Introduction
The Arduino esp32 board package just got updated, and now there are a couple of new programming methods available. Arduino is introducing an online version of the Arduino IDE called the Arduino webint editor, and they are also developing the Arduino iot Cloud for code deployment and result visualization. In this article, we will explore these options and see if they are worth trying.
When it comes to choosing development boards for your projects, the Raspberry Pi Pico often takes the spotlight. However, let’s not overlook the Arduino Nano ESP32, a budget-friendly option that offers impressive performance. In this article, we will explore the features and benefits of the Arduino Nano ESP32 and discuss why it might be the smarter choice for your next project.
The Arduino Nano esp32: An Overview
The Arduino Nano esp32 is a microcontroller board powered by an esp32 chip. In this article, we will review the Nano esp32 and explore its features and capabilities. Additionally, we will discuss how to program this board and provide a demonstration to showcase its potential.
The Arduino Nano Family Lineup
Let’s begin by understanding where the Nano esp32 fits into the Arduino Nano family lineup. To start, there are five main Nano types available. The first is the basic Arduino Nano, which is powered by an atmega328 chip and doesn’t have many additional features. However, this board is available from Arduino at a higher price of 20 euros.
Next, we have the Arduino Nano Every, which introduced a more advanced microcontroller, the atmega4809, as a replacement for the atmega328. Despite this upgrade, there weren’t significant changes in functionality. Arduino lists this board at a price of 12 euros 50.
Now, let’s move on to the more intriguing Arduino Nano 33 series, with “33” denoting the 3.3-volt operating voltage of these boards compared to the previous 5-volt versions. There are three versions available: the IoT, BLE, and BLE Sense.
Programming the Arduino Nano esp32
To program the Arduino Nano esp32, you can use the Arduino IDE. This integrated development environment is user-friendly and supports various programming languages. Moreover, the IDE provides a wide range of libraries and examples that make programming the board easier.
One notable feature of the Arduino Nano esp32 is its built-in WiFi and Bluetooth capabilities. With these wireless communication options, you can connect your projects to the internet or other devices seamlessly. This opens up a world of possibilities for IoT applications and remote control of your projects.
Demonstrating the Capabilities
Now, let’s dive into a demonstration to showcase the capabilities of the Arduino Nano esp32. We will create a simple project where we control an LED using a button. By connecting the LED to one of the GPIO pins and the button to another, we can program the board to detect button presses and toggle the LED accordingly.
Using the Arduino IDE, we will write a code that continuously checks the button’s status. When the button is pressed, the program will toggle the LED’s state. This simple project demonstrates how easily you can interact with external components using the Arduino Nano esp32.
The Exciting World of IoT Boards
The Sam D21 Powered Board
The IoT board that we’ll be focusing on today is the Sam D21 powered board. It is equipped with a u-blox, Wi-Fi, and Bluetooth module. This board offers an impressive range of features and functionalities.
The BLE Version Powered by NRF 52840
For those specifically looking for Bluetooth functionality, the BLE version of the Sam D21 powered board is powered by the NRF 52840. This variant is perfect for sports enthusiasts who rely on Bluetooth connectivity in their devices.
The BLE Sense Version
If you’re someone who requires additional functionalities, then the BLE Sense version of the Sam D21 powered board is a great option. In addition to the features of the BLE version, it also includes extras such as an IMU, a microphone, and a barometric sensor.
The Arduino Nano RP2040 Connect
Another excellent IoT board to consider is the Arduino Nano RP2040 Connect. This compact board is powered by the RB2040 microcontroller and offers a wide range of features. It supports Bluetooth and Wi-Fi connectivity, and also includes an onboard microphone and IMU.
The Arduino Nano ESP32
If you’re on a budget but still need good connectivity, the Arduino Nano ESP32 is a great choice. While it may not have as many extra features as the other boards mentioned, it still offers reliable connectivity at an affordable price point.
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The Arduino Nano ESP32: A Closer Look
Arduino boards have long been a staple in the world of embedded systems, and the Arduino Nano ESP32 is no exception. With its compact size and impressive features, it offers a convenient and powerful solution for DIY electronics projects. In this article, we’ll take a closer look at this board and explore its specifications, form factor, and potential limitations.
Form Factor and Dimensions
The Arduino Nano ESP32 adheres to the standard Arduino Nano form factor, measuring 43.18 millimeters by 17.78 millimeters. This compact size makes it suitable for applications where space is limited. Whether you’re building a small robot or a wearable device, this board is designed to fit seamlessly into your project.
