Elektor GREEN and GOLD members can download their digital edition here. Not a member yet? Click here. ESP32 Audio Transceiver Board (Part 2)Wireless Audio Transmission Inductive AM TransmitterUses Pico’s PIO in an Arduino Sketch Navigating Wireless ProtocolsA Technical Guide Satellite Tracking Using LoRaThe TinyGS Network Bringing Space Data to Earth 4G-Compatible SMS Remote ControlRemotely Control Your Equipment High-Speed ProbeHigh-Impedance Inputs for Signals up to 200 MHz From Life’s ExperienceKafka KrakenSDR Performance Tests with the RP2350Is an Upgrade from Raspberry Pi Pico 1 to Pico 2 Worthwhile? Contact-Free E-Field Measurements (2)A Laser Vibrometer for Assessing the Membrane's Vibrations Crystals and OscillatorsImproving Crystal Accuracy Through Capacitor Selection Starting Out in ElectronicsSpecial Audio ICs Getting Started with Coding a DIY Project SPECTRAN® V6 MobileModular, Configurable Real-Time Spectrum Analyzer for Reliable Measurements Across All Frequency Ranges The Future of AI Is Forged in SiliconAn Interview with Anastasiia Nosova Autonomous Sensor Node v2.0 (System Architecture)Solar-Powered Sensing Platform with Integrated GPS, LoRaWAN, and More Precise PositioningBluetooth Channel Sounding Tested Powering the Future of Wireless CommunicationBTRY’s Ultra-Thin Solid-State Batteries Test-Driven Development in Firmware Writing Phone-Controlled Model CarWi-Fi + ESP32 + Smartphone = Remote Control 2025: An AI OdysseyAI Reasoning Models: The Chain-of-Thought Revolution Solar Charge Controller with MPP Tracking (3)Software and Commissioning Raspberry Pi Zero Web Streaming CameraUsing the ZeroTier VPN

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Elektor GREEN and GOLD members can download their digital edition here. Not a member yet? Click here. ESP32 Audio Transceiver Board (Part 2)Wireless Audio Transmission Inductive AM TransmitterUses Pico’s PIO in an Arduino Sketch Navigating Wireless ProtocolsA Technical Guide Satellite Tracking Using LoRaThe TinyGS Network Bringing Space Data to Earth 4G-Compatible SMS Remote ControlRemotely Control Your Equipment High-Speed ProbeHigh-Impedance Inputs for Signals up to 200 MHz From Life’s ExperienceKafka KrakenSDR Performance Tests with the RP2350Is an Upgrade from Raspberry Pi Pico 1 to Pico 2 Worthwhile? Contact-Free E-Field Measurements (2)A Laser Vibrometer for Assessing the Membrane's Vibrations Crystals and OscillatorsImproving Crystal Accuracy Through Capacitor Selection Starting Out in ElectronicsSpecial Audio ICs Getting Started with Coding a DIY Project SPECTRAN® V6 MobileModular, Configurable Real-Time Spectrum Analyzer for Reliable Measurements Across All Frequency Ranges The Future of AI Is Forged in SiliconAn Interview with Anastasiia Nosova Autonomous Sensor Node v2.0 (System Architecture)Solar-Powered Sensing Platform with Integrated GPS, LoRaWAN, and More Precise PositioningBluetooth Channel Sounding Tested Powering the Future of Wireless CommunicationBTRY’s Ultra-Thin Solid-State Batteries Test-Driven Development in Firmware Writing Phone-Controlled Model CarWi-Fi + ESP32 + Smartphone = Remote Control 2025: An AI OdysseyAI Reasoning Models: The Chain-of-Thought Revolution Solar Charge Controller with MPP Tracking (3)Software and Commissioning Raspberry Pi Zero Web Streaming CameraUsing the ZeroTier VPN

