The short-wave technique has a very particular appeal: It can easily bridge long distances. By reflecting short-wave signals off the conductive layers of the ionosphere, they can be received in places beyond the horizon and therefore can reach anywhere on earth. Although technology is striving for ever higher frequencies, and radio is usually listened to on FM, DAB+, satellite or the Internet, modern means of transmission require extensive infrastructure and are extremely vulnerable. In the event of a global power outage, there is nothing more important than the short-wave. Amateur radio is not only a hobby, it’s also an emergency radio system!
Elektor’s SDR-Shield is a versatile shortwave receiver up to 30 MHz. Using an Arduino and the appropriate software, radio stations, morse signals, SSB stations, and digital signals can be received.
In this book, successful author and enthusiastic radio amateur, Burkhard Kainka describes the modern practice of software defined radio using the Elektor SDR Shield. He not only imparts a theoretical background but also explains numerous open source software tools.
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
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
Features
Synchronous mode: Auto, Normal, Single, None, Scan
Rising/Falling edge trigger
Modes of vertical precise, horizontal precise measurement and triggering threshold
Auto Measurement: frequency, cycle time, duty cycle, DC RMS voltage/Vpp /Vmax/Vmin/Vavg
Inbuilt signal generator/10 Hz-1 MHz square wave (duty adjustable) or 10 Hz-20 KHz
Sine/Square/Triangle/Sawtooth wave
Specifications
Analog bandwidth
1 MHz
Max sample rate
10 Msa/s
Max sample memory depth
8K
Analog input impedance
1 MΩ
Max input voltage
±40 V (X1)
Coupling
AC/DC
Vertical sensitivity
20 mv/Div~10 V/Div (1-2-5)
Horizontal sensitivity
1 uS/Div~2 S/Div (1-2-5)
Storage
Built-in 8 MB U disk storage for waveform data and images
Power supply
Internal 550 mAh Lithium battery, recharging through Micro USB port
Display
2.8' Full Color TFT LCD (320x240 pixels)
Dimensions
100 x 56.5 x 10.7 mm
Downloads
User Manual
Source Code
App
Now you can connect your Arduino boards with the official Arduino USB cable. Through a USB-C to USB-C with a USB-A adapter connection, this data USB cable can easily connect your Arduino boards with your chosen programming device. The Arduino USB cable has a nylon braided jacket in the typical Arduino colors white and teal. The connectors have an aluminum shell that protects your cable from harm at the same time as looking cool. Length: 100 cm Aluminium shell with logo Nylon braided jacket white and teal
Fully updated for Raspberry Pi 5
Raspberry Pi is a small, clever, British-built computer that's packed with potential. Made using a desktop-class, energy-efficient processor, Raspberry Pi is designed to help you learn coding, discover how computers work, and build your own amazing things. This book was written to show you just how easy it is to get started.
Learn how to:
Set up your Raspberry Pi, install its operating system, and start using this fully functional computer.
Start coding projects, with step-by-step guides using the Scratch 3, Python, and MicroPython programming languages.
Experiment with connecting electronic components, and have fun creating amazing projects.
New in the 5th edition:
Updated for the latest Raspberry Pi computers: Raspberry Pi 5 and Raspberry Pi Zero 2 W.
Covers the latest Raspberry Pi OS.
Includes a new chapter on the Raspberry Pi Pico.
Downloads
GitHub
The official Raspberry Pi micro HDMI to HDMI (A/M) cable (black, 1 m) designed for the Raspberry Pi 4 and 5.
19-pin HDMI Type D(M) to 19-pin HDMI Type A(M)
1 m cable (black)
Nickel-plated plugs
4Kp60 compliant
RoHS compliant
3 Mohm 300 VDC insulation, withstands 300 VDC for 0.1s
The official Raspberry Pi micro HDMI to HDMI (A/M) cable designed for the Raspberry Pi 4 and 5.
19-pin HDMI Type D(M) to 19-pin HDMI Type A(M)
1 m cable (white)
Nickel-plated plugs
4Kp60 compliant
RoHS compliant
3 Mohm 300 VDC insulation, withstands 300 VDC for 0.1s
,
by Clemens Valens
FNIRSI DPOX180H 2-in-1 Digital Phosphor Oscilloscope (Review)
Oscilloscopes sure have made a lot of progress over the past two decades. Twenty years ago, I still used my single-beam analog 20 MHz CRT oscilloscope...
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by Sebastian Westerhold
The SDRplay RSPdx SDR Receiver Features Frequency Range of 1 kHz up to 2 GHz (Review)
The SDRplay RSPdx is a 14-bit single-tuner receiver with continuous coverage from 1 kHz up to 2GHz. Three input connectors, an ample array of software...
