50+ Android Apps with Raspberry Pi, ESP32 and Arduino This book is about developing apps for Android compatible mobile devices using the MIT App Inventor online development environment. MIT App Inventor projects can be in either standalone mode or use an external processor. In standalone mode, the developed application runs only on the mobile device (e.g. Android). In external processor-based applications, the mobile device communicates with an external microcontroller-based processor, such as Raspberry Pi, Arduino, ESP8266, ESP32, etc. In this book, many tested and fully working projects are given both in standalone mode and using an external processor. Full design steps, block programs, circuit diagrams, QR codes and full program listings are given for all projects. The projects developed in this book include: Using the text-to-speech component Intonating a received SMS message Sending SMS messages Making telephone calls using a contacts list Using the GPS and Pin-pointing our location on a map Speech recognition and speech translation to another language Controlling multiple relays by speech commands Projects for the Raspberry Pi, ESP32 and Arduino using Bluetooth and Wi-Fi MIT APP Inventor and Node-RED projects for the Raspberry Pi The book is unique in that it is currently the only book that teaches how to develop projects using Wi-Fi and Node-RED with MIT App Inventor. The book is aimed at students, hobbyists, and anyone interested in developing apps for mobile devices. All projects presented in this book have been developed using the MIT App Inventor visual programming language. There is no need to write any text-based programs. All projects are compatible with Android-based mobile devices. Full program listings for all projects as well as detailed program descriptions are given in the book. Users should be able to use the projects as they are presented, modifying them to suit their own needs.

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The GT-7U GPS module, with its high sensitivity, low power consumption, miniaturization, and its extremely high tracking sensitivity, delivers an extended area of coverage. In an area that the conventional GPS receiver would fail, such as narrow urban sky, dense Jungle environment, GT-7U can achieve high-precision positioning. Its compact size makes it suitable for applications in vehicles, mobile phones, video cameras, and other mobile positioning systems, and it is an excellent choice for GPS applications. Specifications Operating Frequency L1 (1575.42 ±10 MHz) Operating Voltage 3.3 - 5.2 V Operating Current Normal Mode: 50 mA Power-Saving Mode: 30 mA Communication Interface TTL serial port, microUSB interface Serial Port Baud Rate 9600 bps Communication format 8N1 Interface Logic Voltage 3.3 or 5 V External Antenna Inteface IPX Dimensions 2.2 x 2.1 x 0.5 cm Weight 8.5 g