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Make your project dreams come true: an odometer for the hamster wheel, a fully automatic control of your ant farm with web interface, or the Sandwich-O-Mat – a machine that toasts and grills sandwiches of your choice. With the Arduino and the DIY or Maker movement, not only did entry into microcontroller programming become child's play, but a second development also took place: Resourceful developers brought small boards – so-called shields or modules – to the market, which greatly simplified the use of additional hardware. The small modules contain all the important electronic parts to be connected to the microcontroller with a few plug-in cables, eliminating the need for a fiddly and time-consuming assembly on the plug-in board. In addition, it is also possible to handle tiny components that do not have any connecting legs (so-called SMDs). Projects Discussed Arduino seeks connection BMP and introduction to libraries, I²C Learn I/O basics with the multi-purpose shield I²C LCD adapter and DOT matrix displays LCD keypad shield Level converter W5100: Internet connection I/O expansion shield Relays and solid-state relays The multi-function shield: A universal control unit Connecting an SD card reader via SPI Keys and 7-segment displays 16-bit ADC MCP4725 DAC 16-way PWM servo driver MP3 player GPS data logger using an SD card Touch sensor Joystick SHT31: Temperature and humidity VEML6070 UV-A sensor VL53L0X time-of-flight Ultrasonic distance meter MAX7219-based LED DOT matrix display DS3231 RTC Port expander MCP23017 433 MHz radio MPU-650 gyroscope ADXL345 accelerometer WS2812 RGB LEDs Power supply MQ-xx gas sensors CO2 gas sensor ACS712 current sensor INA219 current sensor L298 motor driver MFRC522 RFID 28BYJ-48 stepper motor TMC2209 silent step stick X9C10x digital potentiometer ST7735 in a color TFT display e-Paper display Bluetooth Geiger counter SIM800L GSM module I²C multiplexer Controller Area Network

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Although the Arduino isn’t a novelty any longer, there are still many beginners who want to try programming and development with a microcontroller, and to them, it is all new. All beginnings can be difficult, though they should be light and enjoyable. You do not need much or expensive equipment for the examples. The circuits are built on a small breadboard, and, if necessary, connected to an Arduino Uno, which you can program on a Windows PC. You will find clear examples of how to build all circuits, ensuring easy and error-free reproduction. Projects Discussed Current & Voltage – How it all began Arduino Hardware Arduino Programming The Electrical Circuit Measuring with the Multimeter Circuit Diagrams and Breadboards Creating Circuit Diagrams Breadboard Views with Fritzing Online Circuit Simulation Indispensable: Resistors (Part 1) Hands-on with Resistors (Part 2) Variable Resistors Diodes: One-way Street for Current The Transistor Switch Electromagnetism Relays and Motors op-amps: Operational Amplifiers Capacitors The NE555 Timer PWM and Analogue Values with Arduino 7-Segment Temperature Display Introduction to Soldering and LCDs

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Whatever the methods or even then financial means you have to make your circuits work, the power supply should rank high if not Number One in your considerations. The design block simply called “power supply” is hugely underrated both in electronics creation and repair. Yet, the “PSU” has enormous diversity and comes in wildly differing guises like AC/DC, generator, battery (rechargeable or not), PV panel, benchtop, linear or switch-mode, to mention but a few. The output ranges are also staggering like nano-amps to kiloamps and the same for voltages.This special covers the features and design aspects of power supplies.ContentsBasics Battery ManagementWhat to be aware of when using (Lithium) batteries. Fixed-Voltage Power Supply using Linear RegulatorsThe best result right after batteries. Light Energy HarvestingA small solar panel is used in an energy harvesting project to manage and charge four AAA cells. Mains Powered Adapter DesignBasic circuits and tips for transformers, rectification, filtering and stabilization. LM317 Soft StartThe high inrush current pulse should be avoided. Controllable RectifiersSome suggestions to keep the power loss in the linear regulator as low as possible. Components Worksheet: The LM117 / LM217 / LM317 Voltage Regulators SupercapsLow voltage but lots of current… or not? Reviews JOY-iT RD6006 Benchtop Power Supply Kit Siglent SDL1020X Programmable DC Electronic Load Projects Balcony Power PlantDIY solar balcony = speedy payback! DIY LiPo Supercharger KitFrom handcrafted to mass market Dual-Anode MOSFET ThyristorFaster and less wasteful than the old SCR Battery JuicerDo not throw away, squeeze! High-Voltage Power Supply with Curve TracerGenerate voltages up to 400 V and trace characteristics curves for valves and transistors High Voltage Supply for RIAAFor RIAA tube preamps and other applications. MicroSupplyA lab power supply for connected devices Phantom Power Supply using Switched CapacitorsVoltage tripler using three ICs The SMPS800RE Switch-Mode Supply for the Elektor Fortissimo-100Reliable, light and affordable Soft Start for PSUBe nice to your power supply – and its load UniLab 20-30 V, 3 A compact switch-mode lab power supply Tips Soft Start for Step-Down Switching Regulators Low Loss Current Limit Powerbank Surprise A Virtual Ground Battery Maintainer Battery Pack Discharger Connecting Voltage Regulators in Parallel

