More than 475 Audio Circuits from 30 Years of Elektor
This USB Stick contains over 475 different audio circuits from the volumes 1995-2025 of Elektor. The article search feature allows you to search full-text content. The results are always displayed as pre-formatted PDF documents.
Highlights
Surround-sound decoder
Compact amp
Sampling rate converter
Battery powered preamplifier
Titan 2000 amplifier
Crescendo Millennium amplifier
Audio-DAC/ADC
IR-S/PDFI receiver and transmitter
High-End Power Amp
Hi-fi Wireless Headset
Paraphase Tone Control and more…
On the Stick you will also find a folder with additional material such as PCB layouts, Gerber files and software.
Specifications
Storage
16 GB
Interfaces
1x USB-A1x USB-C
System requirements
PC with Adobe Reader 7.0 or higher
Web browser
This bundle includes the Red Pitaya STEMlab 125-14 PRO Gen 2 Starter Kit and the new book "Experimenting with Red Pitaya STEMlab Gen 2".
The Red Pitaya STEMlab 125-14 PRO Gen 2 Starter Kit is a powerful and flexible platform for signal processing, data acquisition, and electronic measurement applications. Designed for engineers, developers, researchers, and educators, this kit provides everything required to start building advanced measurement and control systems.
At the core of the kit is the STEMlab 125-14 PRO Gen 2 board, an upgraded and ultra-lightweight development platform. Powered by the Xilinx Zynq-7010 SoC with 512 MB of RAM, it combines FPGA programmability with ARM processing power to enable high-performance instrumentation and custom signal-processing solutions.
The board offers 14-bit ADC and DAC resolution, a 125 MS/s sampling rate, an input range of ±20 V, and up to 60 MHz bandwidth. Its improved low-noise analog front-end, USB-C connectivity, and compact design make it suitable for demanding applications such as RF development, radar systems, photonics research, software-defined radio (SDR), and industrial automation.
The Starter Kit includes all essential accessories for immediate use: a microSD card with preinstalled operating system, power supply, Ethernet cable for remote access, two 100 MHz oscilloscope probes, and SMA-to-BNC adapters for flexible signal connections.
The Red Pitaya STEMlab 125-14 PRO Gen 2 Starter Kit is an excellent platform for rapid prototyping, FPGA development, measurement instrumentation, and advanced electronics experimentation.
Features
14-bit ADC and DAC resolution
125 MS/s sampling rate
±20 V input range
Up to 60 MHz bandwidth
Xilinx Zynq-7010 SoC (FPGA + ARM processor)
512 MB RAM
Low-noise analog front- and back-ends
Applications
RF development and testing
Radar and wireless systems
Software-defined radio (SDR)
Photonics and optical research
Industrial automation and control systems
Signal analysis and instrumentation
Rapid prototyping of electronic measurement systems
Specifications
Processor
Dual-core ARM Cortex-A9
FPGA
AMD Xilinx Zynq-7010 SoC
RAM
512 MB (4 Gb)
Storage
microSD card (up to 32 GB)
Operating System
Linux-based Red Pitaya OS
ADC Resolution
14-bit
DAC Resolution
14-bit
Bandwidth
60 MHz (DC)
Sampling Rate
125 MS/s
Analog Input Channels
2
Analog Output Channels
2
Input Voltage Range
±1 V (LV) / ±20 V (HV)
Input Impedance
1 MΩ / 10 pF
Output Voltage Range
±1 V
Ethernet
1x Gigabit Ethernet (RJ45)
USB
2x USB-C 2.0 (for power and console)
Digital I/O
16x GPIO (3.3 V)
Communication Interfaces
I²C, SPI, UART, CAN
Power Supply
5 V/3 A via USB-C
Dimensions
106.8 x 60.0 x 17.9 mm
Included
1x Red Pitaya STEMlab 125-14 PRO Gen 2 board
2x 100 MHz oscilloscope probes
2x SMA-to-BNC adapters
1x microSD card with preinstalled OS
1x USB-C Power supply
1x Ethernet cable
Downloads
Documentation
Schematics
Book: Experimenting with Red Pitaya STEMlab Gen 2
With this new book, Red Pitaya goes beyond a versatile board. It becomes a powerful laboratory instrument for precision measurement, analysis, and control.
