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STM32 Nucleo family of processors are manufactured by STMicroelectronics. These are low-cost ARM microcontroller development boards. This book is about developing projects using the popular Nucleo development board. In the early chapters of the book, the architecture of the Nucleo family is briefly described. Software development tools that can be used with the Nucleo boards such as the Mbed, Keil MDK, TrueSTUDIO, and the System Workbench are described briefly in later Chapters. The book covers many projects using most features of the STM32 Nucleo development boards where the full software listings for Mbed and System Workbench are given for every project. The projects range from simple flashing LEDs to more complex projects using modules and devices such as GPIO, ADC, DAC, I²C, LCD, analog inputs and others. In addition, several projects are given using the Nucleo Expansion Boards, including popular expansion boards such as solid-state relay, MEMS and environmental sensors, DC motor driver, Wi-Fi, and stepper motor driver. These Expansion Boards plug on top of the Nucleo development boards and simplify the task of project development considerably. Features of this book Learn the architecture of the STM32 microcontrollers Learn how to use the Nucleo development board in projects using Mbed and System Workbench Toolchains Learn how to use the Nucleo Expansion Boards with the Nucleo development boards Update The Mbed compiler has been replaced with two software packages: The Mbed Studio and Keil Studio Cloud. Both of these software packages are free of charge and are available on the Internet. If you need assistance using the Keil Studio Cloud, please download the Guide below.

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Analogue Electronics and Microcontrollers Projects Hobbyist electronics can be a fun way to learn new skills that can be helpful to your career. Those who understand the basics of electronics can design their own circuits and projects. However, before you run, you need to learn to walk. It all starts with analogue electronics. You should be familiar with the simple components and circuits and understand their basic behaviors and the issues you may encounter. The best way to do this is through real experiments. Theory alone is not enough. This book offers a large number of practical entry-level circuits, with which everyone can gain the basic experience. Through the widespread introduction of microcontrollers, a new chapter in electronics has begun. Microcontrollers are now performing more and more tasks that were originally solved using discrete components and conventional ICs. Starting out has become easier and easier thanks to platforms including Bascom, Arduino, micro:bit. The book introduces numerous manageable microcontroller applications. It?s now a case of less soldering and more programming.

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With the availability of free and open source C/C++ compilers today, you might wonder why someone would be interested in assembler language. What is so compelling about the RISC-V Instruction Set Architecture (ISA)? How does RISC-V differ from existing architectures? And most importantly, how do we gain experience with the RISC-V without a major investment? Is there affordable hardware available? The availability of the Espressif ESP32-C3 chip provides a way to get hands-on experience with RISC-V. The open sourced QEMU emulator adds a 64-bit experience in RISC-V under Linux. These are just two ways for the student and enthusiast alike to explore RISC-V in this book. The projects in this book are boiled down to the barest essentials to keep the assembly language concepts clear and simple. In this manner you will have “aha!” moments rather than puzzling about something difficult. The focus in this book is about learning how to write RISC-V assembly language code without getting bogged down. As you work your way through this tutorial, you’ll build up small demonstration programs to be run and tested. Often the result is some simple printed messages to prove a concept. Once you’ve mastered these basic concepts, you will be well equipped to apply assembly language in larger projects.

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This clear acrylic case is the official case for the HackRF One/Pro board. It can replace the standard black plastic case of the HackRF One/Pro. Assembly Instructions Use a guitar pick or spudger to extract the HackRF One/Pro circuit board from the black plastic case. Insert one long screw into each corner of the bottom acrylic panel. Secure each long screw with a short (5 mm) spacer on the opposite side of the panel. Place the HackRF One/Pro circuit board (facing up) on top of the bottom panel, fitting the ends of the long screws through the corner mounting holes of the circuit board. Secure the circuit board with one long (6 mm) spacer in each corner. Place the top acrylic panel on top of the circuit board, aligning the cutouts with the circuit board’s expansion headers. Secure each corner with a short screw. Note: Do not overtighten! Hand-tighten only at every step.

