DFRobot Gravity Series User Manual

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Gravity: I/O Expansion Shield for
Pyboard SKU:DFR0577
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Introduction
Gravity: I/O Expansion Shield for pyboard is an multifunctional expansion shield specially designed
for pyboard v1.1. It is compatible with various sensors and electronic modules of Gravity Series,
plug and play, no soldering required. It not only helps you avoid the complex wiring , welding and
other operations, but also helps you quickly complete wiring and get started with the sensors or
electronic modules, to build prototypes faster.
This expansion shield is equipped with an external power supply port and a 3.3V/VIN power switch,
which makes the expansion shield able to drive high current components such as motors and
servos. There are 12 sets of digital ports, 8 sets of analog ports, 1 set of serial port and 2 sets of I2C
ports on the expansion shield. Various modules can be easily connected to it. Additional, there is an
onboard 3.3V LDO, which meets the power demand of multiple modules at the same time. What’s
more, the RST button and the USR button are all on the shield, which is easy to reset or restore the
motherboard.

DFRobot Gravity Series Specifications

General

Brand	DFRobot
Model	Gravity Series
Category	I/O Systems
Language	English

Summary

Introduction

Specification

External Power Specifications

Details voltage range and input current limit for external power connection.

Connectivity Standards

Specifies connector type and available port types (digital, analog, serial, I2C).

Signal Level and Analog Input

Defines interface signal levels and the analog input range.

Onboard Power Management

Details onboard 3.3V LDO output voltage and current capacity.

Physical Dimensions

Provides the physical dimensions of the expansion shield.

Board Overview

Insertion Direction

Tutorial

Requirements

Hardware Requirements

Lists essential physical components needed for operation.

Software Requirements

Lists necessary software tools for development and programming.

Case 1: Analog Sound Sensor

Connection Diagram

Illustrates how to connect the Analog Sound Sensor to the shield.

Sample Code

Expected Result

Case 2: Analog Servo (PPM)

Connection Diagram

Shows how to connect the servo to the expansion shield.

Sample Code

Expected Result

FAQ