ESP32-S3-Pico

ESP32-S3-Pico Main Chip: ESP32-S3 Interface: USB Type-C

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Onboard Interfaces

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Overview

Introduction

ESP32-S3-Pico is a low-cost, high-performance microcontroller development board with a small size and rich peripheral interfaces.
The main chip chip is the ESP32-S3R2, which is an MCU chip that integrates 2.4 GHz Wi-Fi and Bluetooth 5 (LE).
The interface chips are CH343 and CH334, and you can experience the fun of USB and UART development with a USB-C port, no longer worrying about switching interfaces.
The DC-DC chip adopts MP28164, a high-efficiency buck-boost chip, which adopts PWM fixed-frequency current control mode to optimize circuit stability and response speed.
You can choose to develop using ESP-IDF, Arduino, or MicroPython environments, making it easy and quick to get started and apply it to products

Features

1. Adopts ESP32-S3R2 from Espressif as the main chip
2. Comes with Xtensa® 32-bit LX7 dual-core processor, capable of running at 240 MHz
3. Integrated 512KB SRAM, 384KB ROM, 2MB PSRAM, 16MB Flash memory
4. Type-C connector, easier to use
5. Onboard the CH343 and CH334 from Qinheng, you can experience the fun of USB and UART development with just one USB-C port
6. Onboard DC-DC chip MP28164, a high-efficiency DC-DC buck-boost chip with a load current of up to 2A
7. Supports a variety of low-power operating states, adjusts the optimal balance between communication distance, data rate and power consumption to meet the power consumption requirements of various application scenarios
8. 27 × multi-function GPIO pins
9. Castellated module allows to be directly welded and integrated into the user-designed base board
10. Rich peripheral interfaces, including full-speed USB OTG, SPI, I2C, UART, ADC, PWM and DVP (8-bit ~ 16-bit camera interface), LCD interface (8-bit ~ 16-bit parallel RGB, I8080, MOTO6800), etc. to achieve various functions flexibly

Pinout Definition

Note: Digital interfaces such as SPI, I2C, and UART can be mapped to most GPIO via GPIO switching matrix and IO MUX, see the datasheet for details

Dimensions

Development Environment Configuration

• The following development system is Windows by default

ESP-IDF

• It is recommended to use the VSC plugin for development

Develop with VSCode Plug-in

Install VSCode

1. Open the download page of the official VSCode website, and select the corresponding system and system bit to download
   
2. After running the installation package, the rest can be installed by default, but here for the subsequent experience, it is recommended to check boxes 1, 2, and 3
   
   • After the first two items are enabled, you can open VSCode directly by right-clicking files or directories, which can improve the subsequent user experience
   • After the third item is enabled, you can select VSCode directly when you choose how to open it

Install Espressif IDF Plugin

• Note: Currently the latest version of the plugin is V1.6.0, users can choose the same version as us for a consistent experience

1. Open VSCode, use Shift+Ctrl+X enter the plug-in manager
   
2. In the search bar, enter Espressif IDF to select the corresponding plug-in and click Install
   
3. Use the shortcut key F1 and enter

   esp-idf: configure esp-idf extension

   
   
4. Select express (This tutorial is intended for first-time installation users, so only the first general installation tutorial is covered)
5. After opening, it displays this interface
   
6. Choose the download server, we recommend users to use Espressif as your download server
   
7. Select the ESP-IDF version you want to download, we choose the latest V5.0.1 (note that ESP-IDF only supports ESP32-S3 after V4.4)
   
8. The following two are the installation paths respectively for the ESP-IDF container directory and the ESP-IDF Tools directory
   
   • Note: If you have installed ESP-IDF before, or failed to do so, please be sure to delete the file completely or create a new path without Chinese
9. After configuring, click Install to download
   
10. Enter the download interface, and then it will automatically install the corresponding tools and environment, just wait for a second
    
11. After the installation is complete, you will enter the following interface, indicating that the installation is finished
    

Run Official Demos

• The ESP official provides us with a large number of demos and detailed usage methods and effects Click here to view

Create Demo

1. Using the shortcut F1, enter

   esp-idf:show examples projects

   
   
2. Select your current IDF version
   
3. Take the Hello world demo as an example
   
4. ①Select the corresponding demo
5. ②Its readme will state what chip the demo applies to (how to use the demo and the file structure are described below, omitted here)
6. ③Click to create the demo
7. Select the path to save the demo, and require that the demos cannot use folders with the same name
   