From the fundamentals of electronic project development, monitoring, control, and design to testing, this book walks you step-by-step through everything you need to know to harness the full potential of Red Pitaya hardware and software.
The book presents real-time, FPGA-based projects that are developed on a PC using the Vivado environment, then transferred to the Red Pitaya for execution and testing.
You will learn about enhanced performance, expanded I/O capabilities, improved FPGA features, and advanced connectivity options that open up new frontiers for precision measurement, monitoring, and control in your embedded applications.
Inside the book you will discover:
A deep dive into Red Pitaya architecture and hardware design
Electronic experiments using Red Pitaya for measurement and monitoring
Hands-on projects using the Python programming language
Practical guidance for FPGA programming using Red Pitaya
Red Pitaya FPGA projects using the Verilog HDL under Vivado IDE
Practical design of electronic projects including measurement and testing
Step-by-step examples that bridge theory and real-world implementation
Whether you are designing your own electronic circuits, developing signal analysis tools, or creating real-time control or monitoring systems, this book provides you the knowledge and confidence you need to fully learn and customize the Red Pitaya platform.
This bundle includes the Arduino UNO Q (2 GB) and the book "Arduino UNO Q and AI".
The Arduino UNO Q is the first UNO board with a hybrid dual-brain architecture, combining a powerful Linux processor with a real-time microcontroller – bringing advanced computing and precise control together on one board.
Powered by a Qualcomm Dragonwing QRB2210 MPU running Debian Linux and a STM32U585 MCU for real-time tasks, the UNO Q is built for next-generation applications. From Edge Computing and AI to robotics and automation, it delivers high performance without sacrificing ease of use.
Simply connect your peripherals and get started – no extra hardware required.
Features
Dual-core architecture: Linux MPU + real-time MCU
Qualcomm Dragonwing QRB2210 with Debian Linux support
STM32U585 microcontroller for deterministic control
Runs Arduino sketches via Zephyr OS
Ideal for AI, IoT, robotics, and industrial projects
Specifications
Microprocessor (MPU)
Qualcomm Dragonwing QRB2210:Quad-core Arm Cortex-A53 @ 2.0 GHzAdreno GPU 3D graphics accelerator2× ISP (13 MP + 13 MP or 25 MP) @ 30 fps
Microcontroller (MCU)
STM32U585Arm Cortex-M33 up to 160 MHz2 MB flash memory786 KB SRAM
RAM
2 GB LPDDR4
Power Supply
From USB-C connector 5 V max at 3 AInput Voltage (VIN): 7-24 V
Storage
16 GB eMMC
USB
1× USB-C port with host/device role switching, power role switch and video output
Connectivity
Wi-Fi 5 (2.4/5 GHz) with onboard antennaBluetooth 5.1 with onboard antenna
Interfaces
I²C/I³CSPIPWMCANUARTPSSIGPIOJTAGADC
Video
Video output support via USB-CMIPI DSI pins on JMEDIA header
Extra
4× RGB user-controllable LEDs8×13 Blue LED Matrix1× Qwiic connector voltage 3V3, I²C1× User push-buttonJCTL: MPU Remote Debug connector
Audio
Microphone IN / Headphone OUT / Line OUT on JMISC
MPU Operating System
Linux Debian OS with upstream support
Real-time Operating System
Arduino Core on Zephyr OS
Containerization
Docker and Docker Compose support
Support Operating Systems for Arduino App Lab
Windows: Windows 10 or later (64-bit)macOS: macOS 11 or later (64-bit)Linux: Ubuntu 22.04 or later, and Debian Trixie (64-bit)
Dimensions
68.85 × 53.34 mm (UNO form factor)
Downloads
Datasheet
User Manual
Pinout
Schematics
Book: Arduino UNO Q and AI – Learn to Build Intelligent Embedded Systems
Build smarter embedded systems with Arduino UNO Q. This book gives you the tools, knowledge, and confidence to turn ideas into intelligent, working solutions using the Arduino UNO Q platform. Discover how to build intelligent embedded systems with the Arduino UNO Q and AI.
