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Resonances From Aether Days A Pictorial and Technical Analysis from WWII to the Internet Age From the birth of radio to the late 1980s, much of real life unfolded through shortwave communication. World War II demonstrated—beyond a shadow of a doubt—that effective communications equipment was a vital prerequisite for military success. In the postwar years, shortwave became the backbone on which many of the world's most critical services depended every day. All the radio equipment—through whose cathodes, grids, plates, and transistors so much of human history has flowed—is an exceptional subject of study and enjoyment for those of us who are passionate about vintage electronics. In this book, which begins in the aftermath of World War II, you’ll find a rich collection of information: descriptions, tips, technical notes, photos, and schematics that will be valuable for anyone interested in restoring—or simply learning about—these extraordinary witnesses to one of the most remarkable eras in technological history. My hope is that these pages will help preserve this vast treasure of knowledge, innovation, and history—a heritage that far transcends the purely technical.

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An illustrated chronicle of Teknology for collectors and restorers Oscilloscopes have made a major contribution to the advancement of human knowledge, not only in electronics, but in all sciences, whenever a physical quantity can be converted into a timerelated electrical signal. This book traces the history of a crucial instrument through many Tektronix products. This is the company that invented and patented most of the functions found in all oscilloscopes today. Tek is and will always be synonymous with the oscilloscope. In nearly 600 pages, with hundreds of gorgeous photos, diagrams, anecdotes, and technical data, you'll travel through the history of Tektronix in a superb collector's edition with a technical point of view. The author is not afraid to get his hands dirty restoring his own Tek equipment. The journey starts in the early 1950s. It ends in the '90s, after exploring the ins and outs of the most interesting models in the 300, 400, 500, 5000, 7000, and 11000 series, from tubes to advanced hybrid technologies. Downloads NEW: Free Supplement (136 pages, 401 MB)

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Specifications A4 (210 x 297 mm) squared-grid spiral-bound notebook with watermark breadboards 158 pages, card covers. The book also includes Microcontroller programming cheat sheet Common circuits and calculations Pinouts Resistor color codes ASCII table

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The SparkFun MicroMod mikroBUS Carrier Board takes advantage of the MicroMod, Qwiic, and mikroBUS ecosystems making it easy to rapidly prototype with each of them, combined. The MicroMod M.2 socket and mikroBUS 8-pin header provide users the freedom to experiment with any Processor Board in the MicroMod ecosystem and any Click board in the mikroBUS ecosystem, respectively. This board also features two Qwiic connectors to seamlessly integrate hundreds of Qwiic sensors and accessories into your project. The mikroBUS socket comprises a pair of 8-pin female headers with a standardized pin configuration. The pins consist of three groups of communications pins (SPI, UART and I²C), six additional pins (PWM, Interrupt, Analog input, Reset and Chip select), and two power groups (3.3 V and 5 V). While a modern USB-C connector makes programming easy, the Carrier Board is also equipped with a MCP73831 Single-Cell Lithium-Ion/Lithium-Polymer Charge IC so you can charge an attached single-cell LiPo battery. The charge IC receives power from the USB connection and can source up to 450 mA to charge an attached battery. Features M.2 MicroMod (Processor Board) Connector USB-C Connector 3.3 V 1 A Voltage Regulator 2x Qwiic Connectors mikroBUS Socket Boot/Reset Buttons Charge Circuit JTAG/SWD PTH Pins Downloads Schematic Eagle Files Board Dimensions Hookup Guide Getting Started with Necto Studio mikroBUS Standard Qwiic Info Page GitHub Hardware Repo

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This 233-page e-book is packed with Arduino ideas, explanations, tips, diagrams, programs, PCB layouts, and more – enough to provide days of informative, inspiring, and stimulating reading pleasure! The PDF document includes a table of contents with links to the individual projects, allowing you to easily navigate to the sections you’re most interested in. This way, you can quickly and effortlessly switch between projects and find exactly what you’re looking for.