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Contents Projects PicoVoiceVoice alienation and sound effects with the Raspberry Pi Pico Navigation with Vibration Feedback POV Display Pulse Width Modulation (PWM) with the Raspberry Pi Pico Wi-Fi with the Raspberry Pi Pico 'Hello World' from the Raspberry Pi Pico and RP2040A look at the Raspberry Pi Foundation’s first microcontroller Simple On-Off Temperature Controller with Raspberry Pi HAT Multitasking with the Raspberry PiShowcase: a traffic lights controller The Raspberry Pi Ruler GadgetFun with a time-of-flight sensor Raspberry Pi Buffer Board (Mk. 1)Never blow up the I/O again FM radio with RDSA top HAT project for the Raspberry Pi LoRa with the Raspberry Pi PicoFun with MicroPython! Tutorials Qt for the Raspberry Pi Raspberry Pi Pico Programmingwith MicroPython and Thonny Raspberry Pi Full StackRPi and RF24 at the heart of a sensor network Raspberry Pi Bash Command Cheat Sheet Community Java on the Raspberry PiAn interview with Frank Delporte Reviews Introducing the New Raspberry Pi Pico W, H, and WH Secure Boot Solution for Raspberry PiRetrofit security at a reasonable price Review: SmartPi – Smart Meter Extension for Raspberry Pi Review: The Enviro+ Raspberry Pi HATMeasuring environmental data with Raspberry Pi and the HAT Enviro+ Review: Meet the Raspberry Pi 4All new but still good? Raspberry Pi Gets a Fast 3.5' Touch DisplayMore power at no extra charge Book Launch: Raspberry Pi for Radio Amateurs

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Build your textbook weather station or conduct environmental research together with the whole world. With many practical projects for Arduino, Raspberry Pi, NodeMCU, ESP32, and other development boards. Weather stations have enjoyed great popularity for decades. Every current and even every long discontinued electronics magazine has regularly featured articles on building your own weather station. Over the years, they have become increasingly sophisticated and can now be fully integrated into an automated home — although this often requires loyalty to an (expensive) brand manufacturer across all components. With your own weather and environmental data, you can keep up and measure things that no commercial station can. It’s also fun: expand your knowledge of electronics, current microcontroller development boards and programming languages in a fun and meaningful way. For less than 10 euros you can get started and record your first environmental data — with time and growing interest, you will continue to expand your system. In this Edition Which Microcontroller Fits My Project? The Right Development Environment Tracking Wind and Weather Weather Display with OpenWeatherMap and Vacuum Fluorescent Display Volatile Organic Compounds in the Air We Breathe Working with MQ Sensors: Measuring Carbon Monoxide — Odorless but Toxic CO2 Traffic Light with ThingSpeak IoT Connection An Automatic Plant Watering System Good Indoor Climate: Temperature and Humidity are Important criteria Classy Thermometer with Vintage Tube Technology Nostalgic Weather House for the Whole Family Measuring Air Pressure and Temperature Accurately Sunburn Warning Device DIY Sensor for Sunshine Duration Simple Smartphone Says: Fog or Clear View? Identifying Earthquakes Liquid Level Measurement for Vessels and Reservoirs Water pH Value Measurement Detecting Radioactive Radiation GPS: Sensor Location Service Across the Globe Saving and Timestamping Log Files on SD Cards LoRaWAN, The Things Network, and ThingSpeak Operating a LoRaWAN Gateway for TTN Defying "Wind and Weather" Mega Display with Weather Forecasz

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Build your textbook weather station or conduct environmental research together with the whole world. With many practical projects for Arduino, Raspberry Pi, NodeMCU, ESP32, and other development boards. Weather stations have enjoyed great popularity for decades. Every current and even every long discontinued electronics magazine has regularly featured articles on building your own weather station. Over the years, they have become increasingly sophisticated and can now be fully integrated into an automated home — although this often requires loyalty to an (expensive) brand manufacturer across all components. With your own weather and environmental data, you can keep up and measure things that no commercial station can. It’s also fun: expand your knowledge of electronics, current microcontroller development boards and programming languages in a fun and meaningful way. For less than 10 euros you can get started and record your first environmental data — with time and growing interest, you will continue to expand your system. In this Edition Which Microcontroller Fits My Project? The Right Development Environment Tracking Wind and Weather Weather Display with OpenWeatherMap and Vacuum Fluorescent Display Volatile Organic Compounds in the Air We Breathe Working with MQ Sensors: Measuring Carbon Monoxide — Odorless but Toxic CO2 Traffic Light with ThingSpeak IoT Connection An Automatic Plant Watering System Good Indoor Climate: Temperature and Humidity are Important criteria Classy Thermometer with Vintage Tube Technology Nostalgic Weather House for the Whole Family Measuring Air Pressure and Temperature Accurately Sunburn Warning Device DIY Sensor for Sunshine Duration Simple Smartphone Says: Fog or Clear View? Identifying Earthquakes Liquid Level Measurement for Vessels and Reservoirs Water pH Value Measurement Detecting Radioactive Radiation GPS: Sensor Location Service Across the Globe Saving and Timestamping Log Files on SD Cards LoRaWAN, The Things Network, and ThingSpeak Operating a LoRaWAN Gateway for TTN Defying "Wind and Weather" Mega Display with Weather Forecasz