Unlock the full potential of the Arduino UNO Q, a next-generation platform that combines the real-time power of the STM32U585 microcontroller with the flexibility of a Qualcomm Dragonwing QRB2210 microprocessor.
Learn how to rapidly prototype real-world applications using the Arduino IDE for low-level embedded control and Python in Arduino App Lab for high-level development.
Build confidence through hands-on projects that guide you step by step from basic board features to complete working systems.
Explore ready-to-use, AI based Arduino App Lab examples and see how they can jump-start your development and reduce time to deployment.
Step into the world of Edge AI with a clear, practical introduction to Edge Impulse Studio—no prior AI experience required.
Follow a complete, real-world workflow to create a Keyword Spotting AI application, covering data collection, model training, optimization, and on-device inference using the Edge Impulse Studio.
Bridge the gap between embedded systems and machine learning and learn how to bring intelligence directly onto your hardware.
Perfect for embedded engineers, educators, students, and makers looking to stay ahead in AI-enabled product development.
This bundle contains:
Arduino UNO Q (2 GB) (normal price: €50)
Book: Arduino UNO Q and AI (normal price: €35)
The SDRplay RSPdx-R2 is a wideband full featured single-tuner 14-bit SDR receiver which covers the entire RF spectrum from 1 kHz to 2 GHz giving up to 10 MHz of spectrum visibility. It contains three antenna ports, two of which use SMA connectors and operate across the full 1 kHz to 2 GHz range and the third uses a BNC connector which operates up to 200 MHz.
The RSPdx-R2 is an enhanced version of the RSPdx with further design improvements for use at frequencies below 2 MHz. Housed in a strong steel case, in addition to the functionality of the RSP1B, the RSPdx-R2 provides three software selectable antenna inputs and an external clock input. It offers excellent performance through HF and VHF frequencies all the way up to 2 GHz. The RSPdx-R2 also supports an "HDR mode" optimised for the demanding radio reception conditions below 2 MHz.
The RSPdx-R2, when used in conjunction with SDRplay’s own software, introduces a special HDR (High Dynamic Range) mode for reception within selected bands below 2 MHz. HDR mode delivers improved intermodulation performance and fewer spurious responses for those challenging bands.
Features
Covers all frequencies from 1 kHz through VLF, LF, MW, HF, VHF, UHF and L-band to 2 GHz, with no gaps
Receive, monitor and record up to 10 MHz of spectrum at a time
Significantly improved noise performance below 1 MHz (i.e. for some MF, LF and below)
Improved dynamic range below 2 MHz both in tuner mode and HDR mode
HDR mode below 2 MHz giving overall dynamic range and selectivity advantages
Software selectable choice of 3 antenna ports
External clock input for synchronisation purposes, or connection to GPS reference clock for extra frequency accuracy
Excellent dynamic range for challenging reception conditions
Free use of Windows-based SDRuno software (check website for versions supported)
Free use of SDRconnect SDR and server software for Windows, MacOS and Linux (Check website for versions supported)
Multiplatform driver and API support including Windows, Linux, Mac and Raspberry Pi 4/5
Strong and growing software support network
Calibrated S meter/RF power and SNR measurement with SDRuno (including datalogging to .CSV file capability)
Documented API provided to allow demodulator or application development on multiple platforms
Applications (Amateur)
Shortwave radio listening
Broadcast DXing (AM/FM/TV)
Panadaptor
Aircraft (ADS-B and ATC)
Slow Scan TV
Multi-amateur band monitoring
WSPR & digital modes
Weather fax (HF and satellite)
Satellite monitoring
Geostationary environmental satellites
Trunked radio
Utility and emergency service monitoring
Fast and effective antenna comparison
Applications (Industrial)
Spectrum Analyser
Surveillance
Wireless microphone monitoring
RF surveying
IoT receiver chain
Signal logging
RFI/EMC detection
Broadcast integrity monitoring
Spectrum monitoring
Power measurement
