From Rubbing Amber to Swiping Glass
"The story of electricity, told one connection at a time."Why does rubbing amber attract dust? How did we go from that curious effect to a world where screens respond to a single touch? And how did we get from mysterious sparks to tiny chips packed with billions of transistors?
For centuries, electricity puzzled and fascinated those who encountered its curious effects—long before it even had a name. From the earliest observations of static charge to the complex electronics that shape our lives today, this book traces the gradual, and often surprising, story of how humanity came to understand and harness this powerful force.
This book offers an engaging and accessible account of the people, ideas, and inventions that transformed electricity from a scientific curiosity into the foundation of our digital age. Along the way, you’ll meet a host of inquisitive minds—some famous, others less so—whose persistence and creativity helped unravel the mysteries of the natural world and gave rise to the technologies we now take for granted.
Covering everything from Leyden jars and batteries to transistors, microcontrollers and the internet, this book presents a clear and enjoyable overview of electronics and its relatively short, yet rich, history.
Whether you have a technical background or simply a curiosity about how things work, From Rubbing Amber to Swiping Glass offers a thoughtful look at how far we’ve come—and a gentle nudge to wonder what might come next.
A Reference and User Guide for the Arduino Mega 2560 Hardware and Firmware
A manual providing up-to-date hardware information for the Arduino Mega 2560.
The Arduino Mega 2560 is an upgrade to the popular Arduino Uno board, providing more pins, serial ports and memory. Arduino is the easy to use open-source electronics platform used by hobbyists, makers, hackers, experimenters, educators and professionals.
Get all the information that you need on the hardware and firmware found on Arduino Mega 2560 boards in this handy reference and user guide. Ideal for the workbench or desktop. This manual covers the Arduino Mega 2560 hardware and firmware, and is a companion volume to the Ultimate Arduino Uno Hardware Manual, which covers the Arduino Uno hardware and firmware.
Contains all of the Arduino Mega 2560 hardware information in one place
Covers Arduino / Genuino Mega 2560 revision 3 and earlier boards
Easily find hardware technical specifications with explanations
Pin reference chapter with interfacing examples
Diagrams and illustrations for easy reference to pin functions and hardware connections
Learn to back up and restore firmware on the board, or load new firmware
Basic fault finding and repair procedures for Arduino Mega 2560 boards
Power supply circuits simplified and explained
Mechanical dimensions split into five easy to reference diagrams
Contains circuit diagrams, parts list and board layout to easily locate components
A chapter on shield compatibility explains how shields work across different Arduino boards
A Beginner's Guide to AI and Edge Computing
Artificial Intelligence (AI) is now part of our daily lives. With companies developing low-cost AI-powered hardware into their products, it is now becoming a reality to purchase AI accelerator hardware at comparatively very low costs. One such hardware accelerator is the Hailo module which is fully compatible with the Raspberry Pi 5. The Raspberry Pi AI Kit is a cleverly designed hardware as it bundles an M.2-based Hailo-8L accelerator with the Raspberry Pi M.2 HAT+ to offer high speed inferencing on the Raspberry Pi 5. Using the Raspberry Pi AI Kit, you can build complex AI-based vision applications, running in real-time, such as object detection, pose estimation, instance segmentation, home automation, security, robotics, and many more neural network-based applications.
This book is an introduction to the Raspberry Pi AI Kit, and it is aimed to provide some help to readers who are new to the kit and wanting to run some simple AI-based visual models on their Raspberry Pi 5 computers. The book is not meant to cover the detailed process of model creation and compilation, which is done on an Ubuntu computer with massive disk space and 32 GB memory. Examples of pre-trained and custom object detection are given in the book.
Two fully tested and working projects are given in the book. The first project explains how a person can be detected and how an LED can be activated after the detection, and how the detection can be acknowledged by pressing an external button. The second project illustrates how a person can be detected, and how this information can be passed to a smart phone over a Wi-Fi link, as well as how the detection can be acknowledged by sending a message from the smartphone to your Raspberry Pi 5.
This book contains more than 400 simple electronic circuits which are developed and tested in practice by the authors. The technical solutions presented in the book are intended to stimulate the creative imagination of readers and broaden their area of thought. This should allow readers to look beyond the horizons of possibilities and use ordinary electronic items in a new way. This book includes new and original radio electronic multipurpose circuits. The chapters of the book are devoted to power electronics and measuring equipment and contain numerous original circuits of generators, amplifiers, filters, electronic switches based on thyristors and CMOS switch elements. Wired and wireless systems as well as security and safety systems are presented. Due to the high relevance and increased interest of readers in little-known or not readily available information, the different chapters of this book describe the use of electronic devices in industrial electronics and for research, as well as new instruments and equipment for medical use, gas-discharge and Kirlian photography. A number of technical devices presented in this book are related to research of the mysteries of the earth, nature and human beings by using radio electronic devices. This book will be useful for both radio amateurs and professionals.