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The DCA75 Pro is a great instrument that combines ease-of-use with amazing features. It can automatically identify a huge range of semiconductors, automatically identify pinouts and measure detailed parameters. Features Built-in graphics display (now backlit) to show detailed schematic of the component you're testing as well as pinout and measurement data USB connectivity to allow curve tracing, data storage/retrieval and device matching on your Windows PC (Windows 7 and higher) Single internal AAA alkaline cell for standalone operation Component Support Bipolar transistors (NPN/PNP inc Silicon/Germanium) Darlington transistors (NPN/PNP) Enhancement mode MOSFETs (N-Ch and P-Ch) Depletion mode MOSFETs (N-Ch and P-Ch) Junction FETs (N-Ch and P-Ch). Both symmetrical and asymmetrical types Enhancement IGBTs (N-Ch and P-Ch) Diodes and diode networks (2 and 3 lead types) Zener diodes (up to about 9 V) Voltage regulators (up to about 8 V) LEDs and bi-colour LEDs (2 lead and 3 lead types) Low power sensitive Triacs and Thyristors (<10 mA trigger and hold) Measurements BJT current gain (hFE) BJT base emitter voltage (Vbe) BJT collector leakage current MOSFET on and off gate threshold voltages MOSFET transconductance JFET pinch-off voltage JFET transconductance JFET IDSS (drain current for Vgs=0) IGBT on and off gate threshold voltages IGBT transconductance Voltage regulator output voltage Voltage regulator quiescent current consumption Voltage regulator drop-out voltage Zener voltage Diode forward voltage drop Specifications Analyzer type Semiconductor components Component detection Automatic Pinout detection Automatic, connect any way round Display type Graphic LCD (now backlit) Interface type USB for optional PC connection PC functions Curve tracing (Windows 7 and higher) Software Included on USB drive for Windows 7 and higher Battery Single AAA cell (supplied) Included Peak Atlas DCA75 Pro PC software on a USB Flash Drive for Windows 11, 10, 8, 7, XP Micro USB cable Fitted universal premium hook probes AAA Alkaline battery Downloads Datasheet (EN) User Guide (EN) User Guide (IT) Software Installation Guide (EN) Software and Firmware Package

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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) + *++

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The Siglent SDM3045X is a 4½ digit digital (66000 counts, sampling rate 150 Sa/s) multimeter incorporating a dual-display and is especially well suited for the needs of high-precision, multifunction and automatic measurement. With its large 4.3" (10.9 cm) TFT color display (480x272 pixels), the menu navigation is very intuitive to use and very easy to read. Features Real 4½ digit (66000 counts) readings resolution Up to 150 rdgs/s measurement speed True-RMS AC Voltage and AC Current measuring 1 GB NAND flash size, mass storage configuration files and data files Built-in cold terminal compensation for thermocouple With easy, convenient and flexible PC software: EasyDMM Standard interface: USB Device, USB Host, LAN USB & LAN remote interfaces support common SCPI command set. Compatible with other popular DMMs on the market. Application Fields Research Laboratory Development Laboratory Detection and Maintenance Calibration Laboratory Automatic Production Test Measurement Functions DC Voltage: 600 mV – 1000 V DC Current: 600 μA – 10 A AC Voltage: True-RMS, 600 mV – 750 V AC Current: True-RMS, 60 mA – 10 A 2/4-Wire Resistance: 600 Ω – 100 MΩ Capacitance: 2 nF – 10000 μF Continuity Test: Range is fixed at 2 kΩ Diode Test: Adjustable range is 0-4 V Frequency Measurement: 20 Hz – 500 KHz Period Measurement: 2 μs – 0.05 s Temperature: Support for TC and RTD sensor Max, Min, Average, Standard Deviation, dBm/dB, Relative Measurement, Pass/Fail, Histogram, Trend Chart Specifications DC voltage 200 mV, 2 V, 20 V, 200 V, 1000 V DC current 200 μA, 2 mA, 20 mA, 200 mA, 2 A, 10 A AC voltage True-RMS, 200 mV, 2 V, 20 V, 200 V, 750 V AC current True-RMS, 20 mA, 200 mA, 2 A, 10 A 2/4-wire resistance 200 Ω, 2 K, 20 K, 200 K, 2 M, 10 M, 100 MΩ Capacitance 2 nF, 20 nF, 200 nF, 2 μF, 20 μF, 200 μF, 10000 μF Connectivity Test Range fixed 2 KΩ Diode test Range fixed 2 V Frequency 20 Hz ~ 1 MHz Period 1 μs ~ 0.05 s Temperature Support thermocouple, RTD temperature sensor Maximum input voltage 1000 V Configuration Interface USB Device, USB Host, LAN Included 1x Siglent SDM3065X Multimeter 2x Multimeter Probes 1x Power Cord 1x USB Cable 1x Quick Start Guide Downloads User Manual Datasheet Remote Manual Service Manual

