Exploring the ESP32 from Udemy

What's inside

Learning objectives

Esp32
Internet of things

Home automation

Esp32
Internet of things
Home automation

Syllabus

Getting started with the ESP32

This video talks about

The learning outcomes
The course prerequisites
The target audience
The steps to be followed for a better learning experience

This video gives an overview of the ESP32 microcontroller. It also discusses about the key features and its comparison to the ESP8266.

This video gives an introduction about the Sparkfun ESP32 Thing development board and its onboard features.

This video teaches how to install the Arduino core on the Arduino IDE and blinking the On-Board LED on the Thing

This video explains about reading the sensor values from the On-Board temperature, Hall Effect and the Touch sensitive GPIOs on the Thing.

This video explains about Bluetooth and Bluetooth Low Energy and gives a comparison between the same. It also discusses about Wi-Fi and its comparison to Bluetooth.

This video explains about establishing the Thing as a BLE Server. It also discusses about reading data from and writing data to the client device.

This video explains about establishing BLE connection between two ESP32 Things, one set as Server and the other set as Client.

This video discusses about connecting the Thing to a Wi-Fi network and controlling the On-Board LED on the Thing via the web.

This video discusses about RSSI and why it is useful. It also discusses about how to read the RSSI values from the Access point to which the Thing is connected to.

This video discusses about MQTT, its working, and how it compares to HTTP.

This video explains about adding the Thing to Cayenne using the Cayenne MQTT API. It also discusses on how to write data to a channel on the Cayenne dashboard.

This video explains about setting your own MQTT message publishing rate and creating a custom widget.

This video discusses about creating an actuator Widget and actuate the On-Board LED. It also discusses about creating and using a Trigger.

This video discusses about creating a display widget and use the notification Trigger. It also discusses about scheduling an Event

This video explains about what a PIR sensor is and how it works. It also discusses about interfacing the PIR sensors with the Thing and detecting motion.

This video explains about what a Relay is and how it works. It also discusses about interfacing the Relay module with the Thing to control two bulbs

This video explains about how to control the Relay setup from the Cayenne dashboard and creating a new project on Cayenne.

This video explains about how to setup triggers for the two PIR sensors to actuate the bulbs. It also discusses about correcting the PIR sensor's series of 1's problem.

This video explains about what IFTTT is and how it works. It discusses about Webhooks and how it can be used in Cayenne.

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Read about what's good

what should give you pause

and possible dealbreakers

Tailored for engineers prototyping with IOT development boards and hobbyists entering the Internet of Things, giving importance to both projects and concepts

Explores the Cayenne IOT Platform, which allows learners to create custom dashboards and control devices remotely

Teaches how to connect the ESP32 Thing to a Wi-Fi network and control the on-board LED via the web, a core skill for IoT projects

Explores Bluetooth Low Energy (BLE) communication between two ESP32 Things, which is useful for creating low-power wireless applications

Uses the Arduino IDE, a popular and widely-used platform for programming microcontrollers, making it easier for learners to get started

Uses the Sparkfun ESP32 Thing development board, which may require learners to purchase additional hardware to complete the course

Reviews summary

Practical esp32 iot introduction

According to learners, this course provides a solid introduction to the ESP32 microcontroller, focusing on practical applications and the Internet of Things. Students particularly appreciate the hands-on projects, such as the Smart Hallway example, which help solidify understanding of concepts like MQTT and wireless communication (Wi-Fi, BLE). The course is often described as well-structured and having high production quality with helpful visuals. While many find it suitable for beginners, some more experienced users may find the pace slow or note that it uses specific hardware (Sparkfun ESP32 Thing) and platforms (Cayenne), which might require adjustments if using different components or services.

Pace is debated; lacks advanced depth.

"Could use more in-depth coverage on complex topics or optimization techniques once the basics are covered."

"For me, the pace felt a bit slow at times, especially in the introductory sections."

"It's a good intro, but doesn't go deep into multi-threading or advanced power management."

"The pace was just right for me as a beginner, but I can see how it might be too slow for others."

Focus on Sparkfun Thing and Cayenne has pros & cons.

"Following along exactly requires the specific Sparkfun ESP32 Thing, which wasn't ideal for my different board."

"While Cayenne was useful, I would have preferred a more generic MQTT broker example."

"I had to adapt the code slightly for my non-Sparkfun ESP32 board, but it was manageable."

"Using Cayenne was convenient for setting up the dashboard quickly, even if I might use other platforms later."

Often cited as good for newcomers.

"This course is definitely suitable for beginners who have some basic programming knowledge."

"I had no prior experience with ESP32, and this course guided me well through the initial steps."

"Explains complex topics in a way that someone new to microcontrollers can grasp."

"A great course for getting started with ESP32 if you're a hobbyist."

Visuals and structure are well-received.

"The illustrations and animations were top-notch and really helped visualize the concepts."

