Book: Mastering the Arduino Uno R4
Based on the low-cost 8-bit ATmega328P processor, the Arduino Uno R3 board is likely to score as the most popular Arduino family member, and this workhorse has been with us for many years. Eleven years later, the long-overdue successor, the Arduino Uno R4, was released. It is built around a 48 MHz, 32-bit Arm Cortex-M4 microcontroller and provides significantly expanded SRAM and Flash memory. Additionally, a higher-precision ADC and a new DAC are added to the design. The Uno R4 board also supports the CAN Bus with an interface.
Two versions of the board are available: Uno R4 Minima, and Uno R4 WiFi. This book is about using these new boards to develop many different and interesting projects with just a handful of parts and external modules. All projects described in the book have been fully tested on the Uno R4 Minima or the Uno R4 WiFi board, as appropriate.
The project topics include the reading, control, and driving of many components and modules in the kit as well as on the relevant Uno R4 board, including
LEDs
7-segment displays (using timer interrupts)
LCDs
Sensors
RFID Reader
4x4 Keypad
Real-time clock (RTC)
Joystick
8×8 LED matrix
Motors
DAC (Digital-to-analog converter)
LED matrix
WiFi connectivity
Serial UART
CAN bus
Infrared controller and receiver
Simulators
… all in creative and educational ways with the project operation and associated software explained in great detail.
Arduino Uno R4 WiFi
The Arduino Uno R4 is powered by the Renesas RA4M1 32-bit ARM Cortex-M4 processor, providing a significant boost in processing power, memory, and functionality. The WiFi version comes with an ESP32-S3 WiFi module in addition to the RA4M1, expanding creative opportunities for makers and engineers.
The Arduino Uno R4 runs at 48 MHz, which provides a 3x increase over the popular Uno R3. Additionally, SRAM has been upgraded from 2 kB to 32 kB, and flash memory from 32 kB to 256 kB to support more complex projects. Responding to community feedback, the USB port is now USB-C, and the maximum power supply voltage has been raised to 24 V with an enhanced thermal design. The board includes a CAN bus and an SPI port, enabling users to reduce wiring and perform parallel tasks by connecting multiple shields. A 12-bit analog DAC is also provided on the board.
Specifications
Microcontroller
Renesas RA4M1 (ARM Cortex-M4)
USB
USB-C
Programming Port
Pins
Digital I/O Pins
14
Pins
Analog input pins
6
DAC
1
RTC
1
PWM pins
6
Communication
UART
1x
I²C
1x
SPI
1x
Qwiic I²C connector
1x
CAN
1x CAN Bus
Power
Circuit operating voltage
5 V
Input voltage (VIN)
6-24 V
DC Current per I/O Pin
8 mA
Clock speed
Main core
48 MHz
Memory
RA4M1
256 kB Flash, 32 kB RAM
LED Matrix
12 x 8 (96 red LEDs)
Dimensions
68.9 x 53.4 mm
Downloads
Datasheet
Schematics
This bundle contains:
Book: Mastering the Arduino Uno R4 (normal price: €40)
Arduino Uno R4 WiFi (normal price: €30)
The Elektor MultiCalculator Kit is an Arduino-based multifunction calculator that goes beyond basic calculations. It offers 22 functions including light and temperature measurement, differential temperature analysis, and NEC IR remote control decoding. The Elektor MultiCalculator is a handy tool for use in your projects or for educational purposes.
The kit features a Pro Mini module as the computing unit. The PCB is easy to assemble using through-hole components. The enclosure consists of 11 acrylic panels and mounting materials for easy assembly. Additionally, the device is equipped with a 16x2 alphanumeric LCD, 20 buttons, and temperature sensors.
The Elektor MultiCalculator is programmable with the Arduino IDE through a 6-way PCB header. The available software is bilingual (English and Dutch). The calculator can be programmed with a programming adapter, and it is powered through USB-C.