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The project book, written by well-known Elektor author Dogan Ibrahim, holds many software- and hardware-based projects especially developed for the Arduino Uno Experimenting Kit. The kit comes with the Arduino Uno R4 Minima, several LEDs, sensors, actuators, and other components. The purpose of the kit is to make a flying start with hardware and software aspects of projects designed around the Arduino Uno microcontroller system. The projects given in this guide are fully evaluated and working and fully employ all the supplied components. A block diagram, a circuit diagram, an extensive program listing, and a complete program description is given for every project in the guide. Included 1x Arduino Uno R4 Minima 1x RFID reader module 1x DS1302 clock module 1x 5 V stepper motor 1x '2003' stepper motor drive board 5x Green LED 5x Yellow LED 5x Red LED 2x Rocker switch 1x Flame sensor 1x LM35 sensor module 1x Infrared receiver 3x Light-dependent resistors (LDRs) 1x IR remote controller 1x Breadboard 4x Pushbutton (with four caps) 1x Buzzer 1x Piezo sounder 1x Adjustable resistor (potentiometer) 1x 74HC595 shift register 1x 7-segment display 1x 4-digit 7-segment display 1x 8x8 Dot-matrix display 1x 1602 / I²C LCD module 1x DHT11 Temperature and humidity module 1x Relay module 1x Sound module Set of Dupont cables Set of Breadboard cables 1x Water sensor 1x PS2 Joystick 5x 1 k-ohm resistor 5x 10 k-ohm resistor 5x 220-ohm resistor 1x 4x4 keypad module 1x 9g Servo (25 cm) 1x RFID card 1x RGB module 1x 9 V battery DC jack Project book (326 pages) Over 80 Projects in the Book Hardware Projects with LEDs Blinking LED – using the on-board LED Blinking LED – using an external LED LED flashing SOS Alternately blinking LEDs Chaser-LEDs Chasing LEDs 2 Binary counting LEDs Random flashing LEDs – Christmas lights Button controlled LED Controlling the LED flashing rate – external interrupts Reaction timer LED color wand RGB fixed colors Traffic lights Traffic lights with pedestrian crossings Using the 74HC595 shift register – binary up counter Using the 74HC595 shift register – random flashing 8 LEDs Using the 74HC595 shift register – chasing LEDs Using the 74HC595 shift register – turn ON a specified LED Using the 74HC595 shift register – turn ON specified LEDs 7-Segment LED Displays 7-Segment 1-digit LED counter 7-Segment 4-digit multiplexed LED display 7-Segment 4-digit multiplexed LED display counter – timer interrupts 7-Segment 4-digit multiplexed LED display counter – blanking leading zeroes 7-Segment 4-digit multiplexed LED display – reaction timer Timer interrupt blinking onboard LED Liquid Crystal Displays (LCDs) Display text on the LCD Scrolling text on the LCD Display custom characters on the LCD LCD based conveyor belt goods counter LCD based accurate clock using timer interrupts LCD dice Sensors Analog temperature sensor Voltmeter On/Off temperature controller Darkness reminder – using a light-dependent resistor (LDR) Tilt detection Displaying water level Water level controller Water flooding detector with buzzer Sound detection sensor – control the relay by clapping hands Flame sensor – fire detection with relay output Temperature and humidity display Generating musical tones – melody maker The RFID Reader Finding the Tag ID RFID door lock access with relay The 4x4 Keypad Display the pressed key code on the Serial Monitor Integer calculator with LCD Keypad door security lock with relay The Real-Time Clock (RTC) Module RTC with Serial Monitor RTC with LCD Temperature and humidity display with time stamping Setting and displaying the current time Periodic interrupt every 2 seconds The Joystick Reading analog values from the joystick 8x8 LED Matrix Displaying shapes Motors: Servo and Stepper Test-rotate the servo Servo sweep Joystick-controlled servo Rotate the motor clockwise and then anticlockwise The Digital to Analog Converter (DAC) Generating a square wave with 2 V amplitude Generate a sine wave Sine wave sweep frequency generator Generate sine wave whose frequency changes with potentiometer Generate a square wave with frequency of 1 kHz and amplitude of 1 V Using the EEPROM, the Human Interface Device, and PWM Keyboard control to launch Windows programs LED dimming using PWM The Arduino Uno R4 WiFi Using LED matrix 1 – creating a large + shape Creating images by setting bits Using LED matrix 2 – creating a large + shape Animation – displaying a word Controlling the Arduino Uno R4 WiFi on-board LED from a smartphone using UDP Serial Communications Receiving ambient temperature from an Arduino Uno R3 Using an Arduino Uno Simulator A simple project simulation – flashing LED Displaying text on LCD LCD seconds counter The CAN bus Arduino Uno R4 WiFi to Arduino Uno R4 Minima CAN bus communication Sending the temperature readings over the CAN bus Infrared Receiver and Remote Controller Decoding the IR remote control codes Remote relay activation/deactivation Infrared remote stepper motor control

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Get Cracking with the Arduino Nano V3, Nano Every, and Nano 33 IoT The seven chapters in this book serve as the first step for novices and microcontroller enthusiasts wishing to make a head start in Arduino programming. The first chapter introduces the Arduino platform, ecosystem, and existing varieties of Arduino Nano boards. It also teaches how to install various tools needed to get started with Arduino Programming. The second chapter kicks off with electronic circuit building and programming around your Arduino. The third chapter explores various buses and analog inputs. In the fourth chapter, you get acquainted with the concept of pulse width modulation (PWM) and working with unipolar stepper motors. In the fifth chapter, you are sure to learn about creating beautiful graphics and basic but useful animation with the aid of an external display. The sixth chapter introduces the readers to the concept of I/O devices such as sensors and the piezo buzzer, exploring their methods of interfacing and programming with the Arduino Nano. The last chapter explores another member of Arduino Nano family, Arduino Nano 33 IoT with its highly interesting capabilities. This chapter employs and deepens many concepts learned from previous chapters to create interesting applications for the vast world of the Internet of Things. The entire book follows a step-by-step approach to explain concepts and the operation of things. Each concept is invariably followed by a to-the-point circuit diagram and code examples. Next come detailed explanations of the syntax and the logic used. By closely following the concepts, you will become comfortable with circuit building, Arduino programming, the workings of the code examples, and the circuit diagrams presented. The book also has plenty of references to external resources wherever needed. An archive file (.zip) comprising the software examples and Fritzing-style circuit diagrams discussed in the book may be downloaded free of charge below.

