Raspberry Pi IO Expansion Board Hat

1. Getting Started

This guide introduces the DFR0566 IO Expansion HAT for Raspberry Pi, detailing its digital, analog, PWM, IIC, IIS, and SPI ports, and provides step-by-step instructions for enabling interfaces and executing programs, helping users effectively start their Raspberry Pi projects.

2. Example Code for Raspberry Pi-IIC

This article offers example code for utilizing Raspberry Pi-IIC's IIC ports via GPIO2 and GPIO3, focusing on integrating the SEN0303 VEML6075 UV sensor to output UVA, UVB, and UV index on the terminal.

3. Example Code for Raspberry Pi-Digital Port LED Blink

This article provides a step-by-step guide on how to make an LED blink using a Raspberry Pi by utilizing the GPIO ports, including the necessary hardware, software setup, wiring diagram, and Python sample code to control the LED blinking.

4. Example Code for Raspberry Pi-Servo Control

The article provides example code to control servo motors with a Raspberry Pi and the Gravity: IO Expansion HAT, featuring a demo program for servo rotation from 0 to 180 degrees, ideal for beginners seeking practical learning.

5. Example Code for Raspberry Pi-UART Gesture Sensor

This article details the process of setting up a Raspberry Pi with a UART gesture sensor including hardware and software preparations, installation commands, and execution of sample code for reading gesture and touch data.

6. Example Code for Raspberry Pi-Analog Port

7. Example Code for Raspberry Pi-SPI OLED Display

This article offers a comprehensive guide on using an SPI OLED display module with Raspberry Pi, including example code and setup instructions for enthusiasts looking to enhance their DIY electronics projects.

8. Example Code for Raspberry Pi-PWM Control

The article provides a detailed guide on controlling PWM channels using Raspberry Pi, from hardware setup and software configuration to running Python code for effective motor control.

Reference

Parameter	Details
Driver Maincontroller	STM32
Operating Voltage	5V
PWM External Power Supply	6-12V
PWM Pin Voltage	5V
Sensor Interface Power Supply	3.3V
Communication Interface	28 digital Ports, 4 groups of analog port, 3 groups of IIC port, 1 group of UART, 4 groups of 5V power interfaces, 1 group of SPI, 1 group of IIS port
Device Address	0x10
Outline Dimension	65×56mm/2.56×2.20”

Silkscreen	Label	Description
+	+	3.3V Positive
-	-	Negative
⊕	⊕	Binding post connect to external power positive
㊀	㊀	Binding post connect to external power negative
Digital	0-27	Raspberry Pi GPIO0-GPIO27
PWM	0-3	PWM signal output pin 0-3
Analog	0-3	Analog signal input pin 0-3
IIC	C	IIC port clock line
	D	IIC port data line
UART	T	UART Transmit port
	R	UART Receive port
5V	5V	5V positive
GND	GND	Negative
IIS	SCK	IIS serial clock line
	DIN	IIS serial data input
	LCK	IIS L/R channel selection line
	BCK	IIS system clock line
SPI	MISO	SPI data output line
	SS	SPI enable pin
	SCLK	SPI serial clock line
	MOSI	SPI data input line

Raspberry Pi IO Expansion Board Hat

Specification

Pinout