Freenove ESP32 User Manual

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Chapter 0 Install CH340 and Burn Firmware
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Burn the Firmware
For this product, ESP32 has burned the required firmware by default. If your ESP32 does not have the firmware
or the firmware does not work, please re-burn the firmware with the following steps.
We will explain respectively for Windows, Mac OS and Linux systems.
Linux
Check the Installation of CH340
Open the system terminal and type in the command: lsmod | grep usbserial. If your computer has installed
the driver, you should see the following information:
If the driver has been installed, you can determine the port used by ESP32 to communicate with your computer
in this way:
1. When ESP32 is not connected to your computer, open system terminal and type in the command ls
/dev/tty*
2. Connect ESP32 to your computer with a USB cable and type in the command ls /dev/tty* again.
Compare the results. As shown below, /dev/ttyUSB0 is the port that ESP32 communicates with your computer.
If your computer has installed CH340, you can click here to skip to the next step.
ESP32 not connecting to computer
ESP32 connecting to computer

Freenove ESP32 Specifications

General

Clock Speed	240 MHz
RAM	520 KB SRAM
Wi-Fi	802.11 b/g/n
UART	3
Operating Voltage	3.3V
Input Voltage	5V
DC Current per I/O Pin	40mA
USB	Micro USB
Microcontroller	ESP32
Chip	ESP32
Bluetooth	Bluetooth v4.2 BR/EDR and BLE standard
ADC Channels/Analog Input Pins	18
I2C	Yes
SPI	Yes
Interfaces	I2C, SPI, UART
CPU	Dual-Core 32-bit LX6 Microprocessor

Summary

Safety and Precautions

General Safety Guidelines

Outlines crucial safety measures for handling and using the robot kit to prevent injury or damage.

Hardware Components

ESP32 Expansion Board and Modules

Details the ESP32 expansion board, ESP32 module, camera, and other electronic components.

Mechanical Parts and Tools

Lists acrylic parts, servos, screws, nuts, standoffs, and necessary tools for assembly.

Software and Firmware Setup

CH340 Driver and Firmware Installation

Guides on installing the CH340 driver and burning firmware for OS.

Freenove App and Arduino IDE Setup

Covers installing the Freenove app and setting up the Arduino IDE environment.

ESP32 Pin Configuration

Details ESP32 pins, their functions, and descriptions for robot connectivity.

Robot Assembly and Calibration

Step-by-Step Assembly Guide

Details the process of assembling the robot's body, legs, head, and wiring.

Servo Wiring and Calibration

Guides on connecting ESP32, batteries, servos, and performing robot calibration.

Robot Functionality and Control

Freenove App Features

Overviews app features like Wi-Fi config, LED control, and interaction.

Ultrasonic Ranging and Motion Control

Explains ultrasonic sensor and provides code for robot movements.

Communication Protocols and Commands

Explains communication commands via Serial, BLE, Wi-Fi, and development aspects.