Bestsellers

Specifications RP2040 microcontroller chip designed by Raspberry Pi in the UK Dual-core ARM Cortex M0+ processor, with a flexible clock running up to 133 MHz 264 kB SRAM, and 2 MB on-board Flash memory Castellated module allows soldering directly to carrier boards USB 1.1 host and device support Energy-efficient sleep and dormant modes Drag and drop programming using mass storage via USB 26x multifunction GPIO pins 2x SPI, 2x I²C, 2x UART, 3x 12-bit ADC, 16x controllable PWM channels On-chip accurate clock and timer Temperature sensor On-chip accelerated floating point libraries 8x programmable IO (PIO) state machines for custom peripherals Why a Raspberry Pi Pico? Designing your own microcontroller instead of buying an existing one brings a number of advantages. According to Raspberry Pi itself, not one of the existing products available for this comes close to their price/performance ratio. This Raspberry Pi Pico has also given Raspberry Pi the ability to add some innovative and powerful features of their own. These features are not available anywhere else. A third reason is that the Raspberry Pi Pico has given Raspberry Pi the ability to create powerful software around the product. Surrounding this software stack is an extensive documentation set. The software and documentation meet the high standard of Raspberry Pi's core products (such as the Raspberry Pi 400, Pi 4 Model B and Pi 3 Model A+). Who is this microcontroller for? The Raspberry Pi Pico is suitable for both advanced and novice users. From controlling a display to controlling many different devices that you use every day. Automating everyday operations is made possible by this technology. Beginner users The Raspberry Pi Pico is programmable in the C and MicroPython languages and is customizable for a wide range of devices. In addition, the Pico is as easy to use as dragging and dropping files. This makes this microcontroller ideally suited for the novice user. Advanced users For advanced users, it is possible to take advantage of the Pico's extensive peripherals. The peripherals include the SPI, I²C, and eight programmable I/O (PIO)-state machines. What makes the Raspberry Pi Pico unique? What's unique about the Pico is that it was developed by Raspberry Pi itself. The RP2040 features a dual-core Arm Cortex-M0+ processor with 264 KB of internal RAM and support for up to 16 MB of off-chip Flash. The Raspberry Pi Pico is unique for several reasons: The product has the highest price/quality ratio in the microcontroller board market. The Raspberry Pi Pico has been developed by Raspberry Pi itself. The software stack surrounding this product is of high quality and comes paired with a comprehensive documentation set.

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This e-book contains a selection of Raspberry Pi articles published in Elektor Magazine between May 2016 and May 2018 and packs them into one convenient PDF document. This 155-page compilation is crammed with ideas, tips, URLs, comments, tweaks, software, hardware, diagrams, explanations, programs, PCB layouts and much more. Guaranteed to be an entertaining and stimulating read, it will keep you, and your RPi occupied for days!

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Raspberry Pi 4 B is the best Raspberry Pi ever! The Raspberry Pi 4 B sets another milestone in processor speed and performance of single-board computers. Raspberry Pi4 B is 3x faster than its 3 B+ predecessor and offers 4x faster multimedia performance (comparable to the desktop performance of an entry-level x86-based PC). Features High-performance 64-bit quad-core processor Dual-display support at resolutions up to 4K via a pair of micro-HDMI ports Hardware video decode at up to 4Kp60 Up to 8 GB of RAM Dual-band 2.4/5 GHz wireless LAN Bluetooth 5.0 Gigabit Ethernet USB 3.0 PoE capability (via a separate PoE HAT add-on) Specifications SoC Broadcom BCM2711 CPU 64-bit ARM Cortex-A72 (4x 1.5 GHz) GPU Broadcom VideoCore VI RAM Up to 8 GB LPDDR4 Wireless LAN 2.4 GHz and 5 GHz IEEE 802.11b/g/n/ac wireless LAN Bluetooth Bluetooth 5.0, BLE Ethernet Gigabit Ethernet USB 2x USB-A 3.02x USB-A 2.0 GPIO Standard 40-pin GPIO header (fully backwards-compatible with previous boards) Video 2x micro-HDMI ports (up to 4Kp60 supported)2-lane MIPI DSI port (display)2-lane MIPI CSI port (camera) Audio 4-pole stereo audio and composite video port Multimedia H.265 (4Kp60 decode)H.264 (1080p60 decode, 1080p30 encode)OpenGL ES, 3.0 graphics SD card microSD (for operating system and storage) Power 5 V | 3 A (via USB-C)5 V | 3 A (via GPIO)Power over Ethernet (PoE) enabled – (requires separate PoE HAT) Raspberry Pi 4 B 1 GB RAM 2 GB RAM 8 GB RAM