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The Arduino Nano RP2040 Connect is an RP2040-based Arduino board equipped with Wi-Fi (802.11b/g/n) and Bluetooth 4.2. Besides wireless connectivity the board comes with a microphone for sound and voice activation and a six-axis smart motion sensor with AI capabilities. An RGB LED is available too. 22 GPIO ports (20 with PWM support and eight analogue inputs) let the user control e.g. relays, motors and LEDs and read switches and other sensors. Program memory is plentiful with 16 MB of flash memory, more than enough room for storing many webpages or other data. Technical Specifications Microcontroller Raspberry Pi RP2040 USB connector Micro USB Pins Built-in LED pins 13 Digital I/O pins 20 Analog Input pins 8 PWM pins 20 (Except A6, A7) External interrupts 20 (Except A6, A7) Connectivity Wi-Fi Nina W102 uBlox module Bluetooth Nina W102 uBlox module Secure element ATECC608A-MAHDA-T Crypto IC Sensors IMU LSM6DSOXTR (6-axis) Microphone MP34DT05 Communication UART Yes I²C Yes SPI Yes Power Circuit operating voltage 3.3 V Input Voltage (VIN) 5-21 V DC Current per I/O pin 4 mA Clock speed Processor 133 MHz Memory AT25SF128A-MHB-T 16 MB Flash IC Nina W102 uBlox module 448 KB ROM, 520 KB SRAM, 16 MB Flash Dimensions 45 x 18 mm Weight 6 g Downloads Schematics Pinout Datasheet

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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. This 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.

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DC brushed motors are the most commonly used and widely available motors in the market. The Cytron 10 Amp 5-30 V DC Motor Driver will help you add functionality to your DC motor. It supports both sign-magnitude PWM signal and locked-antiphase. It is compatible with full solid-state components resulting in higher response time and eliminates the wear and tear of the mechanical relay. Features Supports motor voltage from 5 V to 30 V DC Current up to 13 A continuous and 30 A peak 3.3 V and 5 V logic level input Compatible with Arduino and Raspberry Pi Speed control PWM frequency up to 20 kHz Fully NMOS H-Bridge for better efficiency No heat sink is required Bi-directional control for one Brushed DC motor Regenerative Braking Downloads User Manual Arduino Library

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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.