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The OWON XDM1041 is a fast, high-precision digital True RMS benchtop multimeter with a high-resolution 3.5-inch LCD and 50,000 counts. Its DC voltage accuracy is up to 0.05% and it can measure up to 65 values per second. Features 3.5“ high-resolution LCD (480x320 pixels) 55000 counts, DC voltage accuracy up to 0.05% Up to 65 readings per second Dual line display supported Trend analysis accessible in chart mode AC True RMS measurements (bandwidth: 20 Hz – 1 kHz) SCPI support: Remote control the multimeter through PC software via USB port Data record function, you can record the measured data into internal memory, and then read and process the recorded data with your computer. Specifications Measurement Range Resolution Accuracy DC Voltage 50.000 mV 0.001 mV 0.1% +10 500.00 mV 0.01 mV 0.05% +5 5.0000 V 0.0001 V 0.05% +5 50.000 V 0.001 V 0.05% +5 500.00 V 0.01 V 0.1% +5 1000.0 V 0.1 V 0.1% +10 AC Voltage 500 mV～750 V 20 Hz～45 Hz 1% +30 45 Hz～65 Hz 0.5% +30 65 Hz～1 KHz 0.7% +30 DC Current 500 uA 0.01 uA 0.15% +20 5000 uA 0.1 uA 0.15% +10 50 mA 0.001 mA 0.15% +20 500 mA 0.01 mA 0.15% +10 5 A 0.0001 A 0.5% +10 10 A 0.001 A 0.5% +10 AC Current 500 uA～500 mA 20 Hz～1 KHz 0.5% +20 5 A-10 A 1.5% +20 Resistance 500 Ω 0.01 Ω 0.15% +10 5 KΩ 0.0001 KΩ 0.15% +5 50 KΩ 0.001 KΩ 0.15% +5 500 KΩ 0.01 KΩ 0.15% +5 5 MΩ 0.0001 MΩ 0.3% +5 50 MΩ 0.001 MΩ 1% +10 Frequency 10.000 Hz～60 MHz / ±(0.2% +10) Capacitance 50 nF～500 uF / 2.5% +10 5 mF～50 mF 5% +10 Diode 3.0000 V 0.0001 V / Continuity 1000 Ω 0.1 Ω Adjustable threshold Temperature K type, PT100 Max Display 55,000 counts Data-logging Function Logging Duration 15ms～9999.999s Logging Length 1,000 points Display 3.5“ TFT LCD (480x320 pixels) Power supply 230 V AC mains voltage Dimensions 200 x 88 x 150 mm Weight approx. 0.5 kg Included 1x OWON XDM1041 Multimeter 1x Power cord 2x Test leads 1x Fuse 1x USB cable 1x Manual Downloads Programming Manual PC Software