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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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RTL-SDR is an affordable dongle that can be used as a computer based radio scanner for receiving live radio signals in your area. This particular dongle includes a R820T2 tuner, a 1 PPM temperature compensated oscillator (TCXO), SMA F connector. It features an aluminium case with passive cooling via a thermal pad. Moreover, there is a software switchable bias tee circuit, supplementary ESD protection, lower overall noise and built-in direct sampling for HF reception. This device can receive frequencies from 500 kHz to 1.7 GHz and has up to 3.2 MHz of instantaneous bandwidth (2.4 MHz stable). Note: RTL-SDR dongles are RX only. You can use this kit either for terrestrial or satellite reception just by changing the orientation of the antenna. Thanks to the included mounts and extension cables it is possible to temporarily place the antenna outside for a better reception. Other potential applications are general radio scanning, air traffic control, public safety radio, ADSB, ACARS, trunked radio, P25 digital voice, POCSAG, weather balloons, APRS, NOAA APT weather satellites, radio astronomy, meteor scatter monitoring etc. Included RTL-SDR V3 Dongle (R820T2 RTL2832U 1PPM TCXO SMA) 2x 23 cm to 1 m telescopic antenna 2x 5 cm to 13 cm telescopic antenna Dipole Antenna Base with 60 cm RG174 extension cable 3 m RG174 extension cable Flexible Tripod Mount Suction Cup Mount Downloads Quick Start Guide SDR# User Guide Dipole Antenna Kit Guide

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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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Raspberry Pi 4 B is the best Raspberry Pi ever! The Raspberry Pi 4 B sets another milestone in processor speed and performance of single-board computers. Raspberry Pi 4 B is 3x faster than its 3 B+ predecessor and offers 4x faster multimedia performance (comparable to the desktop performance of an entry-level x86-based PC). Features High-performance 64-bit quad-core processor Dual-display support at resolutions up to 4K via a pair of micro-HDMI ports Hardware video decode at up to 4Kp60 Up to 8 GB of RAM Dual-band 2.4/5 GHz wireless LAN Bluetooth 5.0 Gigabit Ethernet USB 3.0 PoE capability (via a separate PoE HAT add-on) Specifications SoC Broadcom BCM2711 CPU 64-bit ARM Cortex-A72 (4x 1.5 GHz) GPU Broadcom VideoCore VI RAM Up to 8 GB LPDDR4 Wireless LAN 2.4 GHz and 5 GHz IEEE 802.11b/g/n/ac wireless LAN Bluetooth Bluetooth 5.0, BLE Ethernet Gigabit Ethernet USB 2x USB-A 3.02x USB-A 2.0 GPIO Standard 40-pin GPIO header (fully backwards-compatible with previous boards) Video 2x micro-HDMI ports (up to 4Kp60 supported)2-lane MIPI DSI port (display)2-lane MIPI CSI port (camera) Audio 4-pole stereo audio and composite video port Multimedia H.265 (4Kp60 decode)H.264 (1080p60 decode, 1080p30 encode)OpenGL ES, 3.0 graphics SD card microSD (for operating system and storage) Power 5 V | 3 A (via USB-C)5 V | 3 A (via GPIO)Power over Ethernet (PoE) enabled – (requires separate PoE HAT) Raspberry Pi 4 B 1 GB RAM 2 GB RAM 4 GB RAM

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DSO-TC3 combines a digital oscilloscope, electronic component tester, signal generator, continuity test, voltage test, temperature and humidity measurement, infrared decoding and other functions are skillfully integrated. It is equipped with a 2.4' color TFT display and a built-in rechargeable lithium battery for mobile use. Specifications (Oscilloscope) The oscilloscope has a real-time sampling rate of 10 MSa/s and a bandwidth of 500 kHz. With complete trigger function (single, normal, automatic), no matter if you’re using periodic analog signals or non-periodic digital signals. Maximum measured voltage signal is 400 V. Equipped with efficient AUTO, the measured waveform can be displayed without cumbersome adjustments. Real-time sample rate 10 MSa/s Bandwidth 500 khz Input resistance 1 MΩ Coupling method AC/DC Test voltage range 400 V Vertical Sensitivity (x1) 10 mV-10 V Horizontal time base range 1us-10s Trigger mode Auto/Normal/Single Trigger type Rising edge/Falling edge Waveform Freeze Yes Automatic measurement Yes Specifications (Component Tester) The instrument can automatically identify and measure various transistors, including NPN and PNP triodes, N-channel and P-channel mosfet, junction mosfet, diodes, dual diodes, thyristors, and resistors, inductors, capacitors and other passive components. Automatic detection of pin definition. Automatically analyze NEC protocol infrared code. Other functional modes: Including circuit continuity test, 0-40 V input voltage measurement, PWM output, 0-32 V regulated diode measurement, DS18B20 temperature sensor measurement, DHT11 temperature and humidity sensor measurement, etc. Specifications (Signal Generator) The signal generator has a total of 6 waveforms to choose from, with adjustable frequency and amplitude. Sine wave 1-100 KHz/0-3.3 V/50% Square wave 1-100 KHz/3.3 V/50% Pulse wave 1-100 KHz/3.3 V/0-100% Triangle wave 1-100 KHz/0-3.3 V/50% Ramp 1-100 KHz/0-3.3 V/0-100% DC 0-3.3 V Included 1x DSO-TC3 1x P6100 Oscilloscope Probe (100 MHz) 3x Test Hooks 1x Adapter 1x USB-C Cable 1x Original Manual by FNIRSI (English, Chinese, Russian, Portuguese) 1x Elektor Manual (English, French, German, Italian, Dutch) Downloads Original Manual Firmware v0.3

