … 22721.html

tried to get a picture, 450k+ for a cropped png

some details

STM32F407VET6 development board Cortex-M4 STM32 minimum system learning board ARM core board

Important Product Features:

Onboard: SD card connector
RTC Battery: CR1220
The wireless communication: NRF2401 Interface
Data storage: W25Q16
LCD interfaces support FMSC
Multi-user keys
All CPU-IO leads
2.54mm pin spacing integer multiples

Chip Introduction
STM32F407VET6
Kernel: Cortex-M4 32-bit RISC
Features: single-cycle DSP instructions
Operating frequency: 168Mhz 210DMIPS / 1.25 DMIPS / MHZ
Operating voltage: 1.8-3.6V
Package: LQFP100
Storage resources: 512kB Flash
192 + 4kB SRAM
Resources: 3 X SPI, 3 X USART
2 x UART
2 x I2S, 3 x I2C
1 x FSMC, 1 x SDIO, 2 x CAN
1 x USB 2.0FS / HS controller (with dedicated DMA)
1 x USB HS ULPII (for external USB HS PHY)
1 x 10/100 Ethernet MAC
1 x 8 to 12-bit parallel camera interface
3 x AD (12 bit, 1us, sharing 24), 2 x DA (12-bit)


RogerClark
Fri Sep 02, 2016 9:33 pm
Definitely a good price.

I’m not sure what price Arduino.cc will end up charging for their Otto board, but that board would probably be many times cheaper for a very similar level of functionality


Slammer
Fri Sep 02, 2016 10:46 pm
Interesting! Here is the ZET version : https://www.aliexpress.com/item/Free-sh … 62341.html

RogerClark
Sat Sep 03, 2016 2:07 am
Thats a good price for a ZET

zmemw16
Sat Sep 03, 2016 10:35 am
Slammer wrote:Interesting! Here is the ZET version : https://www.aliexpress.com/item/Free-sh … 62341.html

stevestrong
Sun Sep 18, 2016 2:10 pm
And here the mini version, I ordered one.

RogerClark
Sun Sep 18, 2016 8:49 pm
Prices of the F4 must be dropping.

I think I paid the same price, about a year ago, for the F103 version of this board


zmemw16
Sun Sep 18, 2016 11:56 pm
that search was in their shop.
and so did i :)
stephen

tcmichals
Mon Oct 24, 2016 1:36 pm
stevestrong wrote:And here the mini version, I ordered one.

zmemw16
Mon Oct 24, 2016 1:53 pm
only 407 sch in my pinouts (1.7G) directory is attached 111k’ish
its marked up with
STM32F407VET6(F103VET6/F103VCT6)
STM32F103VE(VC)T6 STM32F407VET6

edogaldo
Mon Oct 24, 2016 2:39 pm
zmemw16 wrote:only 407 sch in my pinouts (1.7G) directory is attached 111k’ish
its marked up with
STM32F407VET6(F103VET6/F103VCT6)
STM32F103VE(VC)T6 STM32F407VET6

zmemw16
Mon Oct 24, 2016 8:20 pm
i forgot both about the wiki and my uploading some details etc :oops:
stephen

Ollie
Fri Nov 11, 2016 5:20 pm
Now the price of F407vet6 development board is under $10. I did order one today (on eleven-eleven day :D ) at
https://www.aliexpress.com/item/STM32F4 … 12486.html

michael_l
Fri Nov 11, 2016 6:14 pm
Ollie wrote:Now the price of F407vet6 development board is under $10. I did order one today (on eleven-eleven day :D ) at
https://www.aliexpress.com/item/STM32F4 … 12486.html

RogerClark
Fri Nov 11, 2016 7:43 pm
limited support for F4 at the moment, but the situation should improve a lot when STM finish their F4 core

zmemw16
Mon Nov 14, 2016 3:43 pm
added these links to the wiki?
http://www.dragonwake.com/download/down … manual.pdf
http://www.dragonwake.com/download/down … T6_sch.pdf

<edit>
found the code file (99.6M) and added it to the wiki entry :D
http://www.dragonwake.com/download/down … 7/code.zip
</edit>
mine is [actually are] this exact board.

site doesn’t have the 407vet from the same maker judging from the layout/silk screen etc
board size is reduced, still has jtag/nrf/sdio/flash/tft hdr etc
tft hdr pins aren’t labeled for either board

stephen


RogerClark
Fri Nov 25, 2016 12:24 am
My F407VET board arrived today, but one thing that is dissapointing is that the USB connector doesn’t seem to be connected in a way that allows upload via USB

https://www.aliexpress.com/item/STM32F4 … 0.0.WiBuo9

I’ve not had time to check where the USB data pins are connected to, but I tried moving what I presume are the Boot0 and Boot1 switches and the board does not enumerate on USB.

There do appear to be tracks running to the data pins, but perhaps they go to the OTG USB not the one that provides DFU


RogerClark
Fri Nov 25, 2016 5:13 am
Vendor sent me the schematic, but its too large to upload to the forum.

The Vendors link to their google drive for the file is

https://docs.google.com/uc?id=0Bw-L6X55 … t=download

It seems to have code in the zip as well as the cicuit, but does not contain any dodgy copies of dev environments etc

Edit.

It still doesnt explain why the F407 USB DFU bootloader is not showing up, apart from the PNP transistor attached to USB D+ and PD6.

I suppose if PD6 was low, the USB would be reset and not enumerate, perhaps I need to pull PD6 high, so that USB D+ is definitely not being pulled high

Update.

I tried the USB DFU again, and it eventually appeared as a USB device, though not for ages.

But there don’t seem to be any official STM drivers for their DFU (well if there are, they don’t make it easy to find them)
So I modified the libwdi installer script for the stm32duino bootloader driver , but just changing the VID and PID values

“%~dp0wdi-simple” –vid 0x0483 –pid 0xDF11 –type 1 –name “STM32 DFU” –dest “%~dp0maple-dfu”

and it seems to work, and dfu-util gets valid data back from the board.

But thats as far as I’ve got!


ahull
Fri Nov 25, 2016 9:13 am
Similar boards on ebay… http://www.ebay.co.uk/itm/STM32F407VET6 … Sw8w1X~Koq

http://www.ebay.com/itm/Mini-core-board … SwnNBXXpV5

http://www.ebay.com/itm/STM32F407VET6-D … Sw8w1X~Koq

Bizarrely ebay also recommended this when I looked for the f407vet6 :shock: :lol:


RogerClark
Fri Nov 25, 2016 9:36 am
Yep

Plenty to choose from.


zmemw16
Fri Nov 25, 2016 12:36 pm
eventually found something, no bets on how readable the pic is
evidently not much

stm32f407vet6-black.jpg
stm32f407vet6-black.jpg (90.52 KiB) Viewed 280 times

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