Modes of Operation
Calculator
4-Ring Resistor Code
5-Ring Resistor Code
Decimal to Hexadecimal and Character (ASCII) conversion
Hexadecimal to Decimal and Character (ASCII) conversion
Decimal to Binary and Character (ASCII) conversion
Binary to Decimal and Hexadecimal conversion
Hz, nF, capacitive reactance (XC) calculation
Hz, µH, inductive reactance (XL) calculation
Resistance calculation of two resistors connected in parallel
Resistance calculation of two resistors connected in series
Calculation of unknown parallel resistor
Temperature measurement
Differential temperature measurement T1&T2 and Delta (δ)
Light measurement
Stopwatch with lap time function
Item counter
NEC IR remote control decoding
AWG conversion (American Wire Gauge)
Rolling Dice
Personalize startup message
Temperature calibration
Specifications
Menu languages: English, Dutch
Dimensions: 92 x 138 x 40 mm
Build time: approx. 5 hours
Included
PCB and though-hole components
Precut acrylic sheets with all mechanical parts
Pro Mini microcontroller module (ATmega328/5 V/16 MHz)
Programming adapter
Waterproof temperature sensors
USB-C cable
Downloads
Software
This USB Stick contains more than 300 Arduino-related articles published in Elektor Magazine. The content includes both background articles and projects on the following topics:
Software & hardware development: Tutorials on Arduino software development using Arduino IDE, Atmel Studio, Shields, and essential programming concepts.
Learning: The Microcontroller Bootcamp offers a structured approach to programming embedded systems.
Data acquisition & measurement: Projects such as a 16-bit data logger, lathe tachometer, and an AC grid analyzer for capturing and analyzing real-time signals.
Wireless communication: Learn how to implement wireless networks, create an Android interface, and communicate effectively with microcontrollers.
Robotics and automation: This covers the Arduino Nano Robot Controller, supporting boards for automation, and explores various Arduino shields to enhance functionality.
Self-build projects: Unique projects such as laser projection, Numitron clock and thermometer, ELF receiver, Theremino, and touch LED interfaces highlight creative applications.
Whether you're a beginner or an experienced maker, this collection is a valuable resource for learning, experimenting, and pushing the boundaries of Arduino technology.
Programming and Projects for the Minima and WiFi
Based on the low-cost 8-bit ATmega328P processor, the Arduino Uno R3 board is likely to score as the most popular Arduino family member, and this workhorse has been with us for many years. Eleven years later, the long-overdue successor, the Arduino Uno R4, was released. It is built around a 48 MHz, 32-bit Arm Cortex-M4 microcontroller and provides significantly expanded SRAM and Flash memory. Additionally, a higher-precision ADC and a new DAC are added to the design. The Uno R4 board also supports the CAN Bus with an interface.
Two versions of the board are available: Uno R4 Minima, and Uno R4 WiFi. This book is about using these new boards to develop many different and interesting projects with just a handful of parts and external modules. All projects described in the book have been fully tested on the Uno R4 Minima or the Uno R4 WiFi board, as appropriate.
The project topics include the reading, control, and driving of many components and modules in the kit as well as on the relevant Uno R4 board, including
LEDs
7-segment displays (using timer interrupts)
LCDs
Sensors
RFID Reader
4x4 Keypad
Real-time clock (RTC)
Joystick
8×8 LED matrix
Motors
DAC (Digital-to-analog converter)
LED matrix
WiFi connectivity
Serial UART
CAN bus
Infrared controller and receiver
Simulators
… all in creative and educational ways with the project operation and associated software explained in great detail.
An 8-in-1 test & measurement instrument for the electronics workbench
A well-equipped electronics lab is crammed with power supplies, measuring devices, test equipment and signal generators. Wouldn‘t it be better to have one compact device for almost all tasks? Based on the Arduino, a PC interface is to be developed that’s as versatile as possible for measurement and control. It simply hangs on a USB cable and – depending on the software – forms the measuring head of a digital voltmeter or PC oscilloscope, a signal generator, an adjustable voltage source, a frequency counter, an ohmmeter, a capacitance meter, a characteristic curve recorder, and much more.
The circuits and methods collected here are not only relevant for exactly these tasks in the "MSR" electronics lab, but many details can also be used within completely different contexts.
Errata/Updates
In the programs printed, all instances of “be()” should read: sei().
Learn the basics of electronics by assembling manually your Arduino Uno, become familiar with soldering by mounting every single component, and then unleash your creativity with the only kit that becomes a synth!