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The Arduino Uno is an open-source microcontroller development system encompassing hardware, an Integrated Development Environment (IDE), and a vast number of libraries. It is supported by an enormous community of programmers, electronic engineers, enthusiasts, and academics. The libraries in particular really smooth Arduino programming and reduce programming time. What’s more, the libraries greatly facilitate testing your programs since most come fully tested and working. The Raspberry Pi 4 can be used in many applications such as audio and video media devices. It also works in industrial controllers, robotics, games, and in many domestic and commercial applications. The Raspberry Pi 4 also offers Wi-Fi and Bluetooth capability which makes it great for remote and Internet-based control and monitoring applications. This book is about using both the Raspberry Pi 4 and the Arduino Uno in PID-based automatic control applications. The book starts with basic theory of the control systems and feedback control. Working and tested projects are given for controlling real-life systems using PID controllers. The open-loop step time response, tuning the PID parameters, and the closed-loop time response of the developed systems are discussed together with the block diagrams, circuit diagrams, PID controller algorithms, and the full program listings for both the Raspberry Pi and the Arduino Uno. The projects given in the book aim to teach the theory and applications of PID controllers and can be modified easily as desired for other applications. The projects given for the Raspberry Pi 4 should work with all other models of Raspberry Pi family. The book covers the following topics: Open-loop and closed-loop control systems Analog and digital sensors Transfer functions and continuous-time systems First-order and second-order system time responses Discrete-time digital systems Continuous-time PID controllers Discrete-time PID controllers ON-OFF temperature control with Raspberry Pi and Arduino Uno PID-based temperature control with Raspberry Pi and Arduino Uno PID-based DC motor control with Raspberry Pi and Arduino Uno PID-based water level control with Raspberry Pi and Arduino Uno PID-based LED-LDR brightness control with Raspberry Pi and Arduino Uno

