HiLetgo STM32F103C8T6 ARM STM32 Minimum System Development Board Module STM32F103C8T6 Core Learning Board for Arduino

I'm attempting to build a quadcopter from scratch, including the flight controller. I will be using code developed by someone else & enhancing it to meet my needs. I originally thought using an Arduino UNO would be the right hardware, but it turns out to be too slow. I discovered this board while watching some videos & it was easy to see it would be a better choice: 32 bit & a 72 mhz clock speed. There are enough 5 volt tolerant pins to use this board with a 3 cell LiPo battery & the appropriate voltage regulator. Sometimes referred to as the 'Blue Pill', there is significant discussion about it on the Internet. There is a development Add-In for the Arduino IDE, so you can work in a familiar environment. There is also another Open Source IDE, which will allow you to work @ a lower level, which, of course can provide a faster solution. Bottom Line....I hope to use this board for other projects.

It looks real STM32F chip, but something wrong when check the jtag chains:Device "STM32F103C8" selected.Connecting to target via SWD Found SW-DP with ID 0x1BA01477Found SW-DP with ID 0x1BA01477 Scanning AP map to find all available APsAP[0]: Stopped AP scan as end of AP map has been reached Iterating through AP map to find AHB-AP to useFound SW-DP with ID 0x1BA01477 Found SW-DP with ID 0x1BA01477Scanning AP map to find all available APs AP[1]: Stopped AP scan as end of AP map has been reachedAP[0]: AHB-AP (IDR: 0x14770011) Iterating through AP map to find AHB-AP to useAP[0]: Core found AP[0]: AHB-AP ROM base: 0xE00FF000CPUID register: 0xC11FC231. Implementer code: 0xC1 (???) Found Cortex-M3 r1p1, Little endian.FPUnit: 0 code (BP) slots and 0 literal slots CoreSight components:ROMTbl[0] @ E00FF000 ROMTbl[0][0]: E000E000, CID: B105E00D, PID: 001BB000 SCSROMTbl[0][1]: E0001000, CID: B105E00D, PID: 001BB002 DWT ROMTbl[0][2]: E0002000, CID: B105E00D, PID: 00000000 SCSROMTbl[0][3]: E0000000, CID: 00000000, PID: 001BB001 ??? ROMTbl[0][4]: E0040000, CID: B105900D, PID: 001BB923 TPIU-Lite****** Error: Could not find core in Coresight setup##### good STM32 chip for reference #####Connecting to target via SWDFound SW-DP with ID 0x1BA01477SWD speed too high. Reduced from 4000 kHz to 2700 kHz for stabilitySTM32 (connect): Can not attach to CPU. Trying connect under reset.Found SW-DP with ID 0x2BA01477SWD speed too high. Reduced from 2400 kHz to 1620 kHz for stabilityFound SW-DP with ID 0x2BA01477Scanning AP map to find all available APsAP[1]: Stopped AP scan as end of AP map has been reachedAP[0]: AHB-AP (IDR: 0x14770011)Iterating through AP map to find AHB-AP to useAP[0]: Core foundAP[0]: AHB-AP ROM base: 0xE00FF000CPUID register: 0xA12FC231. Implementer code: 0xA1 (???)Found Cortex-M3 r2p1, Little endian.FPUnit: 6 code (BP) slots and 2 literal slotsCoreSight components:ROMTbl[0] @ E00FF000ROMTbl[0][0]: E000E000, CID: 00B105E0, PID: 000BB000 ???ROMTbl[0][1]: E0001000, CID: 01B105E0, PID: 003BB002 ???ROMTbl[0][2]: E0000000, CID: B105E00D, PID: 003BB001 ITMROMTbl[0][3]: E0040000, CID: B105900D, PID: 003BB923 TPIU-LiteROMTbl[0][4]: E0040000, CID: 00000000, PID: 003BB923 ???ROMTbl[0][5]: E0041000, CID: B105900D, PID: 0D003B24 ???Cortex-M3 identified.

This is nice little STM32F103C8T6 development board that can be made to work with the Arduino IDE with a little bit of fiddling and tweaking.Build quality is mostly good - the USB ports on mine were only soldered to the board with a bare minimum of solder so I added a little extra as surface-mounted USB ports can be a bit fragile. It comes with the headers not installed, which is nice in case you don't want to add the headers. I was able to add the USB bootloader to one of them without issues, but the second one would not accept the bootloader at all. I'm not sure if it was defective, or if I did something wrong.All in all - a good buy and I'm happy with them.

The item is exactly as expected, and works perfectly.

This is a very easy Arduino upgrade. I will be using this in a LiDAR project where I was running up against the real-time processing limits of a traditional Arduino. These are very easy to use in the Arduino IDE:1. Add the STM32Duino board manager to Arduino2. install "STM32F1xx boards by stm32duino"3. install "Arduino SAM Boards (32 bit ARM Cortex M3)" if it isn't already. THIS WAS THE STEP THAT TRIPPED ME UP. Older version of the Arduino IDE included this by default but some of them (including the version from the Windows 10 app store) do not include.4. switch program jumper on the STM32F1 to "1"5. wire programmer6. hit reset button7. click uploadObviously once you've 'graduated' from the Arduino IDE or need additional performance, code for the STM32F can be compiled directly.

USB does not work. Tested traces but could not identify the issue. The chip will program via serial but USB is not functional. Avoid this if you want USB or want to use as a blue pill.

I'm really liking these STM32 chips. This module works as described and I'm using it to prototype a bigger project. I was a die-hard Z8Encore developer for nearly 15 years, but now that I've made the switch...goodbye Zilog :D

The board that I received did not have an STM32 MCU on it. Instead it had a CH32F103 MCU. I am having trouble finding any information about this MCU to tell if it's even close to an STM32 in specs.