Pin Compatibility
If you’re familiar with previous Nano boards, you’ll be pleased to know that the pinout of the Arduino Nano ESP32 matches all its predecessors. This means you can easily transition your existing projects to this new board without the need for major modifications. However, it’s important to note that the operating voltage of the Nano ESP32 is 3.3 volts, unlike the 4 or 5 volts found in the baseline Arduino Nano or Nano Every. Keep this in mind when considering compatibility with your existing projects.
Connectivity Options
One notable feature of the Arduino Nano ESP32 is the use of a USB-C connector instead of the typical micro USB found on previous Nano boards. This offers increased durability and a more reliable connection. The inclusion of a reset button and three LEDs further enhances the user experience, allowing for easy troubleshooting and monitoring of the board’s status.
Pricing and Availability
The Arduino Nano ESP32 is available for purchase from the official Arduino website, with options for pre-soldered headers or DIY soldering. The board itself is priced at 18 Euros or 20 USD, with an additional cost for shipping. While the price may vary depending on your location, it remains an affordable option for anyone looking to delve into the world of embedded systems.
The LED Indicators
One of the notable features of this board is the presence of LED indicators. These LEDs serve different purposes and provide valuable information to the user. Firstly, there is an LED that indicates activity over the SPI sck line or the serial clock line. This LED can also be manually toggled by the user. This feature can be handy in troubleshooting or monitoring the communication activity of the board.
Another LED on the board is an RGB LED. Unlike a neopixel, this LED is not programmable. It consists of a red, green, and blue LED packaged together. However, what makes it interesting is that it can be controlled using three individual gpio pins. This allows for separate control over each color, enabling the user to create a variety of lighting effects or signals.
External Flash Storage
With 16 megabytes or 128 megabits of external flash storage, this board offers ample space for storing data or programs. The onboard flash chip supports the Nora w106 10B module from u blocks. This module, in turn, contains an esp32, S3 SOC, and an onboard antenna. The esp32 S3 is a powerful dual-core 32-bit microcontroller that runs at a clock speed of up to 240 megahertz.
While the esp32 S3 has 384 kilobytes of ROM (read-only memory) and 512 kilobytes of SRAM (static random-access memory), the u-blox module provides an additional eight megabytes of onboard PS RAM. It’s worth noting that there is no on-chip flash storage for user programs. Hence, the presence of the external flash chip on the board becomes crucial for storing and executing programs on the board.
Wireless Connectivity
The esp32 S3 chip on this board comes with Wi-Fi 4 support. It is compliant with the 802.11 b/g/n standards, allowing for reliable wireless connectivity. However, it only supports 2.4 gigahertz Wi-Fi frequency, which may limit its compatibility with networks operating on other frequencies.
In terms of data transfer rates, this chip can achieve a maximum rate of 150 megabits per second. Despite the impressive specifications provided by Arduino data sheets, it is essential to consider real-world performance limitations. While the data sheets claim a range of 500 meters, it is highly unlikely to achieve such a range in practical scenarios. Factors like obstacles, interference, and environmental conditions can significantly affect the actual range.
Additionally, the esp32 chip also supports Bluetooth 5 low energy. This opens up possibilities for wireless connectivity beyond Wi-Fi. With a maximum data rate of up to 2 megabits per second, the esp32 chip ensures seamless communication between the board and compatible devices.
The Features of the ESP32 S3
The ESP32 S3 is a versatile microcontroller that offers a wide range of features. It includes four SPI ports, three UART ports, two I2C interfaces, two I2S interfaces, an 8-channel PWM controller, a USB On-The-Go interface, a CAN interface (TWAI Controller), an LCD interface, and a DVP camera interface. Additionally, it is equipped with two 12-bit ADCs, which provide up to 20 channels and can be sampled at a rate of up to 100 kilo samples per second. The ESP32 S3 also includes some low-power co-processors to complement its main cores for efficient power usage.
Power Consumption Testing
To assess the power consumption of the ESP32 S3, some tests were conducted. The results are as follows:
Idle Power Consumption
When the ESP32 S3 was idling in a loop, it consumed 31 milliamps of power. This indicates that even when not performing any specific tasks, the microcontroller still draws a considerable amount of power.
Wi-Fi Transmission
During Wi-Fi transmission, the power consumption increased to 300 milliamps. This higher power draw is due to the increased energy required for data transfer over the wireless network.
Bluetooth Reception
When receiving data over Bluetooth, the power consumption dropped to 95 milliamps. This decrease in power usage can be attributed to the lower energy requirements for receiving data compared to transmitting.