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Third, extended and revised edition with AVR Playground and Elektor Uno R4 Arduino boards have become hugely successful. They are simple to use and inexpensive. This book will not only familiarize you with the world of Arduino but it will also teach you how to program microcontrollers in general. In this book theory is put into practice on an Arduino board using the Arduino programming environment. Some hardware is developed too: a multi-purpose shield to build some of the experiments from the first 10 chapters on; the AVR Playground, a real Arduino-based microcontroller development board for comfortable application development, and the Elektor Uno R4, an Arduino Uno R3 on steroids. The author, an Elektor Expert, provides the reader with the basic theoretical knowledge necessary to program any microcontroller: inputs and outputs (analog and digital), interrupts, communication busses (RS-232, SPI, I²C, 1-wire, SMBus, etc.), timers, and much more. The programs and sketches presented in the book show how to use various common electronic components: matrix keyboards, displays (LED, alphanumeric and graphic color LCD), motors, sensors (temperature, pressure, humidity, sound, light, and infrared), rotary encoders, piezo buzzers, pushbuttons, relays, etc. This book will be your first book about microcontrollers with a happy ending! This book is for you if you are a beginner in microcontrollers, an Arduino user (hobbyist, tinkerer, artist, etc.) wishing to deepen your knowledge,an Electronics Graduate under Undergraduate student or a teacher looking for ideas. Thanks to Arduino the implementation of the presented concepts is simple and fun. Some of the proposed projects are very original: Money Game Misophone (a musical fork) Car GPS Scrambler Weather Station DCF77 Decoder Illegal Time Transmitter Infrared Remote Manipulator Annoying Sound Generator Italian Horn Alarm Overheating Detector PID Controller Data Logger SVG File Oscilloscope 6-Channel Voltmeter All projects and code examples in this book have been tried and tested on an Arduino Uno board. They should also work with the Arduino Mega and every other compatible board that exposes the Arduino shield extension connectors.Please note:For this book, the author has designed a versatile printed circuit board that can be stacked on an Arduino board. The assembly can be used not only to try out many of the projects presented in this book but also allows for new exercises that in turn provide the opportunity to discover new techniques. Also available is a kit of parts including the PCB and all components. With this kit you can build most of the circuits described in the book and more.Datasheets Active Components Used (.PDF file): ATmega328 (Arduino Uno) ATmega2560 (Arduino Mega 2560) BC547 (bipolar transistor, chapters 7, 8, 9) BD139 (bipolar power transistor, chapter 10) BS170 (N-MOS transistor, chapter 8) DCF77 (receiver module, chapter 9) DS18B20 (temperature sensor, chapter 10) DS18S20 (temperature sensor, chapter 10) HP03S (pressure sensor, chapter 8) IRF630 (N-MOS power transistor, chapter 7) IRF9630 (P-MOS power transistor, chapter 7) LMC6464 (quad op-amp, chapter 7) MLX90614 (infrared sensor, chapter 10) SHT11 (humidity sensor, chapter 8) TS922 (dual op-amp, chapter 9) TSOP34836 (infrared receiver, chapter 9) TSOP1736 (infrared receiver, chapter 9) MPX4115 (analogue pressure sensor, chapter 11) MCCOG21605B6W-SPTLYI (I²C LCD, chapter 12) SST25VF016B (SPI EEPROM, chapter 13) About the author:Clemens Valens, born in the Netherlands, lives in France since 1997. Manager at Elektor Labs and Webmaster of ElektorLabs, in love with electronics, he develops microcontroller systems for fun, and sometimes for his employer too. Polyglot—he is fluent in C, C++, PASCAL, BASIC and several assembler dialects—Clemens spends most of his time on his computer while his wife, their two children and two cats try to attract his attention (only the cats succeed). Visit the author’s website: www.polyvalens.com.Authentic testimony of Hervé M., one of the first readers of the book:'I almost cried with joy when this book made me understand things in only three sentences that seemed previously completely impenetrable.'

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This book details the use of the ARM Cortex-M family of processors and the Arduino Uno in practical CAN bus based projects. Inside, it gives a detailed introduction to the architecture of the Cortex-M family whilst providing examples of popular hardware and software development kits. Using these kits helps to simplify the embedded design cycle considerably and makes it easier to develop, debug, and test a CAN bus based project. The architecture of the highly popular ARM Cortex-M processor STM32F407VGT6 is described at a high level by considering its various modules. In addition, the use of the mikroC Pro for ARM and Arduino Uno CAN bus library of functions are described in detail. This book is written for students, for practising engineers, for hobbyists, and for everyone else who may need to learn more about the CAN bus and its applications. The book assumes that the reader has some knowledge of basic electronics. Knowledge of the C programming language will be useful in later chapters of the book, and familiarity with at least one microcontroller will be an advantage, especially if the reader intends to develop microcontroller based projects using CAN bus. The book should be useful source of reference to anyone interested in finding an answer to one or more of the following questions: What bus systems are available for the automotive industry? What are the principles of the CAN bus? What types of frames (or data packets) are available in a CAN bus system? How can errors be detected in a CAN bus system and how reliable is a CAN bus system? What types of CAN bus controllers are there? What are the advantages of the ARM Cortex-M microcontrollers? How can one create a CAN bus project using an ARM microcontroller? How can one create a CAN bus project using an Arduino microcontroller? How can one monitor data on the CAN bus?

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40+ Projects using Arduino, Raspberry Pi and ESP32 This book is about developing projects using the sensor-modules with Arduino Uno, Raspberry Pi and ESP32 microcontroller development systems. More than 40 different sensors types are used in various projects in the book. The book explains in simple terms and with tested and fully working example projects, how to use the sensors in your project. The projects provided in the book include the following: Changing LED brightness RGB LEDs Creating rainbow colours Magic wand Silent door alarm Dark sensor with relay Secret key Magic light cup Decoding commercial IR handsets Controlling TV channels with IT sensors Target shooting detector Shock time duration measurement Ultrasonic reverse parking Toggle lights by clapping hands Playing melody Measuring magnetic field strength Joystick musical instrument Line tracking Displaying temperature Temperature ON/OFF control Mobile phone-based Wi-Fi projects Mobile phone-based Bluetooth projects Sending data to the Cloud The projects have been organized with increasing levels of difficulty. Readers are encouraged to tackle the projects in the order given. A specially prepared sensor kit is available from Elektor. With the help of this hardware, it should be easy and fun to build the projects in this book.

