The Arduino Nano ESP32 (with and without headers) is a Nano form factor board based on the ESP32-S3 (embedded in the NORA-W106-10B from u-blox). This is the first Arduino board to be based fully on an ESP32, and features Wi-Fi, Bluetooth LE, debugging via native USB in the Arduino IDE as well as low power. The Nano ESP32 is compatible with the Arduino IoT Cloud, and has support for MicroPython. It is an ideal board for getting started with IoT development. Features
Tiny footprint: Designed with the well-known Nano form factor in mind, this board's compact size makes it perfect for embedding in standalone projects.
Wi-Fi and Bluetooth: Harness the power of the ESP32-S3 microcontroller, well-known in the IoT realm, with full Arduino support for wireless and Bluetooth connectivity.
Arduino and MicroPython support: Seamlessly switch between Arduino and MicroPython programming with a few simple steps.
Arduino IoT Cloud compatible: Quickly and easily create IoT projects with just a few lines of code. The setup takes care of security, allowing you to monitor and control your project from anywhere using the Arduino IoT Cloud app.
HID support: Simulate human interface devices, such as keyboards or mice, over USB, opening up new possibilities for interacting with your computer. Specifications Microcontroller u-blox NORA-W106 (ESP32-S3) USB connector USB-C Pins Built-in LED pins 13 Built-in RGB LED pins 14-16 Digital I/O pins 14 Analog input pins 8 PWM pins 5 External interrupts All digital pins Connectivity Wi-Fi u-blox NORA-W106 (ESP32-S3) Bluetooth u-blox NORA-W106 (ESP32-S3) Communication UART 2x I²C 1x, A4 (SDA), A5 (SCL) SPI D11 (COPI), D12 (CIPO), D13 (SCK). Use any GPIO for Chip Select (CS) Power I/O Voltage 3.3 V Input voltage (nominal) 6-21 V Source Current per I/O pin 40 mA Sink Current per I/O pin 28 mA Clock speed Processor Up to 240 MHz Memory ROM 384 kB SRAM 512 kB External Flash 128 Mbit (16 MB) Dimensions 18 x 45 mm Downloads Datasheet Schematics
The ESP32-WROOM-32, measuring 25.2 x 18 mm only, contains the ESP32 SoC, flash memory, precision discrete components, and PCB antenna to provide outstanding RF performance in space-constrained applications.
ESP32-WROOM-32 is a powerful, generic Wi-Fi + BT + BLE MCU module that targets a wide variety of applications, ranging from low-power sensor networks to the most demanding tasks, such as voice encoding, music streaming and MP3 decoding.
At the core of this module is the ESP32-D0WDQ6 chip. The chip embedded is designed to be scalable and adaptive. There are two CPU cores that can be individually controlled, and the clock frequency is adjustable from 80 MHz to 240 MHz. The user may also power off the CPU and make use of the low-power co-processor to monitor the peripherals for changes or crossing of thresholds constantly. ESP32 integrates a rich set of peripherals, ranging from capacitive touch sensors, Hall sensors, SD card interface, Ethernet, high-speed SPI, UART, I²S and I²C.
The integration of Bluetooth, Bluetooth LE and Wi-Fi ensures that a wide range of applications can be targeted and that the module is future proof. Using Wi-Fi allows a vast physical range and direct connection to the internet through a Wi-Fi router while using Bluetooth allows the user to conveniently connect to the phone or broadcast low energy beacons for its detection.
The sleep current of the ESP32 chip is less than 5 µA, making it suitable for battery powered and wearable electronics applications. ESP32 supports a data rate of up to 150 Mbps, and 20.5 dBm output power at the antenna to ensure the broadest physical range. As such the chip does offer industry-leading specifications and the best performance for electronic integration, range, power consumption, and connectivity.