Applications (Educational/Scientific)
Teaching
Receiver design
Radio astronomy
Passive radar
Ionosonde
Spectrum analyser
Receiver for IoT sensor projects
Antenna research
Specifications
Frequency Range
1 kHz – 2 GHz
Antenna Connector
SMA
Antenna Impedance
50 Ohms
Current Consumption (Typical)
190 mA @ >60 MHz (excl. Bias-T)120 mA @ <60 MHz (excl. Bias-T)
USB Connector
USB-B
Maximum Input Power
+0 dBm Continuous+10 dBm Short Duration
ADC Sample Rates
2-10.66 MSPS
ADC Number of Bits
14 bit 2-6.048 MSPS12 bit 6.048-8.064 MSPS10 bit 8.064-9.216 MSPS8 bit >9.216 MSPS
Bias-T
4.7 V100 mA guaranteed
Reference
0.5ppm 24 MHz TCXOFrequency error trimmable to 0.01ppm in field
Operating Temperature
−10˚C to +60˚C
Dimensions
113 x 94 x 35 mm
Weight
315 g
Downloads
Datasheet
Software
RSPdx-R2 vs RSPduo
RSPdx-R2
RSPduo
Continuous coverage from 1 kHz to 2 GHz
✓
✓
Up to 10 MHz visible bandwidth
✓
✓
14-bit ADC silicon technology plus multiple high-performance input filters
✓
✓
Software selectable AM/FM & DAB broadcast band notch filters
✓
✓
4.7 V Bias-T for powering external remote antenna amplifier
✓
✓
Powers over the USB cable with a simple type B socket
✓
✓
50Ω SMA antenna input(s) for 1 kHz to 2 GHz operation (software selectable)
2
2
Additional software selectable Hi-Z input for up to 30 Mhz operation
✓
Additional software selectable 50Ω BNC input for up to 200 MHz operation
✓
Additional LF/VLF filter for below 500 kHz
✓
24 MHz reference clock input (+ output on RSPduo)
✓
✓
Dual tuners enabling reception on 2 totally independent 2 MHz ranges
✓
Dual tuners enabling diversity reception using SDRuno
✓
Rugged black painted steel case
✓
✓
Overall performance below 2 MHz for MW and LF
++
+
Multiple simultaneous applications
+
++
Performance in challenging fading conditions (*using diversity tuning)
+
*++
The SDRplay RSP1B is an enhanced version of the popular RSP1A – a powerful, wideband, full-featured 14-bit SDR that covers the RF spectrum from 1 kHz to 2 GHz. The RSP1B comes in a rugged, black-painted steel case and offers significantly improved noise performance.
All it needs is a computer and an antenna to deliver excellent communications-receiver functionality. It includes a choice of SDRuno for Windows and the multi-platform SDRconnect software for Windows, macOS, and Linux (supplied free of charge by SDRplay). You can monitor up to 10 MHz of spectrum at a time.
A documented API allows developers to create new demodulators or applications for the platform.
Features
Covers all frequencies from 1 kHz through VLF, LF, MW, HF, VHF, UHF and L-band to 2 GHz, with no gaps
Receive, monitor and record up to 10 MHz of spectrum at a time
Free use of windows-based SDRuno software which provides an ever-increasing feature-set
Strong and growing software support network
Calibrated S meter/ RF power and SNR measurement with SDRuno (including datalogging to .CSV file capability)
Documented API provided to allow demodulator or application development on multiple platforms
Excellent dynamic range for challenging reception conditions
Works with popular 3rd party SDR software (including HDSDR, SDR Console and Cubic SDR)
ExtIO based plugin available
Software upgradeable for future standards
Strong and growing software support network
API provided to allow demodulator or application development
Multiplatform driver and API support including Windows, Linux, Mac, Android and Raspberry Pi
Up to 16 individual receivers in any 10 MHz slice of spectrum using SDRuno
Calibrated S meter and power measurements with SDRuno
Stand-alone windows-based spectrum analyser software available (with sweep, sample and hold features)
Ideal for monitoring of ISM/ IoT/ Telemetry bands <2 GHz
Ideal for portable operation
Specifications
Frequency Range
1 kHz – 2 GHz
Antenna Connector
SMA
Antenna Impedance
50 Ohms
Current Consumption (Typical)
185 mA (excl. Bias-T)
USB Connector
USB Type B
Maximum Input Power
+0 dBm Continuous+10 dBm Short Duration
ADC Sample Rates
2-10.66 MSPS
ADC Number of Bits
14 bit 2-6.048 MSPS12 bit 6.048-8.064 MSPS10 bit 8.064-9.216 MSPS8 bit >9.216 MSPS
Bias-T
4.7 V100 mA guaranteed
Reference
0.5ppm 24 MHz TCXO.Frequency error trimmable to 0.01ppm in field.