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You can control the motor driver with PWM and DIR inputs. The Arduino pins for these inputs are configurable via jumpers. If the specified pins on Arduino are already used up by other application/shield, you can select another pin easily with the jumper. There is also a possibility to quickly and conveniently test the functionality of the motor driver with the onboard test buttons and output LEDs. Buck regulator which produces 5 V output is also available to power the Arduino mainboard, which eliminates the need of extra power supply for the Arduino mainboard. The board also offers various protection features. Overcurrent protection prevents the motor driver from damage when the motor stalls or an oversized motor is hooked up. When the motor is trying to draw current more than what the motor driver can support, the motor current will be limited at the maximum threshold. Assisted by temperature protection, the maximum current limiting threshold is determined by the board temperature. The higher the board temperature, the lower the current limiting threshold. As a result, the motor driver delivers its full potential depending on the current conditions without damaging any MOSFETs. Features Shield for Arduino form factor Bidirectional control for two brushed DC motors Control one unipolar/bipolar stepper motor Operating Voltage: DC 7 V to 30 V Maximum Motor Current: 10 A continuous, 30 A peak Buck regulator to produce 5 V output (500 mA max) Buttons for quick testing LEDs for motor output state Selectable Arduino pins for PWM/DIR inputs. PWM/DIR inputs compatible with 1.8 V, 3.3 V and 5 V logic PWM frequency up to 20 kHz (Output frequency is same as input frequency). Overcurrent protection with active current limiting Temperature protection Undervoltage shutdown Possible applications Mobile Robot Automated Guided Vehicle (AGV) Solar Tracker Game Simulator Automation Machine Downloads Datasheet Sample Code 3D CAD Files Packing List 1x 10Amps 7V-30V DC Motor Driver Shield for Arduino (2 Channels) MDD010

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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 Uno R4 Minima is an affordable option for those who don't need the additional features. 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. The Arduino Uno R4 comes in 2 versions (Minima and WiFi) and offers the following new features compared to the Uno R3: Arduino Uno R4 Minima Arduino Uno R4 WiFi USB-C connector USB-C connector RA4M1 from Renesas (Cortex-M4) RA4M1 from Renesas (Cortex-M4) HID device (emulate a mouse or a keyboard) HID device (emulate a mouse or a keyboard) Improved power section (up to 24 V through VIN) Improved power section (up to 24 V through VIN) CAN bus CAN bus DAC (12 bits) DAC (12 bits) Op amp Op amp WiFi/Bluetooth LE Fully-addressable LED matrix (12x8) Qwiic I²C connector RTC (with support for a buffer battery) Runtime errors diagnostics Model Comparison Uno R3 Uno R4 Minima Uno R4 WiFi Microcontroller Microchip ATmega328P (8-bit AVR RISC) Renesas RA4M1 (32-bit ARM Cortex-M4) Renesas RA4M1 (32-bit ARM Cortex-M4) Operating Voltage 5 V 5 V 5 V Input Voltage 6-20 V 6-24 V 6-24 V Digital I/O Pins 14 14 14 PWM Digital I/O Pins 6 6 6 Analog Input Pins 6 6 6 DC Current per I/O Pin 20 mA 8 mA 8 mA Clock Speed 16 MHz 48 Mhz 48 Mhz Flash Memory 32 KB 256 KB 256 KB SRAM 2 KB 32 KB 32 KB USB USB-B USB-C USB-C DAC (12 bit) – 1 1 SPI 1 2 2 I²C 1 2 2 CAN – 1 1 Op amp – 1 1 SWD – 1 1 RTC – – 1 Qwiic I²C connector – – 1 LED Matrix – – 12x8 (96 red LEDs) LED_BUILTIN 13 13 13 Dimensions 68.6 x 53.4 mm 68.9 x 53.4 mm 68.9 x 53.4 mm Downloads Datasheet Schematics