Downloads
Datasheet
At the core of this module is ESP32-S2, an Xtensa® 32-bit LX7 CPU that operates at up to 240 MHz. The chip has a low-power co-processor that can be used instead of the CPU to save power while performing tasks that do not require much computing power, such as monitoring of peripherals. ESP32-S2 integrates a rich set of peripherals, ranging from SPI, I²S, UART, I²C, LED PWM, TWAITM, LCD, Camera interface, ADC, DAC, touch sensor, temperature sensor, as well as up to 43 GPIOs. It also includes a full-speed USB On-The-Go (OTG) interface to enable USB communication.FeaturesMCU
ESP32-S2 embedded, Xtensa® single-core 32-bit LX7 microprocessor, up to 240 MHz
128 KB ROM
320 KB SRAM
16 KB SRAM in RTC
WiFi
802.11 b/g/n
Bit rate: 802.11n up to 150 Mbps
A-MPDU and A-MSDU aggregation
0.4 µs guard interval support
Center frequency range of operating channel: 2412 ~ 2484 MHz
Hardware
Interfaces: GPIO, SPI, LCD, UART, I²C, I²S, Camera interface, IR, pulse counter, LED PWM, TWAI (compatible with ISO 11898-1), USB OTG 1.1, ADC, DAC, touch sensor, temperature sensor
40 MHz crystal oscillator
4 MB SPI flash
Operating voltage/Power supply: 3.0 ~ 3.6 V
Operating temperature range: –40 ~ 85 °C
Dimensions: 18 × 31 × 3.3 mm
Applications
Generic Low-power IoT Sensor Hub
Generic Low-power IoT Data Loggers
Cameras for Video Streaming
Over-the-top (OTT) Devices
USB Devices
Speech Recognition
Image Recognition
Mesh Network
Home Automation
Smart Home Control Panel
Smart Building
Industrial Automation
Smart Agriculture
Audio Applications
Health Care Applications
Wi-Fi-enabled Toys
Wearable Electronics
Retail & Catering Applications
Smart POS Machines
The ESP32-PICO-Kit fits into a mini breadboard. It is fully functional with the minimum number of discrete components, while it has all the ESP32 pins exposed.
Features
Complete up-to-date documentation is available.
All instructions and commands presented work as described.
Plentiful additional information and hardware documentation are available too.
Applications for the ESP32-PICO-KIT can be developed on Windows, Linux or Mac.
Two cores and a radio
Like the ESP8266 the ESP32 has Wi-Fi but adds Bluetooth. It also has two 32-bit cores inside, making it extremely powerful, and providing all the ports and interfaces that the ESP8266 is lacking.Oversimplifying things, one might say that the ESP8266 is a Wi-Fi controller that provides some I/O, whereas the ESP32 is a full-fledged controller that also has Wi-Fi.
ESP32 peripherals
The ESP32 exposes an ADC & DAC, touch sensor circuitry, an SD/SDIO/MMC host controller, an SDIO/SPI slave controller, an EMAC, PWM to control LEDs and motors, UART, SPI, I²C, I²S, infrared remote controller, and, of course, GPIO.
ESP32-PICO-KIT Development board
The ESP32-PICO-D4 is a System-on-Chip (SoC) integrating an ESP32 chip together with a 4 MB SPI flash memory in a tiny 7 x 7 mm package.
The ESP32-PICO-KIT is a breakout board for this SoC with an onboard USB-to-serial converter for easy programming and debugging.
Besides the board, you'll need a programming toolchain. Complete, up-to-date documentation from Espressif is available on the Read the Docs website.
All instructions and commands presented work as described.Plentiful additional information and hardware documentation are available too.
Applications for the ESP32-PICO-KIT can be developed on Windows, Linux or Mac.