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As demand for solar panel installation has risen sharply, especially for installations larger than balcony power plants, the order books of solar companies are full. If you ask for a quote today, you may have to wait a while, if your request isn't simply postponed indefinitely. Another consequence of the solar boom is that some companies are charging very high prices for installations. Yet there is an obvious and radical solution to the problem of excessive prices: Do it yourself, as the English say. The price of materials is currently affordable, and it's the ideal time for those who do the work themselves. They couldn't save more. Add to this the satisfaction of doing something useful, both economically and ecologically, and the pleasure of building yourself. In this special issue, you'll find a wide selection of Elektor assemblies, from solar panel controllers to solar water heaters and solar panel orientation systems. The issue also contains practical information on solar panel installation and the technology behind them. Finally, there are a number of articles on the subject of balcony power plants, from how to install them to how to connect them to the Internet... Contents BASICS Dimensioning Photovoltaic Panel ArraysAn introduction to photovoltaic energy and the commonest techniques,followed by simplified calculation models and setup guidelines. Light Sensor TechnologyMeasuring daylight using LEDs. Solar Power Made SimpleSolar charging with and without a controller. Cable Cross-sections and Energy Losses in Solar SystemsKey considerations on the minimum values to respect for electricalcurrent in solar panel cabling. Solar ModulesEverything you always wanted to know about solar panels... Ideal Diode ControllerDiode Circuits with Low Power Dissipation. TIPS Tracking for Solar Modules zBot Solar/Battery Power Supply Solar Cell Array Charger with Regulator Solar Cell Voltage Regulator Solar-Powered Night Light Alternative Solar Battery Charger PROJECTS Energy LoggerMeasuring and Recording Power Consumption. Tiny Solar SupplySunlight In, 3.3 V Out. A Do-It-Yourself DTURead Data from Small Inverters by μC. Solar ChargerPortable energy for people on the move. Solar Thermal Energy RegulatorMaximum power point tracking explored. 2-amp Maximum Power Tracking ChargerSolar Power To The Max. Computer-driven HeliostatFollow the sun or the stars. Garden LightingUsing solar cells. Solar Panel Voltage Converter for IoT DevicesYes we CAN exploit indoor lighting. Travel ChargerFree power in the mountains. Solar Cell Battery Charger/MonitorWith protection against deep discharge. Solar-powered Battery ChargerPIC12C671 avoids overcharging and deep charging. Converters for Photovoltaic PanelsContributed by TME (Transfer MultisortElektronik). Solar Charging RegulatorFor panels up to 53 watts. Solar-Powered ChargerFor lead-acid batteries. CAN Bus + Arduino for Solar PV Cell MonitoringDetect and locate serviceable panels in large arrays. Balcony Power Plant 2.0The latest: solar panels, installation and inverters