Operating Temperature Range
-10˚C to +60˚C
Dimensions
98 x 88 x 34 mm
Weight
110 g
Downloads
Datasheet
Software
RSP1B vs RSPdx vs RSPduo
RSP1B
RSPdx
RSPduo
Continuous coverage from 1 kHz to 2 GHz
✓
✓
✓
Up to 10 Mhz visible bandwidth
✓
✓
✓
14-bit ADC silicon technology plus multiple high-performance input filters
✓
✓
✓
Software selectable AM/FM & DAB broadcast band notch filters
✓
✓
✓
4.7 V Bias-T for powering external remote antenna amplifier
✓
✓
✓
Powers over the USB cable with a simple type B socket
✓
✓
✓
50Ω SMA antenna input(s) for 1 kHz to 2 GHz operation (software selectable)
1
2
2
Additional software selectable Hi-Z input for up to 30 Mhz operation
✓
Additional software selectable 50Ω BNC input for up to 200 MHz operation
✓
Additional LF/VLF filter for below 500 kHz
✓
24 MHz reference clock input (+ output on RSPduo)
✓
✓
Dual tuners enabling reception on 2 totally independent 2 MHz ranges
✓
Dual tuners enabling diversity reception using SDRuno
✓
Robust and strong plastic case (with internal RF shielding layer)
✓
Rugged black painted steel case
✓
✓
Overall performance below 2 MHz for MW and LF
+
++
+
Multiple simultaneous applications
+
+
++
Performance in challenging fading conditions (*using diversity tuning)
+
+
*++
Book: Mastering the Arduino Uno R4
Based on the low-cost 8-bit ATmega328P processor, the Arduino Uno R3 board is likely to score as the most popular Arduino family member, and this workhorse has been with us for many years. Eleven years later, the long-overdue successor, the Arduino Uno R4, was released. It is built around a 48 MHz, 32-bit Arm Cortex-M4 microcontroller and provides significantly expanded SRAM and Flash memory. Additionally, a higher-precision ADC and a new DAC are added to the design. The Uno R4 board also supports the CAN Bus with an interface.
Two versions of the board are available: Uno R4 Minima, and Uno R4 WiFi. This book is about using these new boards to develop many different and interesting projects with just a handful of parts and external modules. All projects described in the book have been fully tested on the Uno R4 Minima or the Uno R4 WiFi board, as appropriate.
The project topics include the reading, control, and driving of many components and modules in the kit as well as on the relevant Uno R4 board, including
LEDs
7-segment displays (using timer interrupts)
LCDs
Sensors
RFID Reader
4x4 Keypad
Real-time clock (RTC)
Joystick
8×8 LED matrix
Motors
DAC (Digital-to-analog converter)
LED matrix
WiFi connectivity
Serial UART
CAN bus
Infrared controller and receiver
Simulators
… all in creative and educational ways with the project operation and associated software explained in great detail.
Arduino Uno R4 WiFi
The Arduino Uno R4 is powered by the Renesas RA4M1 32-bit ARM Cortex-M4 processor, providing a significant boost in processing power, memory, and functionality. The WiFi version comes with an ESP32-S3 WiFi module in addition to the RA4M1, expanding creative opportunities for makers and engineers.
The Arduino Uno R4 runs at 48 MHz, which provides a 3x increase over the popular Uno R3. Additionally, SRAM has been upgraded from 2 kB to 32 kB, and flash memory from 32 kB to 256 kB to support more complex projects. Responding to community feedback, the USB port is now USB-C, and the maximum power supply voltage has been raised to 24 V with an enhanced thermal design. The board includes a CAN bus and an SPI port, enabling users to reduce wiring and perform parallel tasks by connecting multiple shields. A 12-bit analog DAC is also provided on the board.