Transmitting in Deep Sleep Mode
In deep sleep mode, while transmitting data, the ESP32 S3 consumed a maximum of 210 milliamps. This higher power draw in deep sleep mode can be attributed to the need for the microcontroller to remain active even when in a low-power state.
Receiving in Deep Sleep Mode
When receiving data in deep sleep mode, the power consumption decreased to 88 milliamps. This decrease in power usage compared to transmitting further demonstrates the energy efficiency of receiving data over transmitting.
Overall Efficiency
While the ESP32 S3 performs well in terms of functionality and features, its power consumption in deep sleep mode, at 4 milliamps, is relatively high. This can be attributed to the additional components present on a development board compared to just the ESP32 chip itself.
Programming with the Nano ESP32
When it comes to programming the ESP32 S3, the Nano ESP32 is one option that offers Arduino IDE support. This compatibility allows developers to leverage the familiar Arduino environment to facilitate the programming process.
The ESP32 S3 offers a wide range of features and capabilities. However, it is essential to consider its power consumption, especially in deep sleep mode. By utilizing the low-power co-processors and optimizing the usage of the microcontroller, developers can make the most of its capabilities while ensuring efficient and effective power usage.
Exploring Different Methods of Programming Arduino esp32 Boards
The Arduino Webint Editor
The Arduino webint editor is essentially an online version of the Arduino IDE. It allows you to write, compile, and download sketches to the Arduino esp32 board directly through your browser using a plugin. This method offers the convenience of programming without needing to install any software and being able to access your sketches from anywhere with an internet connection.
The Arduino iot Cloud
Currently not available for the Arduino esp32 board, the Arduino iot Cloud will be introduced from August. This platform offers online code writing, deployment, and result visualization all in one place. It provides a seamless experience for IoT projects, where you can easily monitor and control your devices remotely. The Arduino iot Cloud could be a powerful tool once it becomes available and may be worth considering for future projects.
A Quick Demo Setup
Now, let’s set up a quick demo using the Arduino IDE. Recently, I was facing some issues with my fridge where it was freezing some food but not others. To tackle this problem, I decided to set up an experiment using an Arduino Nano esp32 board and a thermocouple attached to a Max 6675 thermocouple amplifier breakout board.
The Setup
To begin, I wired up the Arduino Nano esp32 and the thermocouple amplifier breakout board using the SPI communication protocol. Then, I wrote a simple sketch that connects the Nano to a Wi-Fi network and reads the temperature from the thermocouple. The temperature data is then sent to a local mqtt server.
Utilizing the MQTT Server
The mqtt server serves as a receiver for the temperature data transmitted by the Arduino Nano esp32. In a previous video, I explained how to set up an mqtt server, and you can find the link in the cards above. By utilizing the mqtt server, you can easily monitor the temperature readings received from the Arduino esp32 board.
The Arduino esp32 boards now offer additional programming methods through the Arduino webint editor and the upcoming Arduino iot Cloud. While the webint editor provides convenience and accessibility, the iot Cloud shows promise for future IoT projects. Whether you choose to experiment with these new options or stick with the traditional Arduino IDE, the Arduino esp32 boards continue to offer a wide range of possibilities for makers and developers alike.
A Node-Red Flow for Monitoring Fridge Temperatures
Node-Red is a powerful tool that allows you to create flows for data manipulation and automation. In this article, we will explore how a Node-Red flow can be used to monitor fridge temperatures and display them on a Grafana dashboard.
Monitoring with InfluxDB and Grafana
Once the data is collected from the fridge, it is sent to an InfluxDB database. InfluxDB is a time-series database that is perfect for storing and querying data like temperature measurements. From there, the data can be visualized using Grafana, a popular open-source platform for analytics and monitoring. With Grafana, you can create customized dashboards to display the temperature data in a clear and visually appealing way.
Insights and s
After setting up the Node-Red flow and viewing the data on the Grafana dashboard, you can draw some interesting insights about the fridge’s temperature patterns. It becomes evident that certain parts of the fridge are too cold, while others are too warm. This information can be crucial in identifying any malfunctions or inefficiencies in the fridge’s cooling system.
Comparing the Arduino Nano and the ESP32 S3
Let’s take a moment to compare the Arduino Nano with the ESP32 S3. In terms of features, the Arduino Nano offers some compelling advantages. The USBC connector, for example, is a significant upgrade over the micro USB found in previous Arduino Nanos. Additionally, the ESP32 S3 provides a notable boost in performance compared to other Arduino boards, particularly those based on the 80 Mega platform.