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As demand for solar panel installation has risen sharply, especially for installations larger than balcony power plants, the order books of solar companies are full. If you ask for a quote today, you may have to wait a while, if your request isn't simply postponed indefinitely. Another consequence of the solar boom is that some companies are charging very high prices for installations. Yet there is an obvious and radical solution to the problem of excessive prices: Do it yourself, as the English say. The price of materials is currently affordable, and it's the ideal time for those who do the work themselves. They couldn't save more. Add to this the satisfaction of doing something useful, both economically and ecologically, and the pleasure of building yourself. In this special issue, you'll find a wide selection of Elektor assemblies, from solar panel controllers to solar water heaters and solar panel orientation systems. The issue also contains practical information on solar panel installation and the technology behind them. Finally, there are a number of articles on the subject of balcony power plants, from how to install them to how to connect them to the Internet... Contents BASICS Dimensioning Photovoltaic Panel ArraysAn introduction to photovoltaic energy and the commonest techniques,followed by simplified calculation models and setup guidelines. Light Sensor TechnologyMeasuring daylight using LEDs. Solar Power Made SimpleSolar charging with and without a controller. Cable Cross-sections and Energy Losses in Solar SystemsKey considerations on the minimum values to respect for electricalcurrent in solar panel cabling. Solar ModulesEverything you always wanted to know about solar panels... Ideal Diode ControllerDiode Circuits with Low Power Dissipation. TIPS Tracking for Solar Modules zBot Solar/Battery Power Supply Solar Cell Array Charger with Regulator Solar Cell Voltage Regulator Solar-Powered Night Light Alternative Solar Battery Charger PROJECTS Energy LoggerMeasuring and Recording Power Consumption. Tiny Solar SupplySunlight In, 3.3 V Out. A Do-It-Yourself DTURead Data from Small Inverters by μC. Solar ChargerPortable energy for people on the move. Solar Thermal Energy RegulatorMaximum power point tracking explored. 2-amp Maximum Power Tracking ChargerSolar Power To The Max. Computer-driven HeliostatFollow the sun or the stars. Garden LightingUsing solar cells. Solar Panel Voltage Converter for IoT DevicesYes we CAN exploit indoor lighting. Travel ChargerFree power in the mountains. Solar Cell Battery Charger/MonitorWith protection against deep discharge. Solar-powered Battery ChargerPIC12C671 avoids overcharging and deep charging. Converters for Photovoltaic PanelsContributed by TME (Transfer MultisortElektronik). Solar Charging RegulatorFor panels up to 53 watts. Solar-Powered ChargerFor lead-acid batteries. CAN Bus + Arduino for Solar PV Cell MonitoringDetect and locate serviceable panels in large arrays. Balcony Power Plant 2.0The latest: solar panels, installation and inverters

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Over 50 Circuits & Projects US-Style Siren Two Rotary Encoders on One Analog Input How to Build a Digital 220-V AC Dimmer with Arduino Current Source for LEDs Detect Four Switches with 1 Pin Tiny On/Off Switch with Battery Level Check DIY Hand Sanitizer Dispenser A Simple Electronic Organ Ultra-Simple Stereo Amplifier Sound Activated Switch for Amplifiers Balanced/Unbalanced Converter External Mains Filter Button-Free Door Control DI Box for a Smartphone Fun With Running Lights One-Button Thyristor Control Quasi-Analog Exposure Timer for the Dark Room Circuits Galore From the Hackster.io Community Analog Tanning Timer Yet Another Single-Wire LCD Interface Simple AVR ATtiny13-Based PWM Generator Second Life for Batteries Touch Switch for LED Lights Tester for LEDs and DIP Switches Go/No-Go IR Control Tester Power Semiconductor Tester SPI for WS2812(B) LEDs Measuring Power Inductors One Plug for Raspberry Pi and Audio DAC DIY Test Fixture for the LCR Meter Arduino Ammeter Two-Finger Organ Low Noise ADC Calibrator DC/DC Boost Converter Two Potentiometers on One Digital Input Acoustic Proximity Sensor Battery-Free Radiator Sensor A Circuit for Detecting Bugs and Wireless Cameras Car Interior Light Timer Candle Simulator Digital Kitchen Timer Milliohm Meter Hot Water Production Delay Timer Simple Charger for 2S 18650 Cells Tiny Frequency Reference Low-Power IR Switch Recycle Your Car’s Telephone Charger Microphone Pre-Amp for Arduino DIY EMI Filters Electronic Dice Without an MCU Finger Capacitor A Self-Charging LED Flasher Also in this edition KiCad 6 – Five Features to Consider Flashback – The Elektor SC/MP Computer Interview – Making Art with Electricity My First PCB – Going Head First Into KiCad Minimizing Hardware with Smart Software Infographics – Facts and Figures New Devices from Analog Flashback – The Elektor Metal Detector Hexadoku – The Original Elektorized Sudoku