Cool Projects for Test, Measurement, and Control
The Raspberry Pi has dominated the maker scene for many years. Freely accessible I/O pins have made it one of the most popular processor boards of all time. However, the classic Raspberry Pi has no analog inputs. Direct measurement of analog values is therefore not possible. Consequently, photodiodes, NTCs, Hall sensors, etc. cannot be read directly. In addition, the pins are connected directly to the exposed contacts, i.e. without a driver or protection circuit. This can quickly destroy the central controller and thus the entire Raspberry Pi.
These problems can be elegantly solved with the Pico. As a front-end, it can easily handle a wide range of measurement tasks. In addition, the Pico is much cheaper than a classic Raspberry Pi 4 or 5. If a faulty circuit leads to the destruction of the Pico, this is relatively easy to handle. This makes the combination of a classic Raspberry Pi 4 or 5 and the Pico an ideal pair.
The book introduces the broad and highly topical field of modern controller technology using the combined force of a Raspberry Pi 4 or 5 and a Raspberry Pi Pico. In addition to a detailed introduction to the operation and functionality of the controller boards themselves, the book also focuses on data acquisition and processing with digital processors. Especially the combination of both systems offers a wide range of interesting possibilities.
Some practical projects from the contents:
USB between Raspberry Pi 4 or 5 and Pico
I²C Communication and Pico as an I²C device
Voltmeter and Computer Thermometer
Pico W as a Web Server and WLAN Scanner
Frequency Meters and Generators
OLED Displays on Raspberry Pi 4 or 5 and Pico
Energy Saving Monitor
Which Astronauts are in Orbit?
Mini Monitor for Current Bitcoin Exchange Rate
Pixy2 can be taught to detect objects by the press of a button. It is equipped with a new line detection algorithm to use on line-following robots. It can learn to recognize intersection and follow road signs.
Pixy2 comes with various cables so that you can connect it with an Arduino or a Raspberry Pi out of the box. Furthermore, the I/O port offers several interfaces (SOI, I²C, UART, USB) to plug your Pixy2 in most boards.
Downloads
Documentation
Projects
Software
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
Bring your projects to life with this multifunctional precision drill, engineered for a wide range of applications including cutting, drilling, engraving, polishing, and more. Powered by a robust 135 W motor, it offers variable speed control with an impressive range of 10,000 to 32,000 rpm – ensuring precise and consistent performance across various materials and tasks.
The drill comes in a convenient carry case with a comprehensive 162-piece accessory set, providing the right tool for every job and enabling seamless transitions between different applications. Whether you're a hobbyist or a professional, this versatile tool delivers the power, control, and reliability you need for high-quality craftsmanship.
Multifunctional Versatility
This all-in-one precision drill comes with 162 accessories, making it perfect for a wide range of applications – from cutting and drilling to engraving and polishing. Effortlessly switch between projects and stay prepared for any task.
Powerful Performance
Featuring a 135 W motor and a variable speed range from 10,000 to 32,000 rpm, this drill delivers consistent, high-performance output. It ensures accuracy and efficiency, even for the most demanding jobs.
Comprehensive Accessory Set
Whether you're a dedicated hobbyist or a professional, the included accessories provide everything you need to get the job done right. Enjoy maximum flexibility and convenience in one complete package.
Ergonomic, User-Friendly Design
Designed for comfort and ease of use, the drill features intuitive controls and an ergonomic grip. It fits comfortably in your hand, allowing for precise work—even during extended use.
Built to Last
Crafted from high-quality materials, this precision drill is built for durability and long-term reliability. Whether you're just starting out or are an experienced maker, this tool is made to deliver outstanding results again and again. Let me know if you'd like a more technical, casual, or sales-focused version too!