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LCR/ESR Meter, Multimeter, SMD Tester with built-in Micro Signal Generator The Miniware DT71 digital tweezers are a truly 'smart' buy for pro engineers and makers alike. The compact DT71 has a unique trinary structure which can be separated into the controller, testing arms, and tweezer tips. You can use the DT71 to take measurements and to automatically identify SMD components such as resistors, capacitors, and diodes. Highlights DT71 Mini Digital Tweezers is a tool for multi-function measurements with full differential input measurement. DT71 has a unique trinary structure, which can be separated into the controller, testing arms, and tweezer tips, flexible to be replaced and combined. It is compact and pocket-size for easy carrying. You can use it in laboratories, workbenches, warehouses, and in the field. It also has dual built-in rechargeable lithium batteries that can last 10 hours at a stretch with a single full charge that takes about 2 hours to charge. DT71 Mini Digital Tweezers have an OLED screen on the 360° rotatable controller, providing visibility at all angles. Smart gesture recognition will automatically identify left/right-hand operation and adjust screen display. It has various measurement types to fulfill all your needs. The test arms of DT71 Mini Digital Tweezers use magnetic elasticity to provide an easy clipping, ergonomic, and long-lasting structure. DT71 Mini Digital Tweezers features a pair of beautiful intensified gold-plated interchangeable tweezer tips, which enables higher measuring accuracy. DT71 Mini Digital Tweezers have manual and automatic Identification modes. In auto mode, DT71 can automatically identify SMDs including resistor, capacitor, inductor, and diode, showing both main and secondary parameters, very useful in fast distinguishing different components. Meanwhile, a built-in miniature waveform signal generator can output a variety of waveform signals. DT71 provides a perfect solution for debugging and maintenance of complex electronic systems and the classification and detection of discrete chip components. Different from other LCR testers, DT71 Mini Digital Tweezers have no physical buttons, instead, it has a hidden touch button on top of the controller, which makes it easy to operate with only a light touch. DT71 Mini Digital Tweezers has intelligent functions such as Automatic identification, Automatic shutdown, and also the firmware can be upgraded. Features Innovative trinary structure: separated into the controller, testing arms, and tweezer tips, which are flexible to be replaced and combined. 360° rotatable controller with OLED screen, with good viewing angles. Smart gesture recognition with automatic identification of left/right-hand operation and adjusting the screen orientation accordingly. Hidden touch button on top of the controller, which makes it easy to operate with only a light touch. Test arms use magnetic elasticity to provide an easy clipping, ergonomic, and long-lasting structure. Built-in dual lithium batteries in test arms, balancing both arms and providing a longer standby time. Several kinds of gold-plated interchangeable tweezer tips, enabling higher measurement accuracy in various usages. Automatically identify SMDs including resistor, capacitor, inductor, and diode, showing both main and secondary parameters. A built-in signal generator can output a variety of waveform signals. Specifications Product Specifications Operation time 10 hrs (in continuous operation) Charging time 2 hrs Display 96 x 16 OLED Size Controller 47 mm Test Arms 106 mm Weight 22 g Operation Hidden touch button Measurement Specifications Range Resolution Accuracy Resistance 0.1 Ω~1 KΩ 0.1 Ω 0.5%+2 1 KΩ~2000 KΩ 1 KΩ 0.5%+2 Capacitance 0.1 pF~1000 pF 0.1 pF 2%+3 0.001uF~400 uF 0.001 uF 2%+3 Inductance 1 uH~1000 uH 1 uH 5%+3 1 mH~50 mH 1 mH 5%+3 Voltage 1 mV~100 mV 1 mV 2%+5 0.1 V~40 V 0.1 V 1%+3 Frequency 10 Hz~1 KHz 10 Hz 0.1%+3 1 KHz~20000 KHz 1 KHz 0.1%+3 Diode Silicon diodes, Schottky diodes, LEDs (+0.1~3V) 0.1 V 1% Max input voltage -5 V~+50 V Source Impedance 1 MΩ Functions Automatic Identification Yes Designated Measurements Yes Continuity and Diode testing Yes Signal Generator SINE 10 KHz, 5 KHz, 2 KHz, 1 Khz, 500 Hz, 200 Hz NOISE 100 KHz USER 10 KHz, 5 KHz, 2 KHz, 1 Khz, 500 Hz, 200 Hz PULSE 100 KHz, 0 KHz, 20 Khz, 10 KHz, 5 KHz, 2 KHz, 1 Khz, 500 Hz, 200 Hz Included 1x DT71 Digital Tweezers 1x Test Arms 2x Tweezer Tips 1x Data Cable 1x Carrying Case 1x Safety Instructions Downloads User Manual v1.3 Firmware v1.15 Calibration v2.0

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Raspberry Pi 4 B is the best Raspberry Pi ever! The Raspberry Pi 4 B sets another milestone in processor speed and performance of single-board computers. Raspberry Pi 4 B is 3x faster than its 3 B+ predecessor and offers 4x faster multimedia performance (comparable to the desktop performance of an entry-level x86-based PC). Features High-performance 64-bit quad-core processor Dual-display support at resolutions up to 4K via a pair of micro-HDMI ports Hardware video decode at up to 4Kp60 Up to 8 GB of RAM Dual-band 2.4/5 GHz wireless LAN Bluetooth 5.0 Gigabit Ethernet USB 3.0 PoE capability (via a separate PoE HAT add-on) Specifications SoC Broadcom BCM2711 CPU 64-bit ARM Cortex-A72 (4x 1.5 GHz) GPU Broadcom VideoCore VI RAM Up to 8 GB LPDDR4 Wireless LAN 2.4 GHz and 5 GHz IEEE 802.11b/g/n/ac wireless LAN Bluetooth Bluetooth 5.0, BLE Ethernet Gigabit Ethernet USB 2x USB-A 3.02x USB-A 2.0 GPIO Standard 40-pin GPIO header (fully backwards-compatible with previous boards) Video 2x micro-HDMI ports (up to 4Kp60 supported)2-lane MIPI DSI port (display)2-lane MIPI CSI port (camera) Audio 4-pole stereo audio and composite video port Multimedia H.265 (4Kp60 decode)H.264 (1080p60 decode, 1080p30 encode)OpenGL ES, 3.0 graphics SD card microSD (for operating system and storage) Power 5 V | 3 A (via USB-C)5 V | 3 A (via GPIO)Power over Ethernet (PoE) enabled – (requires separate PoE HAT) Raspberry Pi 4 B 1 GB RAM 4 GB RAM 8 GB RAM