Modify COM Port

1. The corresponding COM ports are shown here, click to modify them
   
2. The COM of our CH343 is COM5, so we choose COM5. Please choose the COM port corresponding to your CH343
   
3. Select the project or demo to use
   
4. Then we finish the modification of the COM ports

Modify Driver Object

1. The driver object used is displayed here, and you can click it to modify the corresponding driver object
   
2. Select the project or demo to use
   
3. Click and wait for a moment
   
4. Select the object we need to drive, which is our main chip ESP32S3
   
5. Choose the path to openocd, it doesn't affect us here, so let's just choose one
   

Other Status Bars

• ①SDK configuration editor, supports modifying many features and configurations of ESP-IDF
• ②All cleanup, and clear all compiled files
• ③Compile
• ④Current download mode, the default is UART
• ⑤Flash the current firmware, please do it after compiling
• ⑥Open the serial port monitor, used to view the serial port information
• ⑦Compile, flash,open the serial monitor, all-in-one button (most commonly used for debugging)

Compile, Flash and Serial Port Monitor

1. Click on the all-in-one button we described before to compile, flash and open the serial port monitor
   
2. It may take a long time to compile especially for the first time
   
   • During this process, the ESP-IDF may take up a lot of CPU resources, so it may cause the system to lag
3. Because we are using CH343 as a USB to serial port chip, and there is an automatic download circuit on board, it can be automatically downloaded without manual operation
   
4. After successful download, it will automatically enter the serial monitor, you can see the chip output the corresponding information and be prompted to restart after 10S
   

Arduino

• If you have not used Arduino ESP32 before, it is recommended to carefully read the official documentation, click here to view

Install Arduino IDE

1. Open the software download page of the official website, and select the corresponding system and system bit to download
   
2. You can choose to download directly or donate and download
   
3. Run the installer and install all by default

Install Arduino-esp32 Online

1. Open Preferences
   
2. Add the corresponding board management link, click the button
   
3. Add the following text in the first blank

   https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json

   
   
4. Save settings
5. Open the board manager and input ESP32 to search
   
6. Wait for the download
   
7. The arduino-esp32 download is complete
   

Install Arduino-esp32 Offline

1. Arduino-ESP32 offline component package
2. Unzip the compressed file
   
3. Place the unzipped files in the Arduino components package directory of the corresponding user

   C:\Users\{username}\AppData\Local\Arduino15\packages\

   Take the username waveshare as an example

   C:\Users\waveshare\AppData\Local\Arduino15\packages\

4. Close all arduino windows to make sure Arduino is turned off
5. Open Arduino, then open the board manager, you can see that esp32-arduino has been installed
   

Run Arduino Demos

1. Select the demo, here we choose the demo to get the chip ID
   
2. Choose our board as ESP32S3 Dev Module
   
3. Choose our port number, here we choose COM5 for CH343
   
4. Click the download button, and it will automatically compile and download
   
5. The download is complete
   
6. Open the serial port monitor
   
7. See the chip ID of the loop output
   

MicroPython

• If you don't have basic knowledge of MicroPython, you can check out MicroPython Official Documentation to learn

Flash Firmware

1. Click here to download the flashing tool and firmware
2. Unzip the package downloaded before and enter
   
3. Go to the flash_download_tool_3.9.4 folder and open the flash_download_tool_3.9.4.exe
   
4. Select the corresponding chip, here select ESP32-S3
   
5. Select the corresponding COM port, we have already configured other information for you. Click Start to begin the download
   
   • ① Select COM port
   • ② Click Download button

Install Thonny

1. Open Thonny official website
   
2. Select the appropriate system and version, here choose Windows, the mouse needs to be moved to the Windows section to display the corresponding information
   
3. Choose the default installation option
   
4. The installation is complete
   

Get Demo

1. Click here to download the demo
2. Unzip the compressed demo package
   

Run Demo

1. Open thonny and select Configure interpreter
   
2. Select MicroPython (ESP32) as the interpreter
   
3. Click OK to save
   
4. Click the Stop button or the shortcut Ctrl+F2
   
5. At this time, you can see the MicroPython version information and board name in the command line
   
6. Open the file serial port
   
7. Select our demo file and open a demo, here we choose the wifi-scan demo
   
   • ①Current local file directory
   • ②The demo wifi-scan.by we need to open
   • ③ESP32-S3-PICO directory
8. Click the Run button or the shortcut F5
   
9. Wait a moment, you can see the wifi information output by ESP32-S3 Pico
   

MicroPython Demo Explanation

• Most of the demos are based on Pico-Sensor-Kit-B.

