Beware: fake discovery - Stm32f4 Discovery Stm32f407

[arro239]

Posted on February 19, 2017 at 01:32

Sorry if that's known but I've only learned today that on eBay you can get a board which tries to look like stm32f4discovery while it's only a copy

on eBay they list it as 'Stm32f4 Discovery Stm32f407' (spelled with a space)

note how audio connector is green

note lack of ST logo

note how all LEDs are blue

and serial-over-USB does not work on this example

and it costs above $19.90 the real one costs in the USA!

https://www.youtube.com/watch?v=9BeFkyunWbc

 

[Tesla DeLorean]

Posted on February 19, 2017 at 03:18

The original STM32F4-DISCO didn't support the USB/VCP connection, even the newer STM32F4-DISC1 board you'd have to solder wires to the ST-LINK's STM32F103 part.

Both buttons look to be black also, and the ground jumpers at the top don't appear to be populated.

Lot of fake stuff on eBay. A clear photo might work better than the video here.

[arro239]

Posted on February 19, 2017 at 03:42

serial-over-USB - I mean on the micorUSB of the stm32f407 chip with my custom firmware. will ask that guy for a picture - the board is in Norway I am not

[Nemui Trinomius]

Posted on February 19, 2017 at 08:42

This board may be Chinese FAKE.

There is a lot of copy/fake/clone boads(even mcu) on ebay and aliexpress.

[arro239]

Posted on February 19, 2017 at 14:22

Note LD0 / LD1 modification

http://i.imgur.com/vyVNkje.jpg

scary soldering

http://i.imgur.com/6oNtodr.jpg