Included
1x Electric drill (10000-32000 rpm with on/off switch)
1x Flexible shaft (ideal attachment for precise, detailed work or hard to reach places)
1x Collet nut
4x Collets
10x Diamond wheel points
5x Fiberglass cutting disc
62x Cut-off wheels
1x Rubber polishing disc
2x Sanding drums
22x Sanding bands
1x Sanding flap wheel
12x Polishing stones
9x Wire brushes
7x Polishing felts
1x Silicon carbide grindstone
10x Grinding discs
4x Mandrels
2x Polishing compound
6x Drills (2x 1.5 mm, 2x 2.3 mm, 2x 3.1 mm)
1x Tool
Downloads
Manual
Clever Tricks with ATmega328 Pro Mini Boards
With a simple Pro Mini board and a few other components, projects that 20 or 30 years ago were unthinkable (or would have cost a small fortune) are realized easily and affordably in this book: From simple LED effects to a full battery charging and testing station that will put a rechargeable through its paces, there’s something for everyone.
All the projects are based on the ATmega328 microcontroller, which offers endless measuring, switching, and control options with its 20 input and output lines. For example, with a 7-segment display and a few resistors, you can build a voltmeter or an NTC-based thermometer. The Arduino platform offers the perfect development environment for programming this range of boards.
Besides these very practical projects, the book also provides the necessary knowledge for you to create projects based on your own ideas. How to measure, and what? Which transistor is suitable for switching a certain load? When is it better to use an IC? How do you switch mains voltage? Even LilyPad-based battery-operated projects are discussed in detail, as well as many different motors, from simple DC motors to stepper motors.
Sensors are another exciting topic: For example, a simple infrared receiver that can give disused remote controls a new lease on life controlling your home, and a tiny component that can actually measure the difference in air pressure between floor and table height!
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!
The antenna allows for reception of L-band satellites that transmit between 1525-1660 MHz, such as Inmarsat, Iridium and GPS. Please note it is NOT for receiving weaker signals like HRPT and GOES which require a dish antenna.
The patch comes with useful mounting accessories including a window suction cup, bendable tripod and 3M RG174 coax cable. The patch and active circuitry is enclosed in a weather proof enclosure.
Links
Inmarsat STD-C EGC
AERO Satellite ACARS
AERO C-Channel Voice
Iridium Decoding
GPS and GNSS Experiments
Based on direct thermal technology, the Niimbot D110 label printer offers a printing experience without ink, toner or ribbons, making it a cost-effective solution compared to traditional printers. Its compact size and light weight make it easy to transport and fits easily into any pocket.
With Bluetooth connectivity and a built-in 1500 mAh battery, this wireless mini printer allows you to print from up to 10 meters away, giving you flexibility on the go, whether you're printing from your smartphone or tablet.
The "Niimbot" app (available for iOS and Android) offers a variety of free templates for customizing labels.
Specifications
Model
D110_M (Upgraded Version 2024)
Material
ABS
Resolution
203 DPI
Printing speed
30-60 mm/s
Print width
12-15 mm
Printing technology
Thermal
Operating temperature
5°C ~ 45°C (41°F ~ 113°F)
Battery capacity
1500 mAh
Charging interface
USB-C
Charging time
2 hours
Connection
Bluetooth 4.0
Wireless distance
10 m
Dimensions
98 x 76 x 30 mm
Weight
149 g
Included
1x Niimbot D110 Label Printer
1x Label tape (12 x 40 mm)
1x USB cable
1x Manual
Downloads
iOS App
Android App
The ZY-204 is a versatile solderless breadboard with a total of 1660 tie points, perfect for building and testing electronic circuits without soldering.
It includes 2 terminal strips with 1260 tie-points and 4 distribution strips with 400 tie-points, providing ample space for complex circuit designs. 3 binding posts allow for easy connection to external power supplies.
Features
2 Terminal Strips 1260 Tie-points
4 Distribution Strips 400 Tie-points
3 Binding Posts
Black aluminum plate
Colored coordinates for easy component placement
Dimensions: 215 x 130 mm
Sound Secrets and Technology
What would today’s rock and pop music be without electric lead and bass guitars? These instruments have been setting the tone for more than sixty years. Their underlying sound is determined largely by their electrical components. But, how do they actually work? Almost no one is able to explain this to the true musician with no technical background. This book answers many questions simply, in an easily-understandable manner.
For the interested musician (and others), this book unveils, in a simple and well-grounded way, what have, until now, been regarded as manufacturer secrets. The examination explores deep within the guitar, including pickups and electrical environment, so that guitar electronics are no longer considered highly secret. With a few deft interventions, many instruments can be rendered more versatile and made to sound a lot better – in the most cost-effective manner.
The author is an experienced electronics professional and active musician. He has thoroughly tested everything described here, in practice.