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HackRF One is a Software Defined Radio (SDR) peripheral capable of transmission or reception of radio signals from 1 MHz to 6 GHz. Designed to enable test and development of modern and next generation radio technologies, HackRF One is an open source hardware platform that can be used as a USB peripheral or programmed for stand-alone operation. Specifications 1 MHz to 6 GHz operating frequency Half-duplex transceiver Up to 20 million samples per second 8-bit quadrature samples (8-bit I and 8-bit Q) Compatible with GNU Radio, SDR and more Software-configurable RX and TX gain and baseband filter Software-controlled antenna port power (50 mA at 3.3 V) SMA female antenna connector SMA female clock input and output for synchronization Convenient buttons for programming Internal pin headers for expansion Hi-Speed USB 2.0 USB-powered Open source hardware HackRF One is test equipment for RF systems. It has not been tested for compliance with regulations governing transmission of radio signals. You are responsible for using your HackRF One legally. Included 1x HackRF One 1x Injection molded plastic enclosure 1x micro-USB cable Note: An antenna is not included. ANT500 is recommended as a starter antenna for HackRF One. Documentation/Software Documentation GitHub Source code and hardware design files

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The small Raspberry Pi puts in the quad-core turbo! Features 64-bit quad-core processor VideoCore IV GPU 512 MB LPDDR2 DRAM 802.11b/g/n wireless LAN Bluetooth 4.2 / Bluetooth Low Energy (BLE) MicroSD card slot Mini HDMI and USB 2.0 OTG ports Micro USB power HAT-compatible 40-pin header Composite video and reset pins via solder test points CSI camera connector Specifications SoC Broadcom BCM2710A1 CPU 64-bit ARM Cortex-A53 (4x 1 GHz) GPU Broadcom VideoCore VI RAM 512 MB LPDDR2 Wireless LAN 2.4 GHz IEEE 802.11b/g/n Bluetooth Bluetooth 4.2, BLE USB 1x micro USB (for data)1x micro USB (for power supply) GPIO HAT-compatible 40-pin GPIO header Video & Audio 1080P HD video & stereo audio via mini-HDMI connector SD card microSD (for operating system and storage) Power 5 VDC / 2.5 A (supplied via micro USB connector) Dimensions 65 x 30 x 5 mm Raspberry Pi Zero 2 W is footprint-compatible with earlier Zero models.

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Develop innovative hardware-based projects in C The Raspberry Pi has traditionally been programmed using Python. Although this is a very powerful language, many programmers may not be familiar with it. C on the other hand is perhaps the most commonly used programming language and all embedded microcontrollers can be programmed using it. The C language is taught in most technical colleges and universities and almost all engineering students are familiar with using it with their projects. This book is about using the Raspberry Pi with C to develop a range of hardware-based projects. Two of the most popular C libraries, wiringPi and pigpio are used. The book starts with an introduction to C and most students and newcomers will find this chapter invaluable. Many projects are provided in the book, including using Wi-Fi and Bluetooth to establish communication with smartphones. Many sensor and hardware-based projects are included. Both wiringPi and pigpio libraries are used in all projects. Complete program listings are given with full explanations. All projects have been fully tested and work. The following hardware-based projects are provided in the book: Using sensors Using LCDs I²C and SPI buses Serial communication Multitasking External and timer interrupts Using Wi-Fi Webservers Communicating with smartphones Using Bluetooth Sending data to the cloud Program listings of all Raspberry Pi projects developed in this book are available on the Elektor website. Readers can download and use these programs in their projects. Alternatively, they can customize them to suit their applications.