The Arduino Make-Your-Uno kit is really the best way to learn how to solder. And when you are done, the packaging allows you to build a synth and make your music.
A kit with all the components to build your very own Arduino Uno and audio synthesizer shield.
The Make-Your-Uno kit comes with a complete set of instructions in a dedicated content platform. This includes video material, a 3D interactive viewer for following detailed instructions, and how to program your board once it is finished.
This kit contains:
Arduino Make-Your-Uno
1x Make-Your-Uno PCB
1x USB C Serial adapter Board
7x Resistors 1k Ohm
2x Resistors 10k Ohm
2x Resistors 1M Ohm
1x Diode (1N4007)
1x 16 MHz Crystal
4x Yellow LEDs
1x Green LED
1x Push-Button
1x MOSFET
1x LDO (3.3 V)
1x LDO (5 V)
3x Ceramic capacitors (22pF)
3x Electrolytic capacitors (47uF)
7x Polyester capacitors (100nF)
1x Socket for ATMega 328p
2x I/O Connectors
1x Connector header 6 pins
1x Barrel jack connector
1x ATmega 328p Microcontroller
Arduino Audio Synth
1x Audio Synth PCB
1x Resistor 100k Ohm
1x Resistor 10 Ohm
1x Audio amplifier (LM386)
1x Ceramic capacitors (47nF)
1x Electrolytic capacitors (47uF)
1x Electrolytic capacitors (220uF)
1x Polyester capacitor (100nF)
4x connectors pin header
6x potentiometer 10k Ohm with plastic knobs
Spare parts
2x Electrolytic capacitors (47uF)
2x Polyester capacitor (100nF)
2x Ceramic capacitors (22pF)
1x Push-Button
1x Yellow LEDs
1x Green LED
Mechanical parts
5x Spacers 12 mm
11x Spacers 6 mm
5x screw nuts
2x screws 12 mm
Example projects with Node-RED, MQTT, WinCC SCADA, Blynk, and ThingSpeak
This comprehensive guide unlocks the power of Modbus TCP/IP communication with Arduino. From the basics of the Modbus protocol right up to full implementation in Arduino projects, the book walks you through the complete process with lucid explanations and practical examples.
Learn how to set up Modbus TCP/IP communication with Arduino for seamless data exchange between devices over a network. Explore different Modbus functions and master reading and writing registers to control your devices remotely. Create Modbus client and server applications to integrate into your Arduino projects, boosting their connectivity and automation level.
With detailed code snippets and illustrations, this guide is perfect for beginners and experienced Arduino enthusiasts alike. Whether you‘re a hobbyist looking to expand your skills or a professional seeking to implement Modbus TCP/IP communication in your projects, this book provides all the knowledge you need to harness the full potential of Modbus with Arduino.
Projects covered in the book:
TCP/IP communication between two Arduino Uno boards
Modbus TCP/IP communication within the Node-RED environment
Combining Arduino, Node-RED, and Blynk IoT cloud
Interfacing Modbus TCP/IP with WinCC SCADA to control sensors
Using MQTT protocol with Ethernet/ESP8266
Connecting to ThingSpeak IoT cloud using Ethernet/ESP8266
Practical Multitasking Fundamentals
Programming embedded systems is difficult because of resource constraints and limited debugging facilities. Why develop your own Real-Time Operating System (RTOS) as well as your application when the proven FreeRTOS software is freely available? Why not start with a validated foundation?
Every software developer knows that you must divide a difficult problem into smaller ones to conquer it. Using separate preemptive tasks and FreeRTOS communication mechanisms, a clean separation of functions is achieved within the entire application. This results in safe and maintainable designs.
Practicing engineers and students alike can use this book and the ESP32 Arduino environment to wade into FreeRTOS concepts at a comfortable pace. The well-organized text enables you to master each concept before starting the next chapter. Practical breadboard experiments and schematics are included to bring the lessons home. Experience is the best teacher.
Each chapter includes exercises to test your knowledge. The coverage of the FreeRTOS Application Programming Interface (API) is complete for the ESP32 Arduino environment. You can apply what you learn to other FreeRTOS environments, including Espressif’s ESP-IDF. The source code is available from GitHub. All of these resources put you in the driver’s seat when it is time to develop your next uber-cool ESP32 project.