35 Touch Develop & MicroPython Projects
The BBC micro:bit is a credit sized computer based on a highly popular and high performance ARM processor. The device is designed by a group of 29 partners for use in computer education in the UK and will be given free of charge to every secondary school student in the UK.
The device is based on the Cortex-M0 processor and it measures 4 x 5 cm. It includes several important sensors and modules such as an accelerometer, magnetometer, 25 LEDs, 2 programmable push-button switches, Bluetooth connectivity, micro USB socket, 5 ring type connectors, and a 23-pin edge connector. The device can be powered from its micro USB port by connecting it to a PC, or two external AAA type batteries can be used.
This book is about the use of the BBC micro:bit computer in practical projects. The BBC micro:bit computer can be programmed using several different programming languages, such as Microsoft Block Editor, Microsoft Touch Develop, MicroPython, and JavaScript.
The book makes a brief introduction to the Touch Develop programming language and the MicroPython programming language. It then gives 35 example working and tested projects using these language. Readers who learn to program in Touch Develop and MicroPython should find it very easy to program using the Block Editor or any other languages.
The following are given for each project:
Title of the project
Description of the project
Aim of the project
Touch Develop and MicroPython program listings
Complete program listings are given for each project. In addition, working principles of the projects are described briefly in each section. Readers are encouraged to go through the projects in the order given in the book.
Create lightning with the touch of your fingers or the clap of your hands
The Plasma Magic Ball is a cutting-edge tech gadget and an eye-catching piece of art. Inside the glass sphere, a special gas mixture creates mesmerizing light effects when activated by high-frequency current – like holding a storm in your hands.
Perfect for use at home, in the office, schools, hotels, or bars, it’s a unique decorative element that sparks curiosity. Looking for a fun and unusual gift? The Plasma Magic Ball is a great choice for friends and family alike.
Despite its stunning effects, the Plasma Magic Ball uses very little electricity. The glass itself is made of specially hardened, high-strength material and can withstand temperatures of up to 522°C (972°F).
Specifications
Material
Plastic
Ball diameter
6 inch (15 cm)
Input voltage
220 V
Output voltage
12 V
Power
15 W
Dimensions
25 x 15.5 x 15.5 cm
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
Create Models for 3D Printing, CNC Milling, Process Communication and Documentation
Engineers dread designing 3D models using traditional modeling software. OpenSCAD takes a refreshing and completely different approach. Create your models by arranging geometric solids in a JavaScript-like language, and use them with your 3D printer, CNC mill, or process communication.
OpenSCAD differs from other design systems in that it uses programmatical modeling. Your model is made up of primitives that are invoked using a C-, Java- or Python-like language. This approach to model design is close to the “mechanical work” done in the real world and appeals to engineers and others who are not a member of the traditional creative class.
OpenSCAD also provides a wide variety of comfort functions that break the 1:1 relationship between code and geometry. This book demonstrates the various features of the programming language using practical examples such as a replacement knob for a LeCroy oscilloscope, a wardrobe hanger, a container for soap dispensers, and various other real-life examples.
Written by an engineer with over 15 years of experience, this book is intended for Linux and Windows users alike. If you have programming experience in any language, this book will have you producing practical three-dimensional objects in short order!
Program and build Arduino-based ham station utilities, tools, and instruments
In addition to a detailed introduction to the exciting world of the Arduino microcontroller and its many variants, this book introduces you to the shields, modules, and components you can connect to the Arduino. Many of these components are discussed in detail and used in the projects included in this book to help you understand how these components can be incorporated into your own Arduino projects. Emphasis has been placed on designing and creating a wide range of amateur radio-related projects that can easily be built in just a few days.
This book is written for ham radio operators and Arduino enthusiasts of all skill levels, and includes discussions about the tools, construction methods, and troubleshooting techniques used in creating amateur radio-related Arduino projects. The book teaches you how to create feature-rich Arduino-based projects, with the goal of helping you to advance beyond this book, and design and build your own ham radio Arduino projects.
In addition, this book describes in detail the design, construction, programming, and operation of the following projects:
CW Beacon and Foxhunt Keyer
Mini Weather Station
RF Probe with LED Bar Graph
DTMF Tone Encoder
DTMF Tone Decoder
Waveform Generator
Auto Power On/Off
Bluetooth CW Keyer
Station Power Monitor
AC Current Monitor
This book assumes a basic knowledge of electronics and circuit construction. Basic knowledge of how to program the Arduino using its IDE will also be beneficial.