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OWON SDS1102 is an affordable desktop digital oscilloscope with top features: 2-channel device with 100 MHz bandwidth, 1 GSa/s sample rate, 7' LCD display and 10 K pts wavelength. OWON SDS1102 has a simplified synchronization system which supports two trigger types: level and edge. Designed to solve problems that do not require large amounts of memory and difficult trigger types. Features Bandwidth: 100 MHz 2 channels Sample rate: 100 MS/s Ultra-thin body 7-inch high resolution LCD SCPI and LabVIEW supported Specifications Bandwidth 100 MHz Horizontal Scale (s/div) 5 ns/div – 1000 s/div Channel 2 Vertical Sensitivity 5 mV/div – 5 V/div (at input) DC Gain Accuracy 3% Vertical Resolution (A/D) 8 bits (2 channels simultaneously) Input Input Impedance 1 MΩ, 10 pF Input Coupling AC, DC, GND Max Input Voltage ±400 V, CATI, CATII Passive probes х1; х10 Probe Attenuation Factor х1; х10; х100; х1000 Trigger System Trigger Mode Auto, Normal, Single Trigger Type Edge, Video Edge Trigger Source CH1, CH2 Video Trigger Sampling Type real-time Sample Rate 1 GSa/s Equivalent Sample Rate No Wavelength 10K pts Interpolation sin(x)/x Measurement and Mathematical Treatment System Automatic Measurement Vpp, Vavg, RMS, Frequency, Period, Vmax, Vmin, Vtop, Vbase, Width, Overshoot, Pre-shootRise time, Fall time, +Width, -Width, +Duty, -Duty, Delay A→B, Delay A→B, area, cycle area Math Functions Addition, Subtraction, Multiplication, Division, FFT General Characteristics Display type 7' color LCD Display Resolution 800 x 480 Power 100-240 V, 45-440 Hz, <15 W Dimensions 301 x 70 x 152 mm Weight 1.1 kg Included 1x OWON SDS1102 Oscilloscope 2x Oscilloscope probe 1x Probe Adjust 1x Mains power cord 1x USB Cable 1x CD-Rom 1x Quickstart Guide Downloads User manual Datasheet

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This CAN Module is based on the CAN bus controller MCP2515 and CAN transceiver TJA1050. With this module, you will easy to control any CAN Bus device by SPI interface with your MCU, such as Arduino Uno and so on. Features Support CAN V2.0B Communication rate up to 1 MB/s Working Voltage: 5 V Working Current: 5 mA Interface: SPI Downloads MCP2515 Datasheet TJA1050 Datasheet

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The project book, written by well-known Elektor author Dogan Ibrahim, is an introduction to using the Raspberry Pi Pico Experimenting Kit. The kit is based on the Raspberry Pi Pico processor and includes several on-board as well as external sensors, and an actuator. The kit is programmed using the MicroPython programming language. The Thonny development environment (IDE) is used in all the projects in the book. All the projects given in the book have been fully tested and are working. No prior programming or electronic experience are required to follow the 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 bundle Raspberry Pi Pico RP2040 Pico Expansion Board 1.44-inch TFT LCD with ST7735 driver 3x Pushbutton input 3x LED output 1x Active buzzer 6x Interfaces (UART/GPIO/I²C/ADC) Grove-compatible Powered by Micro-USB 8 Modules MPU6050 6-axis IMU DHT11 humidity & temperature sensor 10 A relay SG90 servo Slide potentiometer Serial-to-WiFi (ESP8266) module Ultrasonic range sensor 8-bit RGB addressable LED (WS2818) module Project book (178 pages) 42 Projects in the BookBoard-Hardware-Based Projects Flashing an on-board LED Flashing SOS Flashing LED – using a timer Alternately flashing LEDs Pushbutton control Changing the LED flashing rate using pushbutton interrupts Binary counting LEDs Randomly flashing yellow, green, and blue LEDs Chasing LEDs Reaction timer Buttons and LEDs The TFT Display Second counter Event counter Reaction timer Display LED and button status Temperature and humidity – display in Thonny window Temperature and humidity – LED output Temperature and humidity – display on TFT ON/OFF temperature control ON/OFF temperature control – setting the desired temperature Voltmeter Changing the brightness of an LED Ultrasonic distance measurement - display in Thonny window Ultrasonic distance measurement - display on TFT Height of a person (stadiometer) Ultrasonic reverse-parking aid with buzzer Ultrasonic liquid level controller Melody maker Servo motor control Accurate servo motor control WS2812 LED strip light show - state machine approach WS2812 LED strip light show – using the neopixel library WS2812 LED strip show – another neopixel library example Displaying 3 dimensions of acceleration A car’s maximum acceleration – using the TFT display Level display using the gyroscope MPU6050 temperature display TFT display test TFT bitmap display Using the WiFi Connect to the local Wi-Fi network and display the IP address Controlling an LED from a smartphone using Wi-Fi Displaying the temperature on a smartphone using Wi-Fi

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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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The JT-RAD01 is a radiation meter for the detection of γ-, β- and X-ray radiation and is characterized by its particularly easy handling, high measurement stability and its handy and robust design. The meter has a large color LCD with backlight. The measurement results can be displayed both as clear statistics and graphically for easy evaluation. Specifications Detectable types of radiation γ-rays, β-rays, x-rays Measurement method Geiger-Müller Counter Dosis units μSv/h, μGy/h, mR/h, cps, cpm Alarm modes LED, vibration, sound Special features Real-time view and graph view, alarm when current and cumulative limits are exceeded Dosis rate 0.00 – 1000 μSv/h (10 mSv/h) Cummulative radiation dose 0.00 μSv – 500.0 mSv Energy range 48 keV – 1.5 MeV ≤±30% (CS-137) Sensitivity 80 CPM/μSv (Co-60) Battery 1100 mAh Lithium-ion Selectable languages English, German Dimensions 4.8 x 3.03 x 1.06' (122 x 77 x 27 mm) Included JT-RAD01 Nuclear Radiation Meter USB-C cable Manual (English/German)

