DFR0371

DFR0371 Datasheet

IO Expansion Shield for Bluno M3 SKU:DFR0371

Part	Datasheet
DFR0371	DFR0371 (pdf)

PDF Datasheet Preview
IO Expansion Shield for Bluno M3 SKU:DFR0371 Contents • 1 Introduction • 2 Specification • 3 Board Overview • 4 Interface Reference 5V-supported Pins Indicator LED “L” Color-coded 3-Pin Interface USART and I2C Interface 3.3V/5V operating voltage switch External Power port Servo power port 5~12V • 5 FAQ Introduction Say goodbye to messy cables! This IO shield is a powerful expansion shield for the Bluno M3. The breakouts for digital pins range from D0 to D38, including 5 UARTS, 8 PWM pins and 8 analog pins. The IO Expansion shield uses a convenient color coded 3 pin format for signal, voltage and ground that is useful if used with a large range of devices. The IO expansion shield also integrates an external power connector for servos - if you need to power a large array of servos, use the screw terminals to connect your power supply and drive them directly from your Bluno M3. It will switch to the right power source automatically. An intelligent power regulator allows you to connect a battery and USB cable simultaneously, and an on-board voltage switch makes it easy to change the output voltage, making 3.3V or 5V sensors compatible. Specification • Interface 39 GPIO pins with color-coded headers 8 PWM pins 8 Analog Input pins 5 UARTS 1 I2C/IIC 1 SPI External power connector for servos 3.3V/5V power switch • Dimensions 69mm * 54mm Board Overview Num. Name 1 Servo Power Port 5-12V 2 External Power Port 7-12V 3.3V/5V Operating Voltage Switch Select output voltage 4 Reset Button 5 UARTS and I2C Black GND; 6 Analog Input Ports Red 5V; Blue Analog Input pins 0~7 7 SPI Silk-Screen: 8 I/O Voltage Instruction White background supports 5V; Black background supports 3.3V only Black GND; 9 Digital I/O ports Red 5V; Green Digital I/O pins 0~38 Interface Reference Pins There are 17 5V-supported pins on the shield. • Digital I/O pins with white background support 5V power input • Digital I/O pins with black background support 3.3V power input only, be careful! Indicator LED “L” An on-board LED is connecting D13 digital I/O pin. Interface Green Digital Signal Blue Analog Signal Red VCC Black GND There are two rows pin headers beside the signal pin headers. They are arranged in regular sequence as Signal/VCC/GND, which is compatible with sensor pins order. All Red pins and Black pins are linked respectively. ’’’Note Since there are a lot of 5V signal analog sensors that have an operating voltage that is higher than Bluno's operating voltage, we have added bleeder circuits on the shield analog section. They can convert the voltage signal from 0~5V to 0~3.3V one and protect micro controller.’’’

PDF Datasheet Preview

IO Expansion Shield for Bluno M3 SKU:DFR0371

Contents
• 1 Introduction
• 2 Specification
• 3 Board Overview
• 4 Interface Reference
5V-supported Pins Indicator LED “L” Color-coded 3-Pin Interface USART and I2C Interface 3.3V/5V operating voltage switch External Power port Servo power port 5~12V
• 5 FAQ

Introduction

Say goodbye to messy cables! This IO shield is a powerful expansion shield for the Bluno M3. The breakouts for digital pins range from D0 to D38, including 5 UARTS, 8 PWM pins and 8 analog pins. The IO Expansion shield uses a convenient color coded 3 pin format for signal, voltage and ground that is useful if used with a large range of devices. The IO expansion shield also integrates an external power connector for servos - if you need to power a large array of servos, use the screw terminals to connect your power supply and drive them directly from your Bluno M3. It will switch to the right power source automatically. An intelligent power regulator allows you to connect a battery
and USB cable simultaneously, and an on-board voltage switch makes it easy to change the output voltage, making 3.3V or 5V sensors compatible.

Specification
• Interface 39 GPIO pins with color-coded headers 8 PWM pins 8 Analog Input pins 5 UARTS 1 I2C/IIC 1 SPI External power connector for servos 3.3V/5V power switch
• Dimensions 69mm * 54mm

Board Overview

Num.

Name
1 Servo Power Port
5-12V
2 External Power Port
7-12V
3.3V/5V Operating Voltage Switch Select output voltage
4 Reset Button
5 UARTS and I2C

Black GND;
6 Analog Input Ports

Red 5V;

Blue Analog Input pins 0~7
7 SPI

Silk-Screen:
8 I/O Voltage Instruction

White background supports 5V;

Black background supports 3.3V only

Black GND;
9 Digital I/O ports

Red 5V;

Green Digital I/O pins 0~38

Interface Reference

Pins

There are 17 5V-supported pins on the shield.
• Digital I/O pins with white background support 5V power input
• Digital I/O pins with black background support 3.3V power input only, be careful!

Indicator LED “L”

An on-board LED is connecting D13 digital I/O pin.

Interface

Green Digital Signal Blue Analog Signal Red VCC Black GND There are two rows pin headers beside the signal pin headers. They are arranged in regular sequence as Signal/VCC/GND, which is compatible with sensor pins order. All Red pins and Black pins are linked respectively. ’’’Note Since there are a lot of 5V signal analog sensors that have an operating voltage that is higher than Bluno's operating voltage, we have added bleeder circuits on the shield analog section. They can convert the voltage signal from 0~5V to 0~3.3V one and protect micro controller.’’’

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Datasheet ID: DFR0371 508742