"Videos are clear and well-produced, making the learning experience smooth."

"The course structure is logical and builds up knowledge effectively from basics to projects."

"Visually appealing and professionally put together."

Provides a clear entry point into ESP32 & IoT.

"This course was a perfect starting point for me to understand the ESP32 and its capabilities for IoT."

"It gave me a solid foundation in using the ESP32 with Wi-Fi and BLE for basic IoT setups."

"Really helped solidify my understanding of the asynchronous nature and core principles of ESP32 for IoT."

"As a beginner in this area, I found the introduction comprehensive and easy to follow."

Engaging hands-on projects are a highlight.

"The hands-on coding and projects are the strongest part of the course for me, making theory practical."

"I really enjoyed building the smart hallway project; it helped tie everything together effectively."

"The practical examples provided made it easy to see how to apply the concepts learned."

"Building actual projects with the ESP32 was incredibly rewarding and boosted my confidence."

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Exploring the ESP32 with these activities:

Review Basic Electronics Concepts

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Reinforce foundational electronics knowledge to better understand the ESP32's hardware components and circuit design.

Browse courses on Ohm's Law

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Review online resources covering basic electronics principles.
Solve practice problems related to circuit analysis.
Identify key electronic components and their functions.

Brush Up on C/C++ Programming

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Strengthen C/C++ programming skills, essential for coding the ESP32 using the Arduino IDE.

Browse courses on C++

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Review C/C++ syntax and data structures.
Practice writing simple programs using the Arduino IDE.
Familiarize yourself with common Arduino libraries.

Read 'Programming the ESP32 with Arduino'

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Supplement course material with a dedicated book on ESP32 programming using the Arduino IDE.

View Putting Knowledge to Work on Amazon

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Read the book chapter by chapter, following along with the examples.
Experiment with the code snippets provided in the book.
Try to adapt the examples to your own projects.

Four other activities

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Practice Blinking LEDs with Different Delays

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Reinforce basic output control by experimenting with different LED blinking patterns.

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Write code to blink an LED on the ESP32.
Modify the code to change the blinking frequency.
Experiment with different delay values to observe the effect.

Document Your ESP32 Project

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Solidify understanding by documenting a project, explaining the code, hardware setup, and functionality.

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Choose a simple ESP32 project to document.
Write a detailed explanation of the project's purpose and functionality.
Create diagrams illustrating the hardware connections.
Document the code, explaining each section and its purpose.

Build a Simple IoT Sensor Node

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Apply learned concepts by building a practical IoT project that collects and transmits sensor data.

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Select a sensor (e.g., temperature, humidity) to interface with the ESP32.
Write code to read data from the sensor.
Connect the ESP32 to a Wi-Fi network.
Transmit the sensor data to a cloud platform (e.g., Cayenne, ThingSpeak).

Explore 'ESP32 Technical Reference Manual'

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Deepen understanding of the ESP32's inner workings by consulting the official technical reference manual.

View Putting Knowledge to Work on Amazon

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Download the ESP32 Technical Reference Manual from Espressif's website.
Browse the manual to understand the ESP32's architecture and peripherals.
Refer to the manual when troubleshooting or optimizing code.

Career center

Learners who complete Exploring the ESP32 will develop knowledge and skills that may be useful to these careers:

Internet of Things Developer

An Internet of Things Developer creates applications and systems that connect physical devices to the internet. They often work with sensors, microcontrollers, and cloud platforms. A course like this, focused on the ESP32 microcontroller and Internet of Things, directly enhances your ability to develop Internet of Things applications. The course covers crucial aspects such as wireless communication, how to send data to the cloud, and how to control devices remotely which are the core technical skills required of an Internet of Things Developer. The course's curriculum offers hands-on experience with the Cayenne IOT Platform, which is a key tool for this role.

See salaries and explore the career path for Internet of Things Developer

Embedded Systems Engineer

An Embedded Systems Engineer designs, develops, and tests software and hardware for embedded systems. These systems are often found in devices where computing is integrated directly into a product. This course, with its focus on the ESP32, a popular microcontroller, directly helps build a foundation for working with embedded devices. You will learn how to interface with sensors, manage wireless communication protocols such as Bluetooth and Wi-Fi, and control actuators, which are all crucial tasks in the work of an Embedded Systems Engineer. The course includes hands-on projects, which helps develop the skills needed to prototype and test embedded systems.

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Home Automation Specialist

A Home Automation Specialist designs, installs, and maintains automated systems for residential buildings. This course, which explores the ESP32 microcontroller and its applications in home automation, is very helpful in building this career. The course provides hands-on experience with wireless communication, sensor integration, and actuator control, all of which are important aspects of automating a home environment. The course's final project, the Smart Hallway, provides direct and relevant experience to a Home Automation Specialist, and is highly recommended for this role.