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Although much classical HF and mobile equipment is still in use by many amateurs, the use of computers and digital techniques has now become very popular among amateur radio operators. Nowadays, anyone can purchase a Raspberry Pi computer and run almost all amateur radio software on the ‘RPi’, which is slightly bigger than the size of a credit card. The RTL-SDR devices have become very popular among hams because of their very low cost and rich features. A basic system may consist of a USB-based RTL-SDR device (dongle) with a suitable antenna, an RPi computer, a USB-based external audio input-output adapter, and software installed on the Pi. With such a simple setup it is feasible to receive signals from around 24 MHz to over 1.7 GHz. With the addition of a low-cost upconverter device, an RTL-SDR can easily and effectively receive the HF bands. This book is aimed at amateur radio enthusiasts, electronic engineering students, and anyone interested in learning to use the Raspberry Pi to build electronic projects. The book is suitable for the full range of beginners through old hands at ham radio. Step-by-step installation of the operating system is described with many details on the commonly used Linux commands. Some knowledge of the Python programming language is required to understand and modify the projects given in the book. Example projects developed in the book include a station clock, waveform generation, transistor amplifier design, active filter design, Morse code exerciser, frequency counter, RF meter, and more. The block diagram, circuit diagram, and complete Python program listings are given for each project, including the full description of the projects. Besides wide coverage of RTL-SDR for amateur radio, the book also summarizes the installation and use instructions of the following ham radio programs and software tools you can run on your Raspberry Pi: TWCLOCK, Klog, Gpredict, FLDIGI, DIRE WOLF, xcwcp, QSSTV, LinPsk, Ham Clock, CHIRP, xastir, and CQRLOG. The RTL-SDR kit includes RTL-SDR Blog brand R820T2 RTL2832U 1PPM TCXO SMA V3 Dongle Dipole Antenna Base with 60 cm RG174 extension cable 2x 23 cm to 1 m telescopic antenna 2x 5 cm to 13 cm telescopic antenna 3 meter RG174 extension cable Flexible Tripod Mount Suction Cup Mount RTL-SDR is an affordable dongle that can be used as a computer based radio scanner for receiving live radio signals in your area. This particular dongle includes a R820T2 tuner, a 1 PPM temperature compensated oscillator (TCXO), SMA F connector. It features an aluminium case with passive cooling via a thermal pad. Moreover, there is a software switchable bias tee circuit, supplementary ESD protection, lower overall noise and built-in direct sampling for HF reception. This device can receive frequencies from 500 kHz to 1.7 GHz and has up to 3.2 MHz of instantaneous bandwidth (2.4 MHz stable). Note: RTL-SDR dongles are RX only. You can use this kit either for terrestrial or satellite reception just by changing the orientation of the antenna. Thanks to the included mounts and extension cables it is possible to temporarily place the antenna outside for a better reception. Other potential applications are general radio scanning, air traffic control, public safety radio, ADSB, ACARS, trunked radio, P25 digital voice, POCSAG, weather balloons, APRS, NOAA APT weather satellites, radio astronomy, meteor scatter monitoring etc.

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The Raspberry Pi USB-C power supply is designed specifically to power the latest Raspberry Pi 4 Model B computers. The power supply features a USB-C cable and is available in four different models to suit different international power sockets, and in two colors. Specifications Output Output voltage +5.1 V DC Minimum load current 0 A Nominal load current 3.0 A Maximum power 15.3 W Load regulation ±5 % Line regulation ±2 % Ripple & noise 120 mVp-p Rise time 100 ms maximum to regulation limits for DC outputs Turn-on delay 3000 ms maximum at nominal input AC voltage and full load Protection Short circuit protectionOvercurrent protectionOver temperature protection Efficiency 81% minimum (output current from 100%, 75%, 50%, 25%)72% minimum at 10% load Output cable 1.5 m 18AWG Output connector USB Type-C Input Voltage range 100 - 240 Vac (rated)96 - 264 Vac (operating) Frequency 50 / 60 Hz ± 3 Hz Current 0.5 A maximum Power consumption (no load) 0.075 W maximum Inrush current No damage shall occur, and the input fuse shall not blow Operating ambient temperature 0 - 40 °C