NRF24L01 is a universal ISM band monolithic transceiver chip works in the 2.4-2.5 GHz. Features Wireless transceiver including: Frequency generator, enhanced type, SchockBurstTM, mode controller, power amplifier, crystal amplifier, modulator, demodulator The output power channel selection and protocol settings can be set extremely low current consumption, through the SPI interface As the transmit mode, the transmit power is 6 dBm, the current is 9.0 mA, the accepted mode current is 12.3 mA, the current consumption of the power-down mode and standby mode are lower Built-in 2.4 GHz antenna, supports up to six channels of data reception Size: 15 x 29 mm (including antenna)
3rd Edition – Fully updated for Raspberry Pi 4
The Raspberry Pi is a very cheap but complete computer system that allows all sorts of electronics parts and extensions to be connected. This book addresses one of the strongest aspects of the Raspberry Pi: the ability to combine hands-on electronics and programming.
Combine hands-on electronics and programming
After a short introduction to the Raspberry Pi you proceed with installing the required software. The SD card that can be purchased in conjunction with this book contains everything to get started with the Raspberry Pi. At the side of the (optional) Windows PC, software is used which is free for downloading. The book continues with a concise introduction to the Linux operating system, after which you start programming in Bash, Python 3 and Javascript. Although the emphasis is on Python, the coverage is brief and to the point in all cases – just enabling you to grasp the essence of all projects and start adapting them to your requirements. All set, you can carry on with fun projects.
The book is ideal for self-study
No fewer than 45 exciting and compelling projects are discussed and elaborated in detail. From a flashing lights to driving an electromotor; from processing and generating analog signals to a lux meter and a temperature control. We also move to more complex projects like a motor speed controller, a web server with CGI, client-server applications and Xwindows programs.
Each project has details of the way it got designed that way
The process of reading, building, and programming not only provides insight into the Raspberry Pi, Python, and the electronic parts used, but also enables you to modify or extend the projects any way you like. Also, feel free to combine several projects into a larger design.
Functionality, structure and handling of a power module
For readers with first steps in power management the “Abc of Power Modules” contains the basic principles necessary for the selection and use of a power module. The book describes the technical relationships and parameters related to power modules and the basis for calculation and measurement techniques.
Contents
Basics
This chapter describes the need of a DC/DC voltage converter and its basic functionality. Furthermore, various possibilities for realizing a voltage regulator are presented and the essential advantages of a power module are mentioned.
Circuit topologies
Circuit concepts, buck and boost topologies very frequently used with power modules are explained in detail and further circuit topologies are introduced.
Technology, construction and regulation technology
The mechanical construction of a power module is presented, which has a significant influence on EMC and thermal performance. Furthermore, control methods are explained and circuit design tips are provided in this chapter.
Measuring methods
Meaningful measurement results are absolutely necessary to assess a power module. The relevant measurement points and measurement methods are described in this chapter.
Handling
The aspects of storage and handling of power modules are explained, as well as their manufacturing and soldering processes.
Selection of a power modules
Important parameters and criteria for the optimal selection of a power module are presented in this section.
YARD Stick One (Yet Another Radio Dongle) is a sub-1 GHz wireless transceiver IC on a USB dongle. It is based on the Texas Instruments CC1111.
YARD Stick One can transmit or receive digital wireless signals at frequencies below 1 GHz. It uses the same radio circuit as the popular IM-Me. The radio functions that are possible by customizing IM-Me firmware are now at your fingertips when you attach YARD Stick One to a computer via USB.
Features
Half-duplex transmit and receive
Official operating frequencies: 300-348 MHz, 391-464 MHz, and 782-928 MHz
Unofficial operating frequencies: 281-361 MHz, 378-481 MHz, and 749-962 MHz
Modulations: ASK, OOK, GFSK, 2-FSK, 4-FSK, MSK
Data rates up to 500 kbps
Full-Speed USB 2.0
SMA female antenna connector (50 ohms)
Software-controlled antenna port power (max 50 mA at 3.3 V)
Low pass filter for elimination of harmonics when operating in the 800 and 900 MHz bands
GoodFET-compatible expansion and programming header
GIMME-compatible programming test points
Open source
Downloads
Documentation
GitHub
An assortment of coloured wires: you know it's a beautiful thing. Six different colours of stranded wire in a cardboard dispenser box. Sit this on your workbench, and stop worrying about having a piece of wire around!
Included
22 AWG
25 ft / Spool
6 Spools in Six Different Colors
Colours are Red, Blue, Yellow, Green, Black, and White
Dispenser Box