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Do you make time to talk to your Arduino? Maybe you should! The EasyVR 3 Plus Shield is a voice recognition shield for Arduino boards integrating an EasyVR module. This kit includes the EasyVR 3 Plus Module, the Arduino Shield Adapter, microphone, and headers. With all of these parts, everything has been provided to you to get up and running in a short amount of time with minimal soldering! EasyVR 3 Plus is a multi-purpose speech recognition module designed to add versatile, robust and cost effective speech recognition capabilities to almost any application. The EasyVR 3 Plus module can be used with any host with a UART interface powered at 3.3V – 5V, such as PIC and Arduino boards. Some application examples include home automation, such as voice-controlled light switches, locks, curtains or kitchen appliances, or adding “hearing” to the most popular robots on the market. Note: Please be aware that the EasyVR 3 Plus Shield for Arduino does not come pre-assembled and will require some soldering and assembly before operation. Includes EasyVR 3 Plus Module EasyVR Shield 3 Wired Microphone Speaker cable (Speaker not included) Header Set Features Up to 256 user-defined Speaker Dependent (SD) or Speaker Verification (SV) commands, that can be trained in ANY language, divided into maximum 16 groups (up to 32 SD or 5 SV commands each). A selection of 26 built-in Speaker Independent (SI) commands for ready-to-run basic controls, in the following languages: US English French German Italian Japanese Spanish Other SI commands freely downloadable from the Fortebit website (downloads section). SonicNet™ technology for wireless communications between modules or any other sound source (Audio CD, DVD, MP3 Player). Up to around 21 minutes of pre-recorded sounds or speech. Up to about 137 seconds of live message recording and playback. Real-time Lip-sync capability. DTMF tone generation. Differential audio output that directly supports 8Ω speakers. Easy-to-use Graphical User Interface to program Voice Commands and audio. Standard UART interface (powered at 3.3V - 5V). Simple and robust documented serial protocol to access and program through the host board. Six General purpose I/O lines that can be controlled via UART commands. With the optional Quick T2SI Lite license, up to 28 custom Speaker Independent (SI) command vocabularies, with up to 12 commands each, for a total of 336 possible commands in the following languages: US English British English French German Italian Japanese Korean Mandarin Spanish Compatible with Arduino boards that have the 1.0 Shield interface (UNO R3) including, but not limited to: Arduino Zero Arduino Uno Arduino Mega Arduino Leonardo Arduino Due Supports 5V and 3.3V main boards through the IOREF pin (defaults to 5V if this pin is absent) Supports direct connection to the PC on main boards with a separate USB/Serial chip and a special software-driven “bridge mode” on boards with only native USB interface, for easy access and configuration with the EasyVR Commander Enables different modes of serial connection and also flash updates to the embedded EasyVR module (through the Mode Jumper) Supports remapping of serial pins used by the Shield (in SW mode) Provides a 3.5mm audio output jack suitable for headphones or as a line out

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HC-SR501 auto-senses light for various applications (in house, basement, outdoor, warehouse, garage, etc,) for ventilator control, alarm, etc.Features Automatic infrared detection (LHI778 probe design)Output goes high when objects enter the sensing range, and automatically returns to low when object leaves Optional photosensitive control Optional temperature compensation Trigger mode jumper L: Non-repeatable / delay mode: sensor goes low after the delay, regardless of the presence of the object. H: Repeatable: sensor stays high as long as any object is detected during the delay time. Wide operating voltage range Micro-amp power Output high signal: easy to achieve docking with the various types of circuit. Infrared technology (LHI778 probe design) High sensitivity | high reliability Widely used especially for battery-powered products Specifications Voltage 4.8 V – 20 V Current (idle) <50 µA Logic output 3.3 V / 0 V Delay time 0.3 s – 200 s, custom up to 10 min Lock time 2.5 s (default) Trigger repeat : L = disable , H = enable Sensing range <120 °, within 7 m Temperature – 15 ~ +70 °C Dimension 32 x 24 mmscrew-screw 28 mm, M2 Lens diameter: 23 mm