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The Elektor Super Servo Tester can control servos and measure servo signals. It can test up to four servo channels at the same time. The Super Servo Tester comes as a kit. All the parts required to assemble the Super Servo Tester are included in the kit. Assembling the kit requires basic soldering skills. The microcontroller is already programmed. The Super Servo Tester features two operating modes: Control/Manual and Measure/Inputs. In Control/Manual mode the Super Servo Tester generates control signals on its outputs for up to four servos or for the flight controller or ESC. The signals are controlled by the four potentiometers. In Measure/Inputs the Super Servo Tester measures the servo signals connected to its inputs. These signals may come from for instance an ESC, a flight controller, or the receiver or another device. The signals are also routed to the outputs to control the servos or the flight controller or ESC. The results are shown on the display. Specifications Operating modes Control/Manual & Measure/Inputs Channels 3 Servo signal inputs 4 Servo signal outputs 4 Alarm Buzzer & LED Display 0.96' OLED (128 x 32 pixels) Input voltage on K5 7-12 VDC Input voltage on K1 5-7.5 VDC Input current 30 mA (9 VDC on K5, nothing connected to K1 and K2) Dimensions 113 x 66 x 25 mm Weight 60 g Included Resistors (0.25 W) R1, R3 1 kΩ, 5% R2, R4, R5, R6, R7, R9, R10 10 kΩ, 5% R8 22 Ω, 5% P1, P2, P3, P4 10 kΩ, lin/B, vertical potentiometer Capacitors C1 100 µF 16 V C2 10 µF 25 V C3, C4, C7 100 nF C5, C6 22 pF Semiconductors D1 1N5817 D2 LM385Z-2.5 D3 BZX79-C5V1 IC1 7805 IC2 ATmega328P-PU, programmed LED1 LED, 3 mm, red T1 2N7000 Miscellaneous BUZ1 Piezo buzzer with oscillator K1, K2 2-row, 12-way pinheader, 90° K5 Barrel jack K4 1-row, 4-way pin socket K3 2-row, 6-way boxed pinheader S1 Slide switch DPDT S2 Slide switch SPDT X1 Crystal, 16 MHz 28-way DIP socket for IC2 Elektor PCB OLED display, 0.96', 128 x 32 pixels, 4-pin I²C interface Links Elektor Magazine Elektor Labs

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ARM Cortex-M Embedded Design from 0 to 1 Hobbyists can mash together amazing functional systems using platforms like Arduino or Raspberry Pi, but it is imperative that engineers and product designers understand the foundational knowledge of embedded design. There are very few resources available that describe the thinking, strategies, and processes to take an idea through hardware design and low-level driver development, and successfully build a complete embedded system. Many engineers end up learning the hard way, or never really learn at all. ARM processors are essentially ubiquitous in embedded systems. Design engineers building novel devices must understand the fundamentals of these systems and be able to break down large, complicated ideas into manageable pieces. Successful product development means traversing a huge amount of documentation to understand how to accomplish what you need, then put everything together to create a robust system that will reliably operate and be maintainable for years to come. This book is a case study in embedded design including discussion of the hardware, processor initialization, low‑level driver development, and application interface design for a product. Though we describe this through a specific application of a Cortex-M3 development board, our mission is to help the reader build foundational skills critical to being an excellent product developer. The completed development board is available to maximize the impact of this book, and the working platform that you create can then be used as a base for further development and learning. The Embedded in Embedded program is about teaching fundamental skill sets to help engineers build a solid foundation of knowledge that can be applied in any design environment. With nearly 20 years of experience in the industry, the author communicates the critical skill development that is demanded by companies and essential to successful design. This book is as much about building a great design process, critical thinking, and even social considerations important to developers as it is about technical hardware and firmware design. Downloads EiE Software Archive (200 MB) IAR ARM 8.10.1 (Recommended IDE version to use) (1.2 GB) IAR ARM 7.20.1 (Optional IDE version to use) (600 MB)

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History and Future in the Internet of Things This book thoroughly reviews the history of the development of embedded Operating Systems, covers the technical characteristics, historic facts, as well as background business stories of mainstream embedded Operating Systems, and analyzes the technical evolution, market development, and new opportunities of embedded Operating Systems in the age of the Internet of Things. From the perspective of time, the book examines the evolution of critical technical aspects, including real-time and Power Management of embedded Operating Systems and Linux, Internet of Things security, communication, and cloud computing. The book looks into applications of embedded Operating Systems with important markets of mobile phones, communication equipment, automobile, and wearable devices, and also discusses business model and the issue of intellectual property of embedded Operating Systems. In addition, the book walks through the status quo, technical features, product evaluation and background of the Internet of Things Operating Systems in the second half of the book.