What you will learn:
How preemptive scheduling works within FreeRTOS
The Arduino startup “loopTask”
Message queues
FreeRTOS timers and the IDLE task
The semaphore, mutex, and their differences
The mailbox and its application
Real-time task priorities and its effect
Interrupt interaction and use with FreeRTOS
Queue sets
Notifying tasks with events
Event groups
Critical sections
Task local storage
The gatekeeper task
The Arduino Pro Portenta Vision Shield brings industry-rated features to your Portenta. This hardware add-on will let you run embedded computer vision applications, connect wirelessly or via Ethernet to the Arduino Cloud or your own infrastructure, and activate your system upon the detection of sound events.
Features
324x324 pixels camera sensor: use one of the cores in Portenta to run image recognition algorithms using the OpenMV for Arduino editor
100 Mbps Ethernet connector: get your Portenta H7 connected to the wired Internet
2 onboard microphones for directional sound detection: capture and analyse sound in real-time
JTAG connector: perform low-level debugging of your Portenta board or special firmware updates using an external programmer
SD-Card connector: store your captured data in the card, or read configuration files
The Vision Shield has been designed to fit on top of the Arduino Portenta family. The Portenta boards feature multicore 32-bit ARM Cortex processors running at hundreds of megahertz, with megabytes of program memory and RAM. Portenta boards come with WiFi and Bluetooth.
Embedded Computer Vision Made Easy
Arduino has teamed up with OpenMV to offer you a free license to the OpenMV IDE, an easy way into computer vision using MicroPython as a programming paradigm. Download the OpenMV for Arduino Editor from our professional tutorials site and browse through the examples we have prepared for you inside the OpenMV IDE. Companies across the whole world are already building their commercial products based on this simple-yet-powerful approach to detect, filter, and classify images, QR codes, and others.
Debugging With Professional Tools
Connect your Portenta H7 to a professional debugger through the JTAG connector. Use professional software tools like the ones from Lauterbach or Segger on top of your board to debug your code step by step. The Vision Shield exposes the required pins for you to plug in your external JTAG.
Camera
Himax HM-01B0 camera module
Resolution
320 x 320 active pixel resolution with support for QVGA
Image sensor
High sensitivity 3.6μ BrightSense pixel technology
Microphone
2 x MP34DT05
Length
66 mm
Width
25 mm
Weight
11 gr
For more information, check out the tutorials provided by Arduino here.
Program and build Arduino-based ham station utilities, tools, and instruments
In addition to a detailed introduction to the exciting world of the Arduino microcontroller and its many variants, this book introduces you to the shields, modules, and components you can connect to the Arduino. Many of these components are discussed in detail and used in the projects included in this book to help you understand how these components can be incorporated into your own Arduino projects. Emphasis has been placed on designing and creating a wide range of amateur radio-related projects that can easily be built in just a few days.
This book is written for ham radio operators and Arduino enthusiasts of all skill levels, and includes discussions about the tools, construction methods, and troubleshooting techniques used in creating amateur radio-related Arduino projects. The book teaches you how to create feature-rich Arduino-based projects, with the goal of helping you to advance beyond this book, and design and build your own ham radio Arduino projects.
In addition, this book describes in detail the design, construction, programming, and operation of the following projects:
CW Beacon and Foxhunt Keyer
Mini Weather Station
RF Probe with LED Bar Graph
DTMF Tone Encoder
DTMF Tone Decoder
Waveform Generator
Auto Power On/Off
Bluetooth CW Keyer
Station Power Monitor
AC Current Monitor
This book assumes a basic knowledge of electronics and circuit construction. Basic knowledge of how to program the Arduino using its IDE will also be beneficial.
This programmer is specifically designed for burning bootloaders (without a computer) on Arduino-compatible ATmega328P/ATmega328PB development boards.
Simply plug the programmer into the ICSP interface to re-burn the bootloader. It’s also compatible with new chips, provided the IC is functional.
Note: Burning a bootloader erases all previous chip data.
Features
Working voltage: 3.1-5.3 V
Working current: 10 mA
Compatible with Arduino Uno R3 based boards (ATmega328P or ATmega328PB)
Dimensions: 39.6 x 15.5 x 7.8 mm