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It is possible to control Cytron 25Amp 7-58 V High Voltage DC Motor Driver with PWM and DIR inputs. The input logic voltage ranges from 1.8 V to 30 V and the board is compatible with variety of host controllers (such as Arduino, Raspberry Pi, PLC). If you don't want to deal with programming to control the motor, there is an option to control the motor driver from a potentiometer (speed) and a switch (direction). You can also test the motor quickly and conveniently using the onboard test buttons and motor output LEDs without the need to hook up the host controller. It is possible to power the host controller with the buck regulator which produces 5 V output. This is especially useful for high voltage applications where no additional power source nor high voltage buck regulator is needed. This motor driver also incorporates various protection features. If the motor stalls or you've hooked up an oversized motor, the overcurrent protection will take care of the board and protect it from damage. If the motor is trying to draw current more than what the motor driver can support, the motor current will be limited at the maximum threshold. Assisted by temperature protection, the maximum current limiting threshold depends on the board temperature. The higher the board temperature, the lower the current limiting threshold. Note: Power input does not have reverse-voltage protection. Connecting the battery in reverse polarity will damage the motor driver instantaneously. Features Bidirectional control for one brushed DC motor Operating Voltage: DC 7 V to 58 V Maximum Motor Current: 25 A continuous, 60 A peak 5 V output for the host controller (250 mA max) Buttons for quick testing LEDs for motor output state Dual Input Mode: PWM/DIR or Potentiometer/Switch Input PWM/DIR Inputs compatible with 1.8 V, 3.3 V, 5 V, 12 V and 24 V logic (Arduino, Raspberry Pi, PLC, etc) PWM frequency up to 40 kHz (Output frequency is fixed at 16 kHz) Overcurrent protection with active current limiting Temperature protection Undervoltage shutdown Scope of delivery 1 × MD25HV (motor driver board) 1 × Potentiometer with connector 1 × Rocker switch with connector 4 × Nylon PCB Standoffs/Spacers Documents Datasheet Sample Code

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The Arduino Giga R1 WiFi brings the power of the STM32H7 to the same form factor as the popular Mega and Due, being the first Mega board to include onboard Wi-Fi and Bluetooth connectivity. The board provides 76 digital inputs/outputs (12 with PWM capability), 14 analog inputs and 2 analog outputs (DAC) all easily accessible via pin headers. The STM32 microprocessor with dual-core Cortex-M7 and Cortex-M4, together with onboard memory and audio jack enables you to perform machine learning and signal processing on the edge. Microcontroller (STM32H747XI) This dual core 32-bits microcontroller allows you have two brain talking to each other (a Cortex-M7 at 480 MHz and a Cortex-M4 at 240 MHz) you can even run micropython in one and Arduino in the other. Wireless communication (Murata 1DX) Whether you prefer Wi-Fi or Bluetooth, the Giga R1 WiFi got you covered. You can even quickly connect to the Arduino IoT Cloud and keep track of your project remotely. And if you are concerned about the security of the communication, the ATECC608A keeps everything under control. Hardware ports and communication Following the legacy of the Arduino Mega and the Arduino Due, the Giga R1 WiFi has 4x UARTs (hardware serial ports), 3x I²C ports (1 more than its predecessors), 2x SPI ports (1 more than its predecessors), 1x FDCAN. GPIOs and extra pins By keeping the same form factor of the Mega and the Due, you can easily adapt your custom made shields to the Giga R1 WiFi (remember this board works at 3.3 V though!). Also, additional headers have been added so that the total number of GPIO pins is now 76, and two new pins have been added: a VRTC so you can connect a battery to keep the RTC running while the board is off and an OFF pin so you can shut down the board. Connectors The Giga R1 WiFi has extra connectors on board which will facilitate the creation of your project without any extra hardware. This board has: USB-A connector suitable for hosting USB sticks, other mass storage devices and HID devices such as keyboard or mouse. 3.5 mm input-output jack connected to DAC0, DAC1 and A7. USB-C to power and program the board, as well as simulate an HID device such as mouse or keyboard. Jtag connector, 2x5 1.27 mm. 20-pin Arducam camera connector. Higher voltage support: In comparison with its predecessors that support up to 12 V, the Giga R1 WiFi can handle a range of 6 to 24 V. Specifications Microcontroller STM32H747XI dual Cortex-M7+M4 32-bit low power ARM MCU (datasheet) Radio Module Murata 1DX dual WiFi 802.11b/g/n 65 Mbps and Bluetooth (datasheet) Secure Element ATECC608A-MAHDA-T (datasheet) USB USB-C Programming Port / HID USB-A Host (enable with PA_15) Pins Digital I/O pins 76 Analog input pins 12 DAC 2 (DAC0/DAC1) PWM pins 12 Misc VRT & OFF pin Communication UART 4x I²C 3x SPI 2x CAN Yes (requires an external transceiver) Connectors Camera I²C + D54-D67 Display D1N, D0N, D1P, D0P, CKN, CKP + D68-D75 Audio Jack DAC0, DAC1, A7 Power Circuit operating voltage 3.3 V Input voltage (VIN) 6-24 V DC Current per I/O Pin 8 mA Clock Speed Cortex-M7 480 MHz Cortex-M4 240 MHz Memory STM32H747XI 2 MB Flash, 1 MB RAM Dimensions 53 x 101 mm Downloads Datasheet Schematics Pinout