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History and Future in the Internet of Things This book thoroughly reviews the history of the development of embedded Operating Systems, covers the technical characteristics, historic facts, as well as background business stories of mainstream embedded Operating Systems, and analyzes the technical evolution, market development, and new opportunities of embedded Operating Systems in the age of the Internet of Things. From the perspective of time, the book examines the evolution of critical technical aspects, including real-time and Power Management of embedded Operating Systems and Linux, Internet of Things security, communication, and cloud computing. The book looks into applications of embedded Operating Systems with important markets of mobile phones, communication equipment, automobile, and wearable devices, and also discusses business model and the issue of intellectual property of embedded Operating Systems. In addition, the book walks through the status quo, technical features, product evaluation and background of the Internet of Things Operating Systems in the second half of the book.

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The ESP-01 Adapter 3.3-5 V is the ideal solution for connecting an ESP-01 ESP8266 module to a 5 V system such as Arduino Uno. Features Adapter module for ESP-01 Wi-Fi module 3.3 V voltage regulator circuit & onboard level conversion for easy use of 5 V microcontroller with ESP-01 Wi-Fi module Compatible with Uno R3 4.5~5.5 V (on-board 3.3 V LDO Regulator) Interface logic voltage: 3.3-5 V compatible (on-board level shift) Current: 0-240 mA

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This Wi-Fi module is based on the popular ESP8266 chip. The module is FCC and CE certified and RoHS compliant. Fully compatible with ESP-12E. 13 GPIO pins, 1 analog input, 4 MB flash memory.

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The ESP32-C3 chip has industry-leading low-power performance and radio frequency performance, and supports Wi-Fi IEEE802.11b/g/n protocol and BLE 5.0. The chip is equipped with a RISC-V 32-bit single-core processor with an operating frequency of up to 160 MHz. Support secondary development without using other microcontrollers or processors. The chip has built-in 400 KB SRAM, 384 KB ROM, 8 KB RTC SRAM, built-in 4 MB Flash also supports external Flash. The chip supports a variety of low power consumption working states, which can meet the power consumption requirements of various application scenarios. The chip's unique features such as fine clock gating function, dynamic voltage clock frequency adjustment function, and RF output power adjustable function can achieve the best balance between communication distance, communication rate and power consumption. The ESP-C3-12F module provides a wealth of peripheral interfaces, including UART, PWM, SPI, I²S, I²C, ADC, temperature sensor and up to 15 GPIOs. Features Support Wi-Fi 802.11b/g/n, 1T1R mode data rate up to 150 Mbps Support BLE5.0, does not support classic Bluetooth, rate support: 125 Kbps, 500 Kbps, 1 Mbps, 2 Mbps RISC-V 32-bit single-core processor, supports a clock frequency of up to 160 MHz, has 400 KB SRAM, 384 KB ROM, 8 KB RTC SRAM Support UART/PWM/GPIO/ADC/I²C/I²S interface, support temperature sensor, pulse counter The development board has RGB three-in-one lamp beads, which is convenient for the second development of customers. Support multiple sleep modes, deep sleep current is less than 5 uA Serial port rate up to 5 Mbps Support STA/AP/STA+AP mode and promiscuous mode Support Smart Config (APP)/AirKiss (WeChat) of Android and iOS, one-click network configuration Support serial port local upgrade and remote firmware upgrade (FOTA) General AT commands can be used quickly Support secondary development, integrated Windows and Linux development environment About Flash configuration ESP-C3-12F uses the built-in 4 MB Flash of the chip by default, and supports the external Flash version of the chip.

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The ESP8266 from Espressif is a Wi-Fi microchip with full TCP/IP stack and microcontroller capability. It has made waves in the maker community with its low price. But many developers were unhappy with ESP8266's high power consumption. The ESP32, equipped with a ULP (Ultra Low Power) coprocessor, offers a remedy for this. This e-book features a number of projects featuring ESP32 & ESP8266 as well as an interview with the CEO of Espressif Teo Swee Ann. Articles ESP32 for Use in Industry 4.0 Equipment Scrolling Message Display, 512 LEDs controlled over Wi-Fi via an ESP-12F The Connected Greenhouse IoT demonstration project using MQTT and Node-RED VFD-tube Clock with ESP32 with an accurate Internet-derived time ESP32 Low Power DCF77 Emulator with ESP8266 ESP8266 on the Elektor Android I/O Board The Reason Behind the Hugely Popular ESP8266? Wi-Fi Desktop Thermostat Timers for the Wi-Fi Desktop Thermostat PlatformIO, the Universal Programming Tool Weather Display, Visualize current weather data on an LC display GoNotify, a Flexible IoT Sensor Interface ESP32 for Power Users USB Programming Adaptor for ESP8266 Getting started with ESP32 and the Arduino IDE MicroPython, Python for small systems RGBDigit Clock WLAN for Microcontrollers Return of the Wi-Fi Controller Board Compact and Self-contained WLAN