At the core of this module is ESP32-S2, an Xtensa® 32-bit LX7 CPU that operates at up to 240 MHz. The chip has a low-power co-processor that can be used instead of the CPU to save power while performing tasks that do not require much computing power, such as monitoring of peripherals. ESP32-S2 integrates a rich set of peripherals, ranging from SPI, I²S, UART, I²C, LED PWM, TWAITM, LCD, Camera interface, ADC, DAC, touch sensor, temperature sensor, as well as up to 43 GPIOs. It also includes a full-speed USB On-The-Go (OTG) interface to enable USB communication.FeaturesMCU
ESP32-S2 embedded, Xtensa® single-core 32-bit LX7 microprocessor, up to 240 MHz
128 KB ROM
320 KB SRAM
16 KB SRAM in RTC
WiFi
802.11 b/g/n
Bit rate: 802.11n up to 150 Mbps
A-MPDU and A-MSDU aggregation
0.4 µs guard interval support
Center frequency range of operating channel: 2412 ~ 2484 MHz
Hardware
Interfaces: GPIO, SPI, LCD, UART, I²C, I²S, Camera interface, IR, pulse counter, LED PWM, TWAI (compatible with ISO 11898-1), USB OTG 1.1, ADC, DAC, touch sensor, temperature sensor
40 MHz crystal oscillator
4 MB SPI flash
Operating voltage/Power supply: 3.0 ~ 3.6 V
Operating temperature range: –40 ~ 85 °C
Dimensions: 18 × 31 × 3.3 mm
Applications
Generic Low-power IoT Sensor Hub
Generic Low-power IoT Data Loggers
Cameras for Video Streaming
Over-the-top (OTT) Devices
USB Devices
Speech Recognition
Image Recognition
Mesh Network
Home Automation
Smart Home Control Panel
Smart Building
Industrial Automation
Smart Agriculture
Audio Applications
Health Care Applications
Wi-Fi-enabled Toys
Wearable Electronics
Retail & Catering Applications
Smart POS Machines
The Elektor ESP32 Energy Meter is a device designed for real-time energy monitoring and smart home integration. Powered by the ESP32-S3 microcontroller, it offers robust performance with modular and scalable features.
The device uses a 220 V-to-12 V step-down transformer for voltage sampling, ensuring galvanic isolation and safety. Its compact PCB layout includes screw-type terminal blocks for secure connections, a Qwiic connector for additional sensors, and a programming header for direct ESP32-S3 configuration. The energy meter is compatible with single-phase and three-phase systems, making it adaptable for various applications.
The energy meter is simple to set up and integrates with Home Assistant, offering real-time monitoring, historical analytics, and automation capabilities. It provides accurate measurements of voltage, current, and power, making it a valuable tool for energy management in homes and businesses.
Features
Comprehensive Energy Monitoring: Get detailed insights into your energy usage for smarter management and cost savings.
Customizable Software: Tailor functionality to your needs by programming and integrating custom sensors.
Smart Home Ready: Compatible with ESPHome, Home Assistant, and MQTT for full Smart Home integration.
Safe & Flexible Design: Operates with a 220 V-to-12 V step-down transformer and features a pre-assembled SMD board.
Quick Start: Includes one Current Transformer (CT) sensor and access to free setup resources.
Specifications
Microcontroller
ESP32-S3-WROOM-1-N8R2
Energy Metering IC
ATM90E32AS
Status Indicators
4x LEDs for power consumption indication2x Programmable LEDs for custom status notifications
User Input
2x Push buttons for user control
Display Output
I²C OLED display for real-time power consumption visualization
Input Voltage
110/220 V AC (via step-down transformer)
Input Power
12 V (via step-down transformer or DC input)
Clamp Current Sensor
YHDC SCT013-000 (100 A/50 mA) included
Smart Home Integration
ESPHome, Home Assistant, and MQTT for seamless connectivity
Connectivity
Header for programming, Qwiic for sensor expansion
Applications
Supports single-phase and three-phase energy monitoring systems
Dimensions
79.5 x 79.5 mm
Included
1x Partly assembled board (SMDs are pre-mounted)
2x Screw terminal block connerctors (not mounted)
1x YHDC SCT013-000 current transformer
Required
Power transformer not included
Downloads
Datasheet (ESP32-S3-WROOM-1)
Datasheet (ATM90E32AS)
Datasheet (SCT013-000)
Frequently Asked Questions (FAQ)
From Prototype to Finished Product
What started as an innovative project to create a reliable and user-friendly energy meter using the ESP32-S3 microcontroller has evolved into a robust product. Initially developed as an open-source project, the ESP32 Energy Meter aimed to provide precise energy monitoring, smart home integration and more. Through meticulous hardware and firmware development, the energy meter now stands as a compact, versatile solution for energy management.
