STM32F103 Mini board
Cheap and useful development board with ARM Cortex M3 - STM32F103C8T6
Scheme
Typical scheme of all available on eBay and AliExpress boards
Board pinout
| Remap | Default | Reset | CN1 | Pin# | CN2 | Reset | Default | Remap |
|---|---|---|---|---|---|---|---|---|
| VBAT | 1 | +3.3V | ||||||
| TAMPER-RTC | C13 | C13 | 2 | GND | ||||
| OSC32_IN | C14 | C14 | 3 | +5V | ||||
| OSC32_OUT | C15 | C15 | 4 | B9 | B9 | TIM4_CH4 | I2C1_SDA/CANTX | |
| WKUP/USART2_CTS/ADC12_IN0/TIM2_CH1_ETR | A0 | A0 | 5 | B8 | B8 | TIM4_CH3 | I2C1_SCL /CANRX | |
| USART2_RTS/ADC12_IN1/TIM2_CH2 | A1 | A1 | 6 | B7 | B7 | I2C1_SDA/TIM4_CH2 | USART1_RX | |
| USART2_TX)/ADC12_IN2/TIM2_CH3 | A2 | A2 | 7 | B6 | B6 | I2C1_SCL/TIM4_CH1 | USART1_TX | |
| USART2_RX/ADC12_IN3/TIM2_CH4 | A3 | A3 | 8 | B5 | B5 | I2C1_SMBAl | TIM3_CH2/SPI1_MOSI | |
| SPI1_NSS/USART2_CK/ADC12_IN4 | A4 | A4 | 9 | B4 | JNTRST | TIM3_CH1/PB4/SPI1_MISO | ||
| SPI1_SCK/ADC12_IN5 | A5 | A5 | 10 | B3 | JTDO | TIM2_CH2/PB3/TRACESWO/SPI1_SCK | ||
| TIM1_BKIN | SPI1_MISO/ADC12_IN6/TIM3_CH1 | A6 | A6 | 11 | A15 | JTDI | TIM2_CH1_ETR/PA15/SPI1_NSS | |
| TIM1_CH1N | SPI1_MOSI/ ADC12_IN7/TIM3_CH2 | A7 | A7 | 12 | A12 | A12 | USART1_RTS/CANTX/USBDP/TIM1_ETR | |
| TIM1_CH2N | ADC12_IN8/TIM3_CH3 | B0 | B0 | 13 | A11 | A11 | USART1_CTS/CANRX/USBDM/TIM1_CH4 | |
| TIM1_CH3N | ADC12_IN9/TIM3_CH4 | B1 | B1 | 14 | A10 | A10 | USART1_RX/TIM1_CH3 | |
| TIM2_CH3 | I2C2_SCL/USART3_TX | B10 | B10 | 15 | A9 | A9 | USART1_TX/TIM1_CH2 | |
| TIM2_CH4 | I2C2_SDA/USART3_RX | B11 | B11 | 16 | A8 | A8 | USART1_CK/TIM1_CH1/MCO | |
| NRESET | 17 | B15 | B15 | SPI2_MOSI/TIM1_CH3N | ||||
| +3.3V | 18 | B14 | B14 | SPI2_MISO/USART3_RTS/TIM1_CH2N | ||||
| GND | 19 | B13 | B13 | SPI2_SCK/USART3_CTS/TIM1_CH1N | ||||
| GND | 20 | B12 | B12 | SPI2_NSS/I2C2_SMBAl/USART3_CK/TIM1_BKIN |