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The QA403 is QuantAsylum's fourth-generation audio analyzer. The QA403 extends the functionality of the QA402 with improved noise and distortion performance, in addition to a flatter response at band edges. The compact size of the QA403 means you can take it just about anywhere. Features 24-bit ADC/DAC Up to 192 kS/s Fully isolated from PC Differential Input/Output USB powered Built-in Attenuator Fast Bootup and Driverless The QA403 is a driverless USB device, meaning it’s ready as soon as you plug it in. The software is free and it is quick and easy to move the hardware from one machine to the next. So, if you need to head to the factory to troubleshoot a problem or take the QA403 home for a work-from-home day, you can do it without hassle. No-Cal Design The QA403 comes with a factory calibration in its flash memory, ensuring consistent unit-to-unit performance. On your manufacturing line you can install another QA403 and be confident what you read on one unit will be very similar to the next unit. It is not expected that re-calibration will be required at regular intervals. Measurements Making basic measurements is quick and easy. In a few clicks you will understand the frequency response, THD(+N), gain, SNR and more of your device-under test. Dynamic Range The QA403 offers 8 gain ranges on the input (0 to +42 dBV in 6 steps), and 4 gain ranges on the output (-12 to +18 dBV in 10 dB steps). This ensures consistent performance over very wide ranges of input and output levels. The maximum AC input to the QA403 is +32 dBV = 40 Vrms. The maximum DC is ±40 V, and the maximum ACPEAK + DC = ±56 V. Easy Programmability The QA403 supports a REST interface, making it easy to automate measurements in just about any language you might anticipate. From Python to C++ to Visual Basic—if you know how to load a web page in your favorite language, you can control the QA403 remotely. Measurements are fast and responsive, usually with dozens of commands being processed per second. Isolated and USB Powered The QA403 is isolated from the PC, meaning you are measuring your DUT and not chasing some phantom ground loop. The QA403 is USB powered, like nearly all our instruments. If you are setting up remotely, throw a powered hub in your bag and your entire test setup can be running with a minimum of cables. Goodbye Soundcard, Hello QA403 Tired of trying to make a soundcard work? The calibration nightmare? The lack of gain stages? The limited drive? Are you tired of dealing with the fixed input ranges? The worry that you might destroy it with too much DC or AC? Tired of the ground loops? That’s why QuantAsylum built the QA403. Specifications Dimensions 177 x 44 x 97 mm (W x H x D) Weight 435 g Case Material Powder-coating Aluminum (2 mm thick front panel, 1.6 mm thick top/bottom) Downloads Datasheet Manual GitHub