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The nRF52840 Dongle is a small, low-cost USB dongle that supports Bluetooth 5.3, Bluetooth mesh, Thread, ZigBee, 802.15.4, ANT and 2.4 GHz proprietary protocols. The Dongle is the perfect target hardware for use with nRF Connect for Desktop as it is low-cost but still support all the short range wireless standards used with Nordic devices. The dongle has been designed to be used as a wireless HW device together with nRF Connect for Desktop. For other use cases please do note that there is no debug support on the Dongle, only support for programming the device and communicating through USB. It is supported by most of the nRF Connect for Desktop apps and will automatically be programmed if needed. In addition custom applications can be compiled and downloaded to the Dongle. It has a user programmable RGB LED, a green LED, a user programmable button as well as 15 GPIO accessible from castellated solder points along the edge. Example applications are available in the nRF5 SDK under the board name PCA10059. The nRF52840 Dongle is supported by nRF Connect for Desktop as well as programming through nRFUtil. Features Bluetooth 5.2 ready multiprotocol radio 2 Mbps Long Range Advertising Extensions Channel Selection Algorithm #2 (CSA #2) IEEE 802.15.4 radio support Thread ZigBee Arm Cortex-M4 with floating point support DSP instruction set ARM CryptoCell CC310 cryptographic accelerator 15 GPIO available via edge castellation USB interface direct to nRF52840 SoC Integrated 2.4 GHz PCB antenna 1 user-programmable button 1 user-programmable RGB LED 1 user-programmable LED 1.7-5.5 V operation from USB or external Downloads Datasheet Hardware Files

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Projects with Arduino Uno & Raspberry Pi with Examples for the MCP2515 CAN Bus Interface Module This book details the use of the Arduino Uno and the Raspberry Pi 4 in practical CAN bus based projects. Using either the Arduino Uno or the Raspberry Pi with off-the-shelf CAN bus interface modules considerably ease developing, debugging, and testing CAN bus based projects. This book is written for students, practicing engineers, enthusiasts, and for everyone else wanting to learn more about the CAN bus and its applications. The book assumes that the reader has some knowledge of basic electronics. Knowledge of the C and Python programming languages and programming the Arduino Uno using its IDE and Raspberry Pi will be useful, especially if the reader intends to develop microcontroller-based projects using the CAN bus. The book should be a useful source of reference material for anyone interested in finding answers to questions such as: What bus systems are available for the automotive industry? What are the principles of the CAN bus? How can I create a physical CAN bus? What types of frames (or data packets) are available in a CAN bus system? How can errors be detected in a CAN bus system and how dependable is a CAN bus system? What types of CAN bus controllers exist? How do I use the MCP2515 CAN bus controller? How do I create 2-node Arduino Uno-based CAN bus projects? How do I create 3-node Arduino Uno-based CAN bus projects? How do I set the acceptance masks and acceptance filters? How do I analyze data on the CAN bus? How do I create 2-node Raspberry Pi-based CAN bus projects? How do I create 3-node Raspberry Pi-based CAN bus projects?

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This radiation survey meter can test electric field radiation and magnetic field emission to reach the optimal test result. It is used to test and learn electromagnetic radiation situations indoor and outdoor. It is equipped with a built-in electromagnetic radiation sensor, which can display the radiation value on the LCD after processing by the control microchip. You can make reasonable processing or taking effective prevention measures toward the electromagnetic radiation according to the test result. Features One detector for two uses, simultaneous detection of electric and magnetic field radiation Color-screen display Sound and light alarm, automatic alarm above safe value Press one button to lock radiation value (data lock) LCD graphic display of radiation value trend Radiation assessment, indicating if current radiation value is at safe level Easy to operate with one hand, move or perform on-site measurement Applications Electromagnetic radiation monitoring: House and apartment, office, outdoor and industrial site Electromagnetic radiation test: Mobile phone, computer, TV set, refrigerator and high voltage cable radiation test Radiation protection product test: Test effects of radiation-proof clothes, radiation-proof film and other prevention articles Specifications Electric field Magnetic field Unit V/m uT / mG Accuracy 1 V/m 0.01 uT/ 0.1 mG Range 1~1999 V/m 0.01~99.99 uT/ 0.1~999.9 mG Alarm threshold 40 V/m 0.4 uT/4 mG Reading display 3½ digit LCD Measurement bandwidth 5 Hz~3500 MHz Sampling time About 0.4s Measurement mode Dual mode at the same time Overload indication Maximum value of measurement range on LCD Operation temperature 0~50°C Operation humidity Relative humidity below 80% Working voltage 3.7 V Power 3.7 V Lithium battery Dimensions 61 x 25 x 134 mm Weight 131 g Downloads Manual

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