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With the StromPi 3, JOY-iT has now released the next expansion board that's going to meet your power requirements. With a voltage range of 6-61 V and a current of up to 3 A, even larger projects can be supplied with sufficient current. The individual inputs can now be prioritised in various ways, allowing the StromPi 3 to be perfectly customised to your project. In addition to the voltage inputs already available, the new StromPi 3 can now be supplemented with an optional plug-in battery unit that adds a rechargeable emergency power source to your Raspberry Pi with a LiFePO4 battery. As a result, unexpected power outages are in the past! Along with that, the StromPi 3 now has its own configurable and autonomously acting microsystem unit, which can be used for a programmable start-stop behaviour. Let your system run up and down at preset times to perform measurements or to switch devices on and off (also ideal for digital signage or machine control). The RTC (real-time clock) contained in the microsystem can also be used to synchronize the operating Raspberry Pi without Internet access. With the new StromPi 3 you are perfectly equipped for all kinds of projects! Specifications Voltage Input Micro-USB, Wide-Range: 6-61 V Voltage Output 5 V, 3 A / RPi-PinHeader + USB Compatible to Raspberry Pi (A+, B+, 2B, 3, 3B, 3B+, 4B), Banana Pi M2, via USB output: many more single board computers like Arduino, pcDuino, Red Pitaya and many more Optional Extensions Plug-in battery pack (sold separately) with a 1000 mAh LiFePO4 battery unit Microcontroller Control Programming option by prioritizing the individual inputs in an emergency (Power Path) Addional Features RTC real-time clock (programmable start/stop behaviour), control via serial interface (data output, control), optional rechargeable battery is charged immediately during operation Dimensions 55 x 54 x 20 mm Downloads Manuals, scripts and firmware

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Specifications Size: 0.96 inch Resolution: 128 x 64 Visual Angle: >160 ° Input Voltage: 3.3 V ~ 6 V Wide voltage support: 3.3 V, 5 V Viewing angle: >160 Only Need 2 I/O Port to Control Drive IC: SSD1306 Operating temperature: -30 °C to 80 °C OLED Advantages Smaller volume Ultra-low power consumption High contrast Display dot self-luminous Broad voltage support Independent communication method via SPI or IIC 128x64 Dot matrix Broad visual angle: maximum visual angle 160° Industrial-grade operating temperature: -30 ~ 70 °C Warning: The display’s glass is very thin, please be careful while using it. If The glass is broken, display will not work well.

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This is another great IIC/I²C/TWI/SPI Serial Interface. As the pin resources of controller is limited, your project may be not able to use normal LCD shield after connected with a certain quantity of sensors or SD card. However, with this I²C interface module, you will be able to realize data display via only 2 wires. If you already has I²C devices in your project, this LCD module actually cost no more resources at all. It is fantastic for based project. I²C Address: 0X20~0X27 (the original address is 0X20,you can change it yourself) The backlight and contrast is adjusted by potentiometer Comes with 2 IIC interface, which can be connected by Dupont Line or IIC dedicated cable I²C Address: 0x27 (I²C Address: 0X20~0X27 (the original address is 0X27,you can change it yourself) Specifications Compatible for 1602 LCD Supply voltage: 5 V Weight: 5 g Size: 5.5 x 2.3 x 1.4 cm

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Features ATmega32U4 with Arduino Leonardo bootloader on the board MCP2515 CAN Bus controller and MCP2551 CAN Bus transceiver OBD-II and CAN standard pinout selectable at the sub-D connector Compatible with Arduino IDE Parameter Value MCU ATmega32U4(with Arduino Leonardo bootloader) Clock Speed 16 MHz Flash Memory 32 KB SRAM 2.5 KB EEPROM 1 KB Operate Voltage（CAN-BUS） 9 V - 28 V Operate Voltage （MicroUSB） 5 V Input Interface sub-D Included CANBed PCBA sub-D connector 4PIN Terminal 2 x 4PIN 2.0 Connector 1 x 9x2 2.54 Header 1 x 3x2 2.54 Header

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