In order to provide a better user experience with our firmware, we have integrated a py file in it to package scattered GPIO into a Pico pin sequence. The source code is as follows:

from micropython import const
D0 = const(11)
D1 = const(12)
D2 = const(13)
D3 = const(14)
D4 = const(15)
D5 = const(16)
D6 = const(17)
D7 = const(18)
D8 = const(33)
D9 = const(34)
D10= const(35)
D11= const(36)
D12= const(37)
D13= const(38)
D14= const(39)
D15= const(40)
D16= const(42)
D17= const(41)
D18= const(1)
D19= const(2)
D20= const(4)
D21= const(5)
D22= const(6)
D26= const(7)
D27= const(8)
D28= const(9)

A1= const(7)
A2= const(8)
A3= const(9)

RGB_PIN= const(21)
USB_ADC= const(3)

1-GPIO

Blink Effect Explanation

• Blink GPO10 corresponding to Raspberry Pi PICO (GP35 corresponding to ESP32-S3) at a frequency of 1 second

Key Effect Explanation

• Read the level of GPO3 corresponding to Raspberry Pi PICO (GP13 corresponding to ESP32-S3)
  • If it is a low level (button pressed), then flip the LED level

2-PWM

Fade Effect Explanation

• Output PWM frequency of GPIO12 corresponding to Raspberry Pi PICO (GP37 corresponding to ESP32-S3) at 1000Hz, with a duty cycle increasing or decreasing between 0% and 100%

Siren Effect Explanation

• Output PWM duty cycle of 30% for GPO12 corresponding to Raspberry Pi PICO (GP37 corresponding to ESP32-S3), with frequency increasing or decreasing between 600-1400Hz

3-UART

UART Effect Explanation

• Use the GPIO0 of Raspberry Pi PICO (corresponding to GP11 of ESP32-S3) and GPIO1 (corresponding to GP12 of ESP32-S3) as the TX and RX pins of UART for UART echo

4-I2C

I2C-OLED Effect Explanation

• Use GPIO6 of Raspberry Pi PICO (corresponding to GP17 of ESP32-S3) and GPIO7 (corresponding to GP18 of ESP32-S3) as SDA and SCL pins of I2C to drive the 1.5inch OLED module

I2C-SCAN Effect Explanation

• Use the GPIO8 of Raspberry Pi PICO (corresponding to GP33 of ESP32-S3) and GPIO9 (corresponding to GP34 of ESP32-S3) as the SDA and SCL pins of I2C to scan the device addresses on the I2C bus

5-SPI

Pico-LCD-1.3 Effect Explanation

• Can drive PICO-LCD-1.3 module

6-ADC

adc Effect Explanation

• Read the voltage values of GPO26-29 pins on Raspberry Pi PICO in sequence and output the information

7-RGB

rgb Effect Explanation

• Light up the onboard RGB-LED and keeps changing colors

8-SYS

FLASH-SIZE Effect Explanation

• Output remaining FLASH space

RAM-SIZE Effect Explanation

• Output remaining and used RAM space

RTC Effect Explanation

• Set the RTC time and loop to read the RTC values

SLEEP Effect Explanation

• Set ESP32-S3 to deep sleep for 10 seconds, it will automatically reset and restart when the sleep time is reached

WDT Effect Explanation

• Set the watchdog and wait for it to reset

9-WIFI

Scan Effect Explanation

• Scan the surrounding WiFi signals and display relevant information

Resources

Schematic Diagram

• ESP32-S3-Pico Schematic

Demos

• MicroPython Demo

Software

ESP32-S3

• Flashing software & MicroPython firmware
• Thonny Python IDE (Windows V3.3.3)

Arduino

• Arduino-ESP32 offline component package

CH343

• Window VCP driver
• Android APP
• MAC driver

Serial Port

• SSCOM debugging assistant

Datasheets

ESP32-S3

• ESP32-S3 Datasheet
• ESP32-S3 Technical reference manual

CH343

• CH343 Datasheet

Official Documents

Raspberry Pi Official Documents

• ESP32-Arduino official documentation
• ESP-IDF official documents

MicroPython Official Documents

• MicroPython official documentation

FAQ

Support

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