Lo-Fi (ESP32 + LoRa combination) is the perfect solution for anyone looking to establish long-range wireless communication in a variety of applications with WiFi capabilities. LoRa offers exceptional range and easy connectivity, it allows you to seamlessly communicate with devices up to 5 km away.
Devices provide an efficient and trustworthy choice for long-range wireless communication in addition to WiFi access to link internet clouds best suited for Internet of Things applications, enabling connectivity in remote and challenging settings.
Features
Device powered by powerful ESP32 S3 WROOM-1 which is having Xtensa dual-core 32-bit LX7 microprocessor, up to 240 MHz
Inbuilt Wi-Fi & Bluetooth LE for wireless connectivity
Type C interface for Programming/Power
1.14" TFT display for visual interactions
GPIO breakouts for interfacing additional peripherals
Breadboard compatible for easy DIY breadboarding projects
2 separate user programmable buttons along with Reset and Boot buttons
3.7 V Lithium Battery connector for a portable use case with an onboard charging option
Use new generation LoRa spread spectrum to ensure stable communication
For LoRa, faster speed and a longer data transmission range of up to 5 km
Applications
Internet of Things (IoT)
Smart Home Automation
Agricultural Automation
Emergency Services
Environmental Monitoring
Industrial Automation
Specifications
Microcontroller: ESP32 S3 WROOM-1
Wireless Interface: WiFi, BLE, LoRa
Protocol: 802.11b/g/n, Bluetooth 5.0
Memory Size: 16 MB Flash, 384 kB ROM, 8 MB SRAM
Supply Voltage: 5 V
Operating Voltage: 3.3 V
Display Size: 1.14”
Display Type: TFT
Display resolution: 135 x 240 pixels
Display driver: ST7789V
Display Appearance: RGB
Display color: 4k/65k/252k
Display Luminance: 400 Cd/m²
Operating Temperature: -20 to 70°C
Storage Temperature: -30 to 80°C
LoRa Module Specs:
Carrier Frequency (License Free ISM): 868 MHz
Chip: Based on SX1262 RF chip
Range: 5Km
Transmitting Power: 22 dBm
Receiving Sensitivity: -147 dbm
Data Rate: Up to 62.5 kbps
Communication Port: UART serial
Downloads
Getting started guide
Hardware design files
Included
1x Lo-Fi Board
1x Antenna (868 MHz)
Easy and Affordable Digital Signal Processing
The aim of this book is to teach the basic principles of Digital Signal Processing (DSP) and to introduce it from a practical point of view using the bare minimum of mathematics. Only the basic level of discrete-time systems theory is given, sufficient to implement DSP applications in real time. The practical implementations are described in real time using the highly popular ESP32 DevKitC microcontroller development board. With the low cost and extremely popular ESP32 microcontroller, you should be able to design elementary DSP projects with sampling frequencies within the audio range. All programming is done using the popular Arduino IDE in conjunction with the C language compiler.
After laying a solid foundation of DSP theory and pertinent discussions on the main DSP software tools on the market, the book presents the following audio-based sound and DSP projects:
Using an I²S-based digital microphone to capture audio sound
Using an I²S-based class-D audio amplifier and speaker
Playing MP3 music stored on an SD card through an I²S-based amplifier and speaker
Playing MP3 music files stored in ESP32 flash memory through an I²S-based amplifier and speaker
Mono and stereo Internet radio with I²S-based amplifiers and speakers
Text-to-speech output with an I²S-based amplifier and speaker
Using the volume control in I²S-based amplifier and speaker systems
A speaking event counter with an I²S-based amplifier and speaker
An adjustable sinewave generator with I²S-based amplifier and speaker
Using the Pmod I²S2 24-bit fast ADC/DAC module
Digital low-pass and band-pass real-time FIR filter design with external and internal A/D and D/A conversion
Digital low-pass and band-pass real-time IIR filter design with external and internal A/D and D/A conversion
Fast Fourier Transforms (FFT)
This hardware kit is especially prepared for 'The Official ESP32 Book'. The kit contains all the components used in the projects in this book. With the help of this hardware kit it should be easy and fun to build the projects in the book.