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The FNIRSI 1013D is a fully featured 2-channel tablet oscilloscope with a high-resolution 7-inch LCD screen (800 x 480 pixels). The oscilloscope has a real-time sampling rate of 1 GSa/s and an analog bandwidth of 100 MHz. With full trigger functions (single/normal/automatic), it can be used for periodic analog signals or non-periodic digital signals. The built-in high-voltage protection module can withstand a continuous voltage of up to 400 V. Features Intelligent anti-burn,1X can withstand up to 400 V withstand voltage. 100 MHz analog bandwidth @ 1 GSa/s sampling rate (1X = 5 MHz,10X = 100 MHz). Fully fit 7-inch 800 x 480 resolution color TFT LCD display with bright colors and high contrast. Capacitive touching screen, the same as the touching mode of modern mobile tablet, is not a resistive touching screen with ancient nail operation. High measurement voltage range, 1X can measure 0~40 V, 10X can measure 0~400 V,100X can measure 0~4000 V. Up to 12 parameters measurement: VPP, VP, Vmax, Vmin, Vavg, Vrms, Frequent, Duty+, Duty-, Time+, Time−, Period. Cursor measurement function, it is convenient to manually measure the period and frequency and voltage. Complete triggering function (single, normal, automatic). At any time, the waveform display (pause function) is frozen. Equipped with high efficiency One-button AUTO. One-button waveform storage and screenshot. Built-in 1 GB storage space, can store up to 1000 screenshots + 1000 sets of waveform data. Powerful waveform picture manager supports thumbnail browsing, viewing, detailed viewing, page turning, deletion and waveform zooming in, zooming out, moving, etc. Equipped with a USB interface, which can be connected to a computer to share its screenshots with the computer, which is convenient for secondary analysis. Lissajous figures graphic display function can be used to determine the amplitude, frequency, and phase contrast of two groups of signals. FFT display function, can analyze the spectral characteristics of the signal. Built-in 6000 mAh rechargeable lithium battery, fully charged for 4 hours of continuous use at the highest screen brightness. Memory compression technology, waveform refresh screen does not flicker. Screen brightness adjustment. Background grid brightness adjustment. Applications Electronic DIY Appliance repair Car repair Equipment debug Scientific research Product development Specifications Channels 2 LCD size 7 inch LCD resolution 800 x 480 Display technology TFT Bandwidth 100 Mhz Sampling rate 1 GSa/s Rise time <3nS Storage depth 240 Kbit Input resistance 1 MΩ Sensitivity 50 mV ~ 500 V Time base 50S ~ 10nS Trigger mode Single/Normal/Auto Trigger edge Rising/Falling Coupling AC/DC Highest test voltage 1X: 40 V, 10X: 400 V Cursor Position XY, Trigger Y Roll mode Yes One button AUTO Yes Waveform storage 1000 pictures + 1000 waveforms Waveform manager Yes Voltage accuracy ±2% Frequency precision ±0.01% high precision Parameter 12 kinds in total Battery 6000 mAh Lithium Standby 4 hours Extension USB export Power supply USB-C, 5 V @ 2 A/3 A/4 A Dimensions 184 x 124 x 50 mm Weight 650 g Included 1x FNIRSI 1013D 2-ch Tablet Oscilloscope 2x 100 MHz Probes (1X and 10X) 1x USB charger 1x USB cable 1x Manual Downloads Manual Firmware

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Program, build, and master over 50 projects with MicroPython and the RP2040 microprocessor The Raspberry Pi Pico is a high-performance microcontroller module designed especially for physical computing. Microcontrollers differ from single-board computers, like the Raspberry Pi 4, in not having an operating system. The Raspberry Pi Pico can be programmed to run a single task very efficiently within real-time control and monitoring applications requiring speed. The ‘Pico’ as we call it, is based on the fast, efficient, and low-cost dual-core ARM Cortex-M0+ RP2040 microcontroller chip running at up to 133 MHz and sporting 264 KB of SRAM, and 2 MB of Flash memory. Besides its large memory, the Pico has even more attractive features including a vast number of GPIO pins, and popular interface modules like ADC, SPI, I²C, UART, and PWM. To cap it all, the chip offers fast and accurate timing modules, a hardware debug interface, and an internal temperature sensor. The Raspberry Pi Pico is easily programmed using popular high-level languages such as MicroPython and or C/C++. This book is an introduction to using the Raspberry Pi Pico microcontroller in conjunction with the MicroPython programming language. The Thonny development environment (IDE) is used in all the projects described. There are over 50 working and tested projects in the book, covering the following topics: Installing the MicroPython on Raspberry Pi Pico using a Raspberry Pi or a PC Timer interrupts and external interrupts Analogue-to-digital converter (ADC) projects Using the internal temperature sensor and external temperature sensor chips Datalogging projects PWM, UART, I²C, and SPI projects Using Wi-Fi and apps to communicate with smartphones Using Bluetooth and apps to communicate with smartphones Digital-to-analogue converter (DAC) projects All projects given in the book have been fully tested and are working. Only basic programming and electronics experience is required to follow the projects. Brief descriptions, block diagrams, detailed circuit diagrams, and full MicroPython program listings are given for all projects described. Readers can find the program listings on the Elektor web page created to support the book.

