Search found 191 matches

by Squonk42
Sun Dec 17, 2017 10:59 pm
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 500
Views: 8429

Re: F405 & F411 versions of the BluePill

I just submitted a pull request to Roger for the new version and updated the TODO list . The 3D model for the micro USB connector is still the old Molex one, but the footprint is the one for the BSC Model 010 above (the one I bought from Aliexpress). If there are 3D modeler experts, I can provide th...
by Squonk42
Sat Dec 16, 2017 8:54 pm
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 500
Views: 8429

Re: F405 & F411 versions of the BluePill

I have found (one of?) the original manufacturer(s) of the famous "harpoon-style" micro USB connector: Dongguan BSC(Bestcreate) Electronics Co.,Ltd . Here is a list of their micro USB connectors: https://bsc-elec.en.alibaba.com/productgrouplist-804863016/Micro_USB_2_0_Connector.html The one that is ...
by Squonk42
Thu Dec 14, 2017 2:48 pm
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 500
Views: 8429

Re: F405 & F411 versions of the BluePill

Oval TH are much easier in Kicad than in EagleCAD :D
by Squonk42
Thu Dec 14, 2017 2:41 pm
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 500
Views: 8429

Re: F405 & F411 versions of the BluePill

I think it is possible to design a single footprint that will work with all of them: the 5 USB pins have a standard pitch (but their footprint length may be 1.10 or 1.15 mm), there may be a "lip" at the front or it can be flat like for the Chinese ones, the biggest differences are regarding the legs...
by Squonk42
Thu Dec 14, 2017 6:12 am
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 500
Views: 8429

Re: F405 & F411 versions of the BluePill

Actually, this one is quite common for heavy duty like usb charger because of its "harpoon" TH legs, and there are plenty that look similar (I know, these are only pictures) on Aliexpress. I eventually found a drawing that is a bitmap capture of the datasheet (I am still interested in it): image.jpeg
by Squonk42
Wed Dec 13, 2017 8:56 pm
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 500
Views: 8429

Re: F405 & F411 versions of the BluePill

There still might be some changes, I just received the micro USB connectors from AliExpress today, and they don't match exactly the Molex 47642-0001 footprint: the rear "hook" pins are closer to the PCB edge by 1 mm :x However, it perfectly matches the one on the original Bluepill! I asked the vendo...
by Squonk42
Wed Dec 13, 2017 2:28 pm
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 500
Views: 8429

Re: F405 & F411 versions of the BluePill

Yes, I did all changes in EagleCAD that I know better, every non-optional items in the TODO list are covered, and actually, the layout is even better. I am redoing it in Kicad, but I am much slower as I don't know the software well enough, but I am still learning :) Right now I have the symbols, foo...
by Squonk42
Mon Dec 11, 2017 10:35 am
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 500
Views: 8429

Re: F405 & F411 versions of the BluePill

I've tested DFU upload on one F4 board, and it seemed to work every time. I checked the board and it does not have a pulldown on PA9 or PA10 I also checked the STM32 Stamp schematic (there is a copy in my repo in the STM32F4Stamp folder) and that board does not have a pulldown on PA9 or PA10 (it ca...
by Squonk42
Mon Dec 11, 2017 6:08 am
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 500
Views: 8429

Re: F405 & F411 versions of the BluePill

Ok, thank you for your feedback! I will then implement solution #2 (not care about it) since 1) I think this situation is unlikely and can be fixed by a simple retry and 2) it is easier, since there is nothing to do! Uploading a board from a bin file on the sdcard would be great! I fixed all problem...
by Squonk42
Sun Dec 10, 2017 10:24 am
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 500
Views: 8429

Re: F405 & F411 versions of the BluePill

Looking at the AN2606, p. 97, section 25.1.2 , the STM32F40xxx/41xxx devices bootloader checks USARTx (USART1 and USART3, both on port B & C) and CANx (CAN2) for a specific character of frame before checking the USB cable to execute the DFU bootloader. This means that for reliable operation, the boo...