PROTO

After producing the first few boards, the need for a quick prototyping board became obvious.

Schematic

PCB

The layout of the PCB becomes quite simple.

Example

In this example we will be using the PROTO board to test uart, i2c and spi communication by creating the following connections:

Peripheral	Signal	Pin		Pin	Signal	Peripheral
Core		Boot0	<-->	PC15		GPIO
UART2	TX	PA2	<-->	PC11	RX	UART3
UART2	RX	PA3	<-->	PC10	TX	UART3
I2C2	SCL	PB10	<-->	PA8	SCL	I2C3
I2C2	SDA	PB11	<-->	PC9	SDA	I2C3
SPI2	MOSI	PC3	<-->	PC12	MOSI	SPI3
SPI2	MISO	PC2	<-->	PB4	MISO	SPI3
SPI2	SCK	PB13	<-->	PB3	SCK	SPI3
SPI2	NSS	PB12	<-->	PA4	NSS	SPI3

Gallery

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