However, when considering the price, it’s important to note that the Arduino Nano is quite steep at 18 Euros. If you browse through online marketplaces like AliExpress, you’ll find similar boards for a fraction of the price. While these alternatives may lack the build quality and reliability of Arduino boards, the Nano form factor might be a determining factor for some. Ultimately, the decision of whether the Nano ESP32 is worth the price lies with the individual.
Expanding the Nano ESP32’s Features
Although the Nano ESP32 is a good starting point for connectivity, there is room for improvement in terms of additional features. For instance, taking inspiration from the RP2040 Connect, the Nano ESP32 could benefit from the inclusion of more extra features. By adding these features, the board would become a more compelling option for users.
Utilizing a Node-Red flow, InfluxDB, and Grafana, you can effectively monitor fridge temperatures and gain valuable insights. While the Arduino Nano ESP32 has its advantages, it’s essential to consider the price and weigh it against alternative options. With the addition of more features, the Nano ESP32 could become an even more enticing choice for users seeking a comprehensive solution for IoT projects.
Arduino Nano ESP32: A Cost-Effective Alternative with Great Performance
High Performance at a Fraction of the Price
The Arduino Nano ESP32 is a versatile microcontroller board that combines the power of the ESP32 chip with the reliability and convenience of the Arduino ecosystem. Despite its modest price tag, the Nano ESP32 boasts impressive performance capabilities. It features a dual-core Tensilica processor running at 240 MHz, making it capable of handling complex tasks with ease. Whether you are developing a robotics project or implementing IoT solutions, the Arduino Nano ESP32 can deliver the performance you need.
Compatibility with Arduino IDE
One of the major advantages of the Arduino Nano ESP32 is its compatibility with the Arduino IDE. This means that you can write and upload code to the board using the familiar Arduino programming language. The Arduino IDE provides an intuitive platform for beginners and experienced developers alike, making it easier to get started with your projects. With the Nano ESP32, you won’t have to spend time learning a new programming language or IDE, saving you valuable time and effort.
Affordability for Every Maker
While the Raspberry Pi Pico offers excellent performance, its price may be a deterrent for some makers on a tight budget. The Arduino Nano ESP32, on the other hand, is a cost-effective alternative that doesn’t compromise on quality. With its lower price point, the Nano ESP32 enables more people to access the world of microcontroller programming and electronics. Whether you are a student, hobbyist, or professional, the Nano ESP32 provides an attractive option that won’t break the bank.
Community and Support
The Arduino community is vast and well-established, with an abundance of resources and support available. If you encounter any issues or have questions about the Arduino Nano ESP32, you can find help through online forums, tutorials, and communities dedicated to Arduino. The strong community backing ensures that you can easily find answers to your queries and even benefit from the shared knowledge of other Arduino enthusiasts.
The Arduino Nano esp32 offers a powerful microcontroller board with built-in WiFi and Bluetooth capabilities. This makes it an ideal choice for IoT projects and wireless communication applications. With an extensive range of libraries and examples available, programming the board is straightforward, even for beginners.
By exploring the various boards in the Arduino Nano family lineup, we can see the progression of features and advancements over time. The Nano esp32 stands out as a versatile option due to its wireless capabilities and seamless integration with the Arduino IDE.
If you’re looking to enhance your projects and delve into the world of embedded systems, the Arduino Nano esp32 is definitely worth considering. Its capabilities, ease of use, and affordability make it a compelling choice for both beginners and experienced makers alike.
The Arduino Nano ESP32 is a versatile and feature-packed board that offers the convenience and power of Arduino in a compact form factor. With its compatibility with existing Nano projects and the addition of a USB-C connector, it brings a refreshing update to the Nano lineup. Whether you’re a seasoned electronics enthusiast or a beginner in the field, this board is worth considering for your next project.
The presence of LED indicators adds functionality and convenience to this board. The external flash storage allows for ample storage space, while the powerful esp32 S3 chip ensures efficient processing and wireless connectivity. With its impressive features and capabilities, this board presents a valuable tool for various applications requiring microcontroller-based systems. Whether you are a hobbyist or a professional, this board can be a valuable addition to your project toolkit.
When considering your next development board, don’t overlook the Arduino Nano ESP32. With its impressive performance, compatibility with the Arduino IDE, affordability, and strong community support, this microcontroller board offers a compelling alternative to the Raspberry Pi Pico. Whether you are a beginner or an experienced developer, the Arduino Nano ESP32 provides a cost-effective, high-performance solution for all your project needs. So, why not give it a try? You might be pleasantly surprised by the possibilities it unlocks.