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This development board (also known as "Cheap Yellow Display") is powered by the ESP-WROOM-32, a dual-core MCU with integrated Wi-Fi and Bluetooth capabilities. It operates at a main frequency of up to 240 MHz, with 520 KB SRAM, 448 KBROM, and a 4 MB Flash memory. The board features a 2.8-inch display with a resolution of 240x320 and resistive touch. Furthermore, the board includes a backlight control circuit, touch control circuit, speaker drive circuit, photosensitive circuit, and RGB-LED control circuit. It also provides a TF card slot, serial interface, DHT11 temperature and humidity sensor interface, and additional IO ports. The module supports development in Arduino IDE, ESP-IDE, MicroPython, and Mixly. Applications Image transmission for Smart Home device Wireless monitoring Smart agriculture QR wireless recognition Wireless positioning system signal And other IoT applications Specifications Microcontroller ESP-WROOM-32 (Dual-core MCU with integrated Wi-Fi and Bluetooth) Frequency Up to 240 MHz (computing power is up to 600 DMIPS) SRAM 520 KB ROM 448 KB Flash 4 MB Operating voltage 5 V Power consumption approx. 115 mA Display 2.8-inch color TFT screen (240x320) Touch Resistive Touch Driver chip ILI9341 Dimensions 50 x 86 mm Weight 50 g Included 1x ESP32 Dev Board with 2.8" Display and acrylic Shell 1x Touch pen 1x Connector cable 1x USB cable Downloads GitHub

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ESP32-C3-DevKitM-1 is an entry-level development board based on ESP32-C3-MINI-1, a module named for its small size. This board integrates complete Wi-Fi and Bluetooth LE functions. Most of the I/O pins on the ESP32-C3-MINI-1 module are broken out to the pin headers on both sides of this board for easy interfacing. Developers can either connect peripherals with jumper wires or mount ESP32-C3-DevKitM-1 on a breadboard. Specifications ESP32-C3-MINI-1 ESP32-C3-MINI-1 is a general-purpose Wi-Fi and Bluetooth LE combo module that comes with a PCB antenna. At the core of this module is ESP32-C3FN4, a chip that has an embedded flash of 4 MB. Since flash is packaged in the ESP32-C3FN4 chip, rather than integrated into the module, ESP32-C3-MINI-1 has a smaller package size. 5 V to 3.3 V LDO Power regulator that converts a 5 V supply into a 3.3 V output. 5 V Power On LED Turns on when the USB power is connected to the board. Pin Headers All available GPIO pins (except for the SPI bus for flash) are broken out to the pin headers on the board. For details, please see Header Block. Boot Button Download button. Holding down Boot and then pressing Reset initiates Firmware Download mode for downloading firmware through the serial port. Micro-USB Port USB interface. Power supply for the board as well as the communication interface between a computer and the ESP32-C3FN4 chip. Reset Button Press this button to restart the system. USB-to-UART Bridge Single USB-UART bridge chip provides transfer rates up to 3 Mbps. RGB LED Addressable RGB LED, driven by GPIO 8. Downloads ESP32-C3 Datasheet ESP32-C3-MINI-1 Datasheet ESP32-C3-DevKitM-1 Schematic ESP32-C3-DevKitM-1 PCB Layout ESP32-C3-DevKitM-1 Dimensions

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ESP32-C3-WROOM-02U is a general-purpose Wi-Fi and Bluetooth LE module. The rich set of peripherals and high performance make the module an ideal choice for smart homes, industrial automation, health care, consumer electronics, etc. ESP32-C3-WROOM-02U features an external SPI flash and comes with a connector for an external antenna. ESP32-C3-WROOM-02U has an operating ambient temperature option of –40∼85°C, embedded with the ESP32-C3 chip. ESP32-C3 has a 32-bit RISC-V single-core processor. It integrates a rich set of peripherals, ranging from UART, I²C, I²S, remote control peripheral, LED PWM controller, general DMA controller, TWAI controller, USB Serial/JTAG controller, temperature sensor, ADC, etc. It also includes SPI, Dual SPI and Quad SPI interfaces. Features Flash: 4 MB (Quad SPI) Dimensions: 18.0 x 20.0 x 3.2 mm Downloads Datasheet

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