Included
1x ESP32 DevKitC
8x LEDs (RED)
1x LED (GREEN)
2x push-button
8x 330 ohm resistors
1x Buzzer
1x RGB LED
1x TMP36 temperature sensor chip
1x DHT11 temperature and humidity chip
1x MCP23017 (DIL 28 package)
1x LDR
1x BC108 (or any other PNP) transistor
1x 7 segment LED
1x Small Microphone Module
1x I²C LCD
1x SG90 servo
1x 4x4 Keypad
8x Female-Male jumpers
4x Male-Male jumpers
1x Small breadboard
The Arduino Nano ESP32 is a Nano form factor board based on the ESP32-S3 (embedded in the NORA-W106-10B from u-blox). This is the first Arduino board to be based fully on an ESP32, and features Wi-Fi, Bluetooth LE, debugging via native USB in the Arduino IDE as well as low power.
The Nano ESP32 is compatible with the Arduino IoT Cloud, and has support for MicroPython. It is an ideal board for getting started with IoT development.
Features
Tiny footprint: Designed with the well-known Nano form factor in mind, this board's compact size makes it perfect for embedding in standalone projects.
Wi-Fi and Bluetooth: Harness the power of the ESP32-S3 microcontroller, well-known in the IoT realm, with full Arduino support for wireless and Bluetooth connectivity.
Arduino and MicroPython support: Seamlessly switch between Arduino and MicroPython programming with a few simple steps.
Arduino IoT Cloud compatible: Quickly and easily create IoT projects with just a few lines of code. The setup takes care of security, allowing you to monitor and control your project from anywhere using the Arduino IoT Cloud app.
HID support: Simulate human interface devices, such as keyboards or mice, over USB, opening up new possibilities for interacting with your computer.
Specifications
Microcontroller
u-blox NORA-W106 (ESP32-S3)
USB connector
USB-C
Pins
Built-in LED pins
13
Built-in RGB LED pins
14-16
Digital I/O pins
14
Analog input pins
8
PWM pins
5
External interrupts
All digital pins
Connectivity
Wi-Fi
u-blox NORA-W106 (ESP32-S3)
Bluetooth
u-blox NORA-W106 (ESP32-S3)
Communication
UART
2x
I²C
1x, A4 (SDA), A5 (SCL)
SPI
D11 (COPI), D12 (CIPO), D13 (SCK). Use any GPIO for Chip Select (CS)
Power
I/O Voltage
3.3 V
Input voltage (nominal)
6-21 V
Source Current per I/O pin
40 mA
Sink Current per I/O pin
28 mA
Clock speed
Processor
Up to 240 MHz
Memory
ROM
384 kB
SRAM
512 kB
External Flash
128 Mbit (16 MB)
Dimensions
18 x 45 mm
Downloads
Datasheet
Schematics
Take control of your smart environment with the compact and powerful 4-inch ESP32-S3 IPS Touchscreen Control Panel. Designed for high performance and versatility, this sleek 86-box format panel integrates advanced connectivity, intuitive touch control, and real-time environmental sensing.
Features
Powerful Core Module WT32-S3-WROVER-N16R8
4-inch IPS full-screen display
Resolution: 480 x 480 pixels (RGB565 format)
Screen Driver IC: GC9503V
Touch Controller IC: FT6336U
Equipped with an SHT20 Temperature and Humidity Sensor for real-time monitoring of environmental conditions.
RS485 Interface using an automatic transceiver circuit
Built-in WiFi and Bluetooth
Applications
Smart Home Control Panels
Industrial Automation Interfaces
Environmental Monitoring Systems
IoT Projects and Custom Smart Solutions
Introducing the Elecrow ESP32 Terminal, a revolutionary handheld device engineered to elevate your projects to new heights. Boasting a 3.5″ 480 × 320 TFT capacitive...