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A Hands-on Guide to Crafting Your Own Power Plant The book you are about to read provides a step-by-step guide for building a renewable energy power plant at home. Our goal was to make the book as practical as possible. The material is intended for immediate application with a small amount of theory. Yet, the theory is important as a foundation that saves time and effort by disabusing the readers of potential misconceptions. Specifically, upon having a firm understanding of photovoltaic physics, you will not be inclined to fruitlessly search for 90% efficient solar panels! We want our readers to be the “doers”. If the book gets covered in grime and some pages become torn while you are building your power plant – this is the best compliment to us. The book covers solar and wind energy. Also, a curious power source based on manure is discussed as well, giving the doers an opportunity to further develop the manure fuel cell. It is important to note that there are many companies offering installation of complete solar solutions. Upon installing the panels, the system is not owned by the customer. Therefore, there is no freedom for experimentation and optimization. Also, none can beat the cost of a DIY solution as well as the ultimate satisfaction. All that is written here is a result of us building a renewable energy solution in Southern California. As the book was completed, the energy began flowing!

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The book "Node-RED and Raspberry Pi Pico W" describes the Node-RED programming environment in great detail with exciting applications on 527 pages. Only at Elektor, the book gets solid hardware support in the form of the popular SunFounder Kepler Kit with over 450 components including a Raspberry Pico W board. With this bundle, most of the experiments and programming exercises contained in the book can be carried out successfully. This bundle contains: Book: Node-Red and the Raspberry Pi Pico W (normal price: €50) SunFounder Kepler Kit voor Raspberry Pi Pico W (normal price: €70) Book: Node-RED and Raspberry Pi Pico W From basics to flows for sensors, automation, motors, MQTT, and cloud services This book is a learning guide and a reference. Use it to learn Node-RED, Raspberry Pi Pico W, and MicroPython, and add these state-of-the-art tools to your technology toolkit. It will introduce you to virtual machines, Docker, and MySQL in support of IoT projects based on Node-RED and the Raspberry Pi Pico W. This book combines several elements into a platform that powers the development of modern Internet of Things applications. These elements are a flow-based server, a WiFi-enabled microcontroller, a high-level programming language, and a deployment technology. Combining these elements gives you the tools you need to create automation systems at any scale. From home automation to industrial automation, this book will help you get started. Node-RED is an open-source flow-based development tool that makes it easy to wire together devices, APIs, and online services. Drag and drop nodes to create a flowchart that turns on your lights at sunset or sends you an email when a sensor detects movement. Raspberry Pi Pico W is a version of the Raspberry Pi Pico with added 802.11n Wi-Fi capability. It is an ideal device for physical computing tasks and an excellent match to the Node-RED. Quick book facts Project-based learning approach. Assumes no prior knowledge of flow-based programming tools. Learn to use essential infrastructure tools in your projects, such as virtual machines, Docker, MySQL and useful web APIs such as Google Sheets and OpenWeatherMap. Dozens of mini-projects supported by photographs, wiring schematics, and source code. Get these from the book GitHub repository. Step-by-step instructions on everything. All experiments are based on the Raspberry Pi Pico W. A Wi-Fi network is required for all projects. Downloads GitHub SunFounder Kepler Kit voor Raspberry Pi Pico W Your gateway to IoT and microcontroller programming With 450+ components and 117 online projects, this comprehensive kit ignites your creativity. The tutorials by Paul McWhorter make learning enjoyable for beginners and advanced users. This kit supports MicroPython, C/C++, and Piper Make, offering diverse programming options. Explore sensors, actuators, LEDs, and LCDs for endless project possibilities. From home automation to robotics, this kit empowers your tech journey. Features IoT Starter Kit for Beginners: This kit offers a rich IoT learning experience for beginners. With 450+ components, 117 projects, and expert-led video lessons, this kit makes learning microcontroller programming and IoT engaging and accessible. Expert-Guided Video Lessons: The kit includes 27 video tutorials by the renowned educator, Paul McWhorter. His engaging style simplifies complex concepts, ensuring an effective learning experience in microcontroller programming. Wide Range of Hardware: The kit includes a diverse array of components like sensors, actuators, LEDs, LCDs, and more, enabling you to experiment and create a variety of projects with the Raspberry Pi Pico W. Supports Multiple Languages: The kit offers versatility with support for three programming languages - MicroPython, C/C++, and Piper Make, providing a diverse programming learning experience. Dedicated Support: Benefit from our ongoing assistance, including a community forum and timely technical help for a seamless learning experience. Included Raspberry Pi Pico W Breadboard Jumper Wires Resistor Transistor Capacitor Diode Li-po Charger Module 74HC595 TA6586 – Motor Driver Chip LED RGB LED LED Bar Graph 7-segment Display 4-Digit 7-Segment Display LED Dot Matrix I²C LCD1602 WS2812 RGB 8 LEDs Strip Buzzer DC Motor Servo DC Water Pump Relay Button Micro Switch Slide Switch Potentiometer Infrared Receiver Joystick Module 4x4 Keypad MPR121 Module MFRC522 Module Photoresistor Thermistor Tilt Switch Reed Switch PIR Motion Sensor Module Water Level Sensor Module Ultrasonic Module DHT11 Humiture Sensor MPU6050 Module Documentation Online Tutorial