Specifications
Microcontroller
Renesas RA4M1 (ARM Cortex-M4)
USB
USB-C
Programming Port
Pins
Digital I/O Pins
14
Pins
Analog input pins
6
DAC
1
RTC
1
PWM pins
6
Communication
UART
1x
I²C
1x
SPI
1x
Qwiic I²C connector
1x
CAN
1x CAN Bus
Power
Circuit operating voltage
5 V
Input voltage (VIN)
6-24 V
DC Current per I/O Pin
8 mA
Clock speed
Main core
48 MHz
Memory
RA4M1
256 kB Flash, 32 kB RAM
LED Matrix
12 x 8 (96 red LEDs)
Dimensions
68.9 x 53.4 mm
Downloads
Datasheet
Schematics
This bundle contains:
Book: Mastering the Arduino Uno R4 (normal price: €45)
Arduino Uno R4 WiFi (normal price: €30)
Over 180 Projects with Raspberry Pi, Pico W, Arduino, and ESP32
This bundle contains the Universal Maker Sensor Kit, which consists of many sensors, actuators, displays, and motors. It’s perfect for environmental monitoring, smart home projects, robotics, and game controllers.
The new Elektor book describes the design of many projects using the kit together with the popular Raspberry Pi, Raspberry Pi Pico W, Arduino Uno, and the ESP32 family of development boards. You can choose any of these development boards for your projects and either use the provided programs as they are, or modify these programs to suit your applications.
This bundle contains:
Book: Universal Maker Sensor Kit (normal price: €45)
Universal Maker Sensor Kit for Raspberry Pi, Pico W, Arduino, ESP32 (normal price: €70)
Book: Universal Maker Sensor Kit
Learn to use more than 35 Sensors and Actuators with C++, Python, and MicroPython
This book contains over 180 projects for all four major development boards (Arduino, Raspberry Pi, Pico W, and ESP32). Depending on the development board, projects are available in the C, Python, or MicroPython programming languages.
The project titles, brief descriptions, wiring diagrams, and full program listings together with their detailed descriptions are given in the guide.
Universal Maker Sensor Kit (for Raspberry Pi, Pico W, Arduino, ESP32)
Discover endless creativity with the Universal Maker Sensor Kit, designed for use with Raspberry Pi, Pico W, Arduino, and ESP32. This versatile kit offers compatibility across popular development platforms, including Arduino Uno R4 Minima/WiFi, Uno R3, Mega 2560, Raspberry Pi 5, 4, 3B+, 3B, Zero, Pico W, and ESP32.
Featuring over 35 sensors, actuators, and displays, it's perfect for projects ranging from environmental monitoring and smart home automation to robotics and interactive gaming. Step-by-step tutorials in C/C++, Python, and MicroPython guide beginners and experienced makers alike through 169 exciting projects.
Features
Wide Compatibility: Fully supports Arduino (Uno R3, Uno R4 Minima/WiFi, Mega 2560), Raspberry Pi (5, 4, 3B+, 3B, Zero, Pico W), and ESP32, enabling extensive flexibility across numerous development platforms. Includes instructions for building 169 projects.
Comprehensive Components: Features more than 35 sensors, actuators, and display modules suitable for diverse projects such as environmental monitoring, smart home automation, robotics, and interactive game controllers.
Detailed Tutorials: Provides clear, step-by-step tutorials covering Arduino, Raspberry Pi, Pico W, ESP32, and each included component. Tutorials are available in C/C++, Python, and MicroPython, catering effectively to both beginners and experienced makers.
Suitable for All Skill Levels: Offers structured projects designed to guide users seamlessly from beginner to advanced proficiency in electronics and programming, enhancing creativity and technical expertise.
