Generic JC_67 STM32F103RxT6 core boards from Taobao

This is my first post here, I am glad I found this very useful forum

Here are some STM32F103RxT6 core boards from Taobao:

STM32F103RBT6: http://world.taobao.com/item/42902525413.htm
STM32F103RCT6: http://world.taobao.com/item/42853279905.htm
STM32F103RET6: http://world.taobao.com/item/42902685953.htm

Attached the schematic and PCB.
The stm32duino bootloader works, I tested on a STM32F103RET6 board (uploaded and run a sketch for MPU6500 sensor from Invensense).

Regards,
Cazimir

Taobao is awash with STM32 boards.

Its just a shame its hard to order from Taobao, i.e my personal experience of ordering though a taobao agent (company) was not that good, and handling and shipping ended up costing far more than the boards I bought

It’s my 8th order from TaoBao through Panlishop. Their fee is 10% of the (product cost + internal shipping).
They didn’t cheat (too much ) about the package weight, so far. I received some money back, once, because the final package weight was less than the estimated value .
To give an idea, shipping to Romania for 100g package via China Post Registered Mail is about $4..

I used Yoybuy, but it ended up costing a lot extra because the supplier sent the boards in a cardboard box which weighed much more than the boards themselves

I think I ended up paying $10 just for the weight of the cardboard

I think I will stick to buying from AliExpress and eBay unless absolutely necessary, as there are not any surprises with additional costs.

RogerClark wrote:I used Yoybuy, but it ended up costing a lot extra because the supplier sent the boards in a cardboard box which weighed much more than the boards themselves

I think I ended up paying $10 just for the weight of the cardboard

I think I will stick to buying from AliExpress and eBay unless absolutely necessary, as there are not any surprises with additional costs.

Hi,

Thanks for sharing the seller..

I’m interested to order a few “red pill” from the same seller u mentioned …

STM32F103C8T6 / 48pins / 64Kb flash
http://world.taobao.com/item/3887942705 … .14.1B5Mi6

Are these the “same” red pill board with 1.5K pull-up at PA12 mentioned at http://www.stm32duino.com/viewtopic.php?f=28&t=117

Thanks

stanleyseow wrote:

Are these the “same” red pill board with 1.5K pull-up at PA12 mentioned at http://www.stm32duino.com/viewtopic.php?f=28&t=117

Thanks

Hi,

My JC66 ( STM32F103C8T6 – 64kb flash ) and JC67 ( STM32F103RBT6 – 128Kb flash ) & ST-Link V2 finally arrived …

2015-12-06 01.36.10 by stanley_seow, on Flickr

I use the Arduino IDE 1.6.3 with ST-Link V2 to flash the blink on PC13 LED to both the board and they are working well..

When I use the ST-Link Utility to flash the bootloader, generic_boot20_pc13.bin ( from https://github.com/rogerclarkmelbourne/ … 0_pc13.bin) to the JC66 board, disconnected the ST-Link and plug-in the micro-USB,
it seems to detect an USB Unknown device

Did I missed some steps on flashing the bootloader part ??

Can I safely upgrade the firmware of the clone ST-LinkV2 using the ST Utility to the latest version ??

Several people have updated the STLink firmware without any problems, but if course its hard to know if STM have changed what their STLink windows program downloads

If you did manage to trash your STLink board, it is possible to reflash it, but the only easy way to flash it back to being an older version of STLink is with another STLink dongle because Uart1 PA9,PA10 are not broken out to tracks or pads from the STM32, so its very hard to connect to them.
However there are 4 small solder pads for Vcc, Gnd, SWCLK and SWDIO

BTW. Although the STLink firmware bin, has never been released by STM, someone managed to de-encrypt it during an upgrade, so there is a copy of stlink 2.1 .bin kicking around the web in various places.

Re: Red Pill not working on USB after upload.

Umm. I have a red pill and it worked fine.

One thing you could check however is the electrical connections to the USB socket, as they break really really easily, and I use hot glue to hold my usb sockets down, and I’ve had to resolder the usb tracks from the socket several times.

Apart from that… Does the LED flash

Also…

Are you sure you downloaded the bin file.

Github has a nasty habit of saving off the HTML page when you go to a link like that

Open the bin file with a text editor and check it doesnt contain HTML

BTW. Its easy to take the stlink dongle apart, Just pull it from the end with the socket at the opposite end from the USB and the whole board pulls though and out that end of the tubular metal case

Github has a nasty habit of saving off the HTML page when you go to a link like that\

The ASCII view of the STM32 ST-Link Utility give me hint that the DOCTYPE are HTML …

I re-downloaded the raw binary and the RED Mini STM32 are working fine..

Uploading with auto-reset to DFU mode and reset again after the successfully flash..

Thanks again for the quick reply..

Will try the ST-Link V2 upgrade next..
[edit] The ST Link-V2 firmware was successfully upgraded to the latest version ….

No worries