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Build Trust and Convert Buyers with Technical Content Research shows that this analytical, skeptical buyer conducts a great deal of independent research before engaging with vendors. Companies that share expertise through high-quality content on a consistent basis are not only seen as trusted resources, they also spend less per lead and achieve greater pipeline efficiency. Content Marketing, Engineered guides you through the key steps in creating content to inform, educate, and help your technical buyers on their journey to purchase and beyond. By the time you reach the last page, you’ll be familiar with the entire end-to-end content marketing process, from planning and writing to publishing, promoting, and measuring the performance of your content.

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Learn how to use the ESP32 Microcontroller and MicroPython programming in your future projects! The project book, written by well-known Elektor author Dogan Ibrahim, holds many software- and hardware-based projects especially developed for the MakePython ESP32 Development Kit. The kit comes with several LEDs, sensors, and actuators. The kit will help you acquire the basic knowledge to create IoT projects. The book’s fully evaluated projects feature all the supplied components. Each project includes a block diagram, a circuit diagram, a full program listing, and a complete program description. Included in the kit 1x MakePython ESP32 development board with color LCD 1x Ultrasonic ranging module 1x Temperature and humidity sensor 1x Buzzer module 1x DS18B20 module 1x Infrared module 1x Potentiometer 1x WS2812 module 1x Sound sensor 1x Vibration sensor 1x Photosensitive resistance module 1x Pulse sensor 1x Servo motor 1x USB cable 2x Button 2x Breadboard 45x Jumper wire 10x Resistor 330R 10x LED (Red) 10x LED (Green) 1x Project book (206 pages) 46 Projects in the Book LED Projects Blinking LED Flashing SOS Blinking LED – using a timer Alternately flashing LEDs Button control Changing the LED flashing rate using pushbutton interrupts Chasing-LEDs Binary-counting LEDs Christmas lights (random-flashing 8 LEDs) Electronic dice Lucky day of the week Pulsewidth Modulation (PWM) Projects Generate a 1000-Hz PWM waveform with 50% duty cycle LED brightness control Measuring the frequency and duty cycle of a PWM waveform Melody maker Simple electronic organ Servo motor control Servo motor DS18B20 thermometer Analog To Digital Converter (ADC) Projects Voltmeter Plotting the analog input voltage ESP32 internal temperature sensor Ohmmeter Photosensitive resistance module Digital To Analog Converter (DAC) Projects Generating fixed voltages Generating a sawtooth-wave signal Generating a triangular-wave signal Arbitrary periodic waveform Generating a sinewave signal Generating accurate sinewave signal using timer interrupts Using The OLED Display Seconds counter Event counter DS18B20 OLED based digital thermometer ON-OFF temperature controller Measuring the temperature and humidity Ultrasonic distance measurement Height of a person (stadiometer) Heart rate (pulse) measurement Other Sensors Supplied with the Kit Theft alarm Sound-activated light Infrared obstacle avoidance with buzzer WS2812 RGB LED ring Timestamping temperature and humidity readings Network Programming Wi-Fi scanner Remote control from the Internet browser (using a smartphone or PC) – Web Server Storing temperature and humidity data in the Cloud Low-Power Operation Using a timer to wake up the processor

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