Kit includes
Breadboard
Button Module
Capacitive Soil Moisture Module
Flame Sensor Module
Gas/Smoke Sensor Module (MQ2)
Gyroscope & Accelerometer Module (MPU6050)
Hall Sensor Module
Infrared Speed Sensor Module
IR Obstacle Avoidance Sensor Module
Joystick Module
PCF8591 ADC DAC Converter Module
Photoresistor Module
PIR Motion Module (HC-SR501)
Potentiometer Module
Pulse Oximeter and Heart Rate Sensor Module (MAX30102)
Raindrop Detection Module
Real Time Clock Module (DS1302)
Rotary Encoder Module
Temperature Sensor Module (DS18B20)
Temperature and Humidity Sensor Module (DHT11)
Temperature, Humidity & Pressure Sensor (BMP280)
Time of Flight Micro-LIDAR Distance Sensor (VL53L0X)
Touch Sensor Module
Ultrasonic Sensor Module (HC-SR04)
Vibration Sensor Module (SW-420)
Water Level Sensor Module
I²C LCD 1602
OLED Display Module (SSD1306)
RGB LED Module
Traffic Light Module
5 V Relay Module
Centrifugal Pump
L9110 Motor Driver Module
Passive Buzzer Module
Servo Motor (SG90)
TT Motor
ESP8266 Module
JDY-31 Bluetooth Module
Power Supply Module
Documentation
Online Tutorial
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 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
This bundle gives you everything you need to get started right away with the XIAO ESP32-C3 development board. Learn the fundamentals of the ESP32-C3 and build practical projects with Wi-Fi, Bluetooth, sensors, displays, PWM, Deep Sleep, and much more.
Book: Build Smart Projects with the XIAO ESP32-C3 Board
The XIAO ESP32-C3 board combines the ultra-compact form factor of the XIAO series with the full capabilities of the ESP32-C3 chip, including integrated Wi-Fi and Bluetooth 5.0. This book is a comprehensive, hands-on guide to getting the most out of this powerful yet affordable development board.
The author takes readers from the fundamentals to advanced projects. Starting with LED blinking and dimming, the book progresses to ADC and PWM for precise sensor interfacing and PWM-controlled lighting effects before moving on to building practical, real-world applications, including:
A Wi-Fi weather station with an OLED display and real-time online weather data
An ultrasonic parking assistant with audible feedback
A refrigerator monitoring probe with climate sensing and Deep Sleep for years of battery operation
A retro Pong game controlled by a touch-free sensor
A microphone-based party app that responds to claps
And much more: lighting control, reaction-time measurement, mains frequency analysis, soil moisture sensing, ambient LED lighting, and 7-segment displays
Seeed Studio XIAO ESP32C3
Seeed Studio XIAO ESP32C3 has equipped a highly-integrated ESP32-C3 chip, built around a 32-bit RISC-V chip processor with a four-stage pipeline that operates at up to 160 MHz.
The board equips highly-integrated ESP32-C3 SoC. The chip has been installed with a complete 2.4 GHz Wi-Fi subsystem which means it supports Station mode, SoftAP mode, SoftAP & Station mode, and promiscuous mode for multiple Wi-Fi applications. It works under an ultra-low power state, also supporting features of Bluetooth 5 and Bluetooth mesh. There are 400 KB SRAM & 4 MB Flash on the chip, allowing for more programming space, and bringing more possibilities to the IoT control scenarios.
Applications
Internet of Things
Wearable devices
Health monitoring
Education
Low-Power networking
Rapid prototyping
Specifications
Processor
ESP32-C3 SoC
RISC-V single-core 32-bit chip processor with a four-stage pipeline that operates at up to 160 MHz
Wireless
Complete 2.4GHz Wi-Fi subsystem
Bluetooth Low Energy 5.0/ Bluetooth Mesh
On-chip Memory
400 KB SRAM & 4 MB Flash
Interface
1x UART, 1x I²C, 1x SPI, 11x GPIO (PWM), 4x ADC
1x Reset button, 1x Boot button
Power (Typ.)