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Firmware Engineer

A Firmware Engineer develops low-level software which runs on hardware devices such as embedded systems, microcontrollers, and sensors . This course, with its focus on the ESP32 microcontroller, directly helps build expertise in this field. The course teaches you how to program the ESP32, interface with sensors, manage wireless protocols such as Bluetooth and Wi-Fi, and work with actuators. The hands-on projects and the ability to work with an industry-standard microcontroller make this course useful for anyone aiming for this career.

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Automation Engineer

An Automation Engineer designs and implements automated systems for a wide variety of applications. Some of these include manufacturing processes or building management. This course, by introducing the ESP32 microcontroller and its capabilities for sensing and actuation, helps build skills needed for that role. The course covers wireless communication including Bluetooth and Wi-Fi, how to read sensor data, and how to control actuators, which are all critical in designing automated systems. Moreover, the course provides experience with home automation, further cementing the skills an Automation Engineer needs.

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Control Systems Engineer

A Control Systems Engineer designs and implements systems that control the behavior of other systems, commonly used in industrial automation and robotics. This course, with its focus on the ESP32 and its interaction with sensors and actuators, provides a foundation in the kinds of technologies used by Control Systems Engineers. The course delves into topics such as wireless communication, data acquisition, and remote control of devices, which are all key components of control systems. This makes this course particularly suitable for anyone wanting this career path.

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Electronics Technician

An Electronics Technician builds, tests, and repairs electronic equipment. This course, by exploring the ESP32 microcontroller, helps you understand how electronic systems function. It also provides hands-on experience with circuits, sensors, and wireless communication protocols. While an Electronics Technician works with a broader range of components and systems, the skills gained here will give you a deeper understanding of embedded electronics, making this course very helpful.

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Hardware Engineer

A Hardware Engineer designs, develops, and tests physical components and systems. This course, which focuses on the ESP32 and its applications, is valuable because it builds hands-on skills in working with microcontrollers. This includes working with sensors, wireless technology, and actuators. While a Hardware Engineer's responsibilities extend beyond microcontrollers, skills gained here may help in prototyping and testing new hardware designs. Learning about the ESP32 and its peripherals sets a firm foundation for a hardware engineer.

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Robotics Engineer

A Robotics Engineer designs, builds, and tests robots and robotic systems. While this course does not focus specifically on robotics, the skills of working with microcontrollers, sensors, and actuators learned here will assist this career. Also, learning about sending data wirelessly, and controlling components remotely are important skills for a Robotics Engineer. By exploring the ESP32, you will help build your foundation in embedded systems which are the cornerstone for building robots. This course may be a stepping stone for this particular career pathway.

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IoT Solutions Architect

An Internet of Things Solutions Architect designs complex IoT systems, choosing appropriate hardware, software, and cloud platforms. A course like this, focused on the ESP32 and its integration with the Cayenne IOT Platform, may help build some of the fundamental knowledge required for this role. By exploring the ESP32 and working with various IOT projects, you may gain a better understanding of the overall system architecture. This course may be useful to aspiring Solutions Architects.

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Software Developer

A Software Developer writes the code that runs applications and systems across a huge variety of platforms. While this course focuses on the ESP32 microcontroller, the programming skills and the experience with sensors, data, and control are all beneficial to a Software Developer. In particular, having direct exposure to embedded programming and systems may help some developers stand out. While this course does not focus on the software typically written by a Software Developer, the fundamental skills learned here are helpful.

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Research Engineer

A Research Engineer conducts research and development for new technologies. This course, while not strictly research-focused, can help build skills in prototyping and testing new ideas. By learning about the ESP32 and its capabilities, you can develop proof-of-concept prototypes and investigate systems. A Research Engineer often works with advanced technology, and this course may be useful in this capacity.

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Product Developer

A Product Developer is involved in the entire process of creating a new product, from initial idea to final production. This course, which focuses on the ESP32 and its applications, may help with creating prototypes and testing product concepts. The course may also help you build a better understanding of embedded systems and how they can be integrated into products, as well as understand how the Internet of Things can be useful. This course may be beneficial for this role.

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Data Scientist

A Data Scientist analyzes complex data sets to extract insights and inform decision-making. While this course does not focus on data science directly, the ability to work with sensor data and wireless data streams may be useful. This is especially true if you wish to specialize in the field of Internet of Things, where data must be parsed, analyzed, and stored. This course may introduce you to many of the important challenges faced by a Data Scientist. This course may be a good starting point, but a Data Scientist typically requires an advanced degree.

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Network Engineer

A Network Engineer is responsible for the design, implementation, and maintenance of computer networks. Though this course focuses on microcontrollers and embedded systems, the experience gained with wireless communication protocols such as Wi-Fi and Bluetooth could be beneficial. The course may also help you to develop an understanding of how devices connect to networks and communicate with each other, which is a fundamental aspect of networking. This course may be a useful, if niche, introduction to networking concepts.

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Exploring the ESP32

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Reviews summary

Practical esp32 iot introduction

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