Max 3.3 V Output Current: 500 mA Test Condition: BAT Pin Input @ 3.8 V Source Capability: 3 A
Charging current: 380 mA(Fast) / 40 mA(Trickle)
Input voltage (VIN): 5 VInput voltage (BAT): 3.7 V
Deep Sleep Power Consumption
Deep Sleep Mode: 44 μA
Wi-Fi Enabled Power Consumption
Active Mode: 75 mA
Modem-sleep Mode: 25 mA
Light-sleep Mode: 4 mA
BLE Enabled Power Consumption
Modem-sleep Mode: 27 mA
Light-sleep Mode: 10 mA
Dimensions
21 x 17.8 mm
Included
1x Seeed Studio XIAO ESP32C3
1x Antenna
2x 7-pin header
Downloads
Wiki
Datasheet
This bundle contains:
Book: Build Smart Projects with the XIAO ESP32-C3 Board (normal price: €35)
Board: Seeed Studio XIAO ESP32C3 (normal price: €10)
The SDRplay RSPduo is a high performance dual-tuner 14-bit SDR receiver. Housed in a high quality steel enclosure, each tuner can operate individually anywhere between 1 kHz and 2 GHz with up to 10 MHz of bandwidth or both tuners can operate simultaneously anywhere between 1 kHz and 2 GHz with up to 2 MHz of bandwidth per tuner.
A high stability reference along with external clocking features makes this device ideally suited to industrial, scientific & educational applications.
Features
Dual tuner provides independent coverage from 1 kHz to 2 GHz using 2 antenna ports simultaneously
14-bit ADC silicon technology
Up to 10 MHz visible bandwidth (single tuner mode) or 2 slices of 2 MHz spectrum (dual tuner mode)
3 software-selectable antenna ports (2x 50Ω and 1x 1kΩ high impedance balanced/unbalanced input)
High impedance antenna port (1 kHz to 30 MHz) with selectable MW notch filter and choice of 2 pre-selection filters
Software selectable AM/FM and DAB broadcast band notch filters for the 2 SMA antenna (1 kHz to 2 GHz) antenna ports
External clock input and output enables easy synchronisation to multiple RSPs or external reference clock
Powers over the USB cable with a simple type B socket
11 high-selectivity, built in front-end preselection filters on both the 2 SMA antenna ports
Software selectable multi-level Low Noise Preamplifier
Bias-T power supply for powering antenna-mounted LNA
Enclosed in a rugged black painted steel case.
SDRuno – World Class SDR software for Windows
Documented API for new apps development
Specifications
Frequency Range
1 kHz – 2 GHz
Antenna Connector
SMA
Antenna Impedance
50 Ohms
Current Consumption (Typical)
Single Tuner Mode: 180 mA (excl. Bias-T)Dual Tuner Mode: 280 mA (excl. Bias-T)
USB Connector
USB-B
Maximum Input Power
+0 dBm Continuous+10 dBm Short Duration
ADC Sample Rates
2-10.66 MSPS
ADC Number of Bits
14 bit 2-6.048 MSPS12 bit 6.048-8.064 MSPS10 bit 8.064-9.216 MSPS8 bit >9.216 MSPS
Bias-T
4.7 V100 mA guaranteed
Reference
High Temperature Stability (0.5ppm) 24 MHz TCXO.Frequency error trimmable to 0.01ppm in field.
Operating Temperature Range
−10˚C to +60˚C
Dimensions
98 x 94 x 33 mm
Weight
315 g
Downloads
Datasheet
Detailed Technical Information
Software
RSPdx-R2 vs RSPduo
RSPdx-R2
RSPduo
Continuous coverage from 1 kHz to 2 GHz
✓
✓
Up to 10 MHz visible bandwidth
✓
✓
14-bit ADC silicon technology plus multiple high-performance input filters
✓
✓
Software selectable AM/FM & DAB broadcast band notch filters
✓
✓
4.7 V Bias-T for powering external remote antenna amplifier
✓
✓
Powers over the USB cable with a simple type B socket
✓
✓
50Ω SMA antenna input(s) for 1 kHz to 2 GHz operation (software selectable)
2
2
Additional software selectable Hi-Z input for up to 30 Mhz operation
✓
Additional software selectable 50Ω BNC input for up to 200 MHz operation
✓
Additional LF/VLF filter for below 500 kHz
✓
24 MHz reference clock input (+ output on RSPduo)
✓
✓
Dual tuners enabling reception on 2 totally independent 2 MHz ranges
✓
Dual tuners enabling diversity reception using SDRuno
✓
Rugged black painted steel case
✓
✓
Overall performance below 2 MHz for MW and LF
++
+
Multiple simultaneous applications
+
++
Performance in challenging fading conditions (*using diversity tuning)
+
*++
,
by Günter Spanner
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