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Elektor GREEN and GOLD members can download their digital edition here. Not a member yet? Click here. Low-Noise Lab Power Supply (1)A Quiet Source for Sensitive Circuits STM32 Edge AI Contest 2025: The Winners Batteries TodayTechnology and Differences in Lithium Batteries Adjustable Electronic LoadStatic + Dynamic DC Load Step-Down Converter from 48 V to 5 VThe Story of Circuit Development Autonomous Sensor Node v2.0Part 2: Hardware Validation and Power Optimizations VaristorsPeculiar Parts, the Series Graphical Grid Frequency MeterMonitor Grid Quality Starting Out in Electronics……Brings Its Own End Peak Current Load SMD FerritesMore Resilient Against Current Peaks Elektor Live! Expert Day 2025 Energy Harvesting Set to Accelerate IoT and IIoT Use CasesHow Energy Harvesting Frees IoT from the Grid Fnirsi DPS-150Compact and Portable Power Supply and Converter Adjustable USB-C Power SourceTurn Your USB-C Charger Into an Adjustable Power Supply Simple Charger and Capacity TesterWith Two Cheap “Off-the-Shelf” Modules Smart Color Detector with AI Voice and Playback PbMonitor v2.0Introduction to the Updated Battery Monitoring System A Fan for the Mini Reflow PlateSmart Modifications That Improve Results From Life’s ExperienceThe Tsunami of Indulgence Err-lectronicsCorrections, Updates, and Readers’ Letters 2026: An AI OdysseyWhen Models Start Dictating the Hardware Precision Picoammeter (2)Assembling, Calibration, and Test Wireless Device Poweringwith Inductive Technology AI-Based Autonomous DrivingThe RDW’s Self Driving Challenge 2024 Sound Card as Signal GeneratorPC as DCF77 Test Transmitter

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This OWON DC Power Supply has a small body and is easy to carry due to its light weight. Featuring a 3.7" TFT LCD display, it has a maximum output power of 180 W and a resolution of 1 mV/1 mA. Features Channel Single Channel Output Total Output Power 180 W Channel Output 0 - 60 V / 0 - 3 A × 1-CH Display 3.7' color LCD display Dimension 117 mm(L) × 194 mm(H) × 295 mm(D) Weight Approx. 5.8 kg Interface RS232 Specifications Rated Output (0 ℃ - 40 ℃) Voltage 0 - 60 V Current 3 A Load Regulation Voltage ≤ 0.01% + 3 mV Current ≤ 0.01% + 3 mA Power Regulation Voltage ≤ 0.01% + 3 mV Current ≤ 0.01% + 3 mA Setting Resolution Voltage 1 mV Current 1 mA Readback Resolution Voltage 1 mV Current 1 mA Setpoint accuracy (within 12 months) (25 ℃ ± 5 ℃) Voltage ≤ 0.03% + 10 mV Current ≤ 0.1% + 5 mA Readback Resolution (25 ℃ ± 5 ℃) Voltage ≤ 0.03% + 10 mV Current ≤ 0.1% + 5 mA Ripple/Noise (20 Hz - 20 MHz) Voltage (Vp-p) ≤ 4 mVp-p Voltage (Vrms) ≤ 1 mVrms Current (rms) ≤ 4 mArms Output temperature coefficient(0 ℃ - 40 ℃) Voltage ≤ 0.03% + 10 mV Current ≤ 0.1% + 5 mA Readback temperature coefficient Voltage ≤ 0.03% + 10 mV Current ≤ 0.1% + 5 mA Response Time 100 μs Storage 5 groups of data Working Temperature 0 - 40 ℃

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The nRSP-ST is a networked general coverage radio receiver for frequencies from 1 kHz to 2 GHz with up to 10 MHz of spectrum visibility. The nRSP-ST is your own personal remotely accessible SDR which can also be shared with a small number of trusted friends or colleagues. The nRSP-ST addresses the needs of radio enthusiasts who want a 'plug-and-play' solution for remote reception. As well as achieving this, we have addressed typical internet bandwidth limitations with the creation of a novel IQ Lite mode, which efficiently delivers channels of IQ data. We are also introducing the ability to control and store IQ recordings at the remote location. The nRSP-ST is ideal for anyone wanting a wideband remote receiver without needing computer skills and hours of set-up time and ongoing maintenance at the remote location. Features "Plug and play" integrated, networked general coverage receiver: Combines a receiver, a host computer and a whole lot more – all in one box! Apply power and connect to the internet (Ethernet or Wi-Fi) and the nRSP-ST is automatically accessible from anywhere Multi-platform SDRconnectTM software supports local operation or remote access on Windows, MacOS or Linux platforms The nRSP-ST & SDRconnect are configurable for available network bandwidth: In Full IQ mode, the nRSP-ST provides IQ data transfer of the visible spectrum bandwidth (e.g. for high-speed LAN or superfast internet connectivity) In IQ Lite mode, the nRSP-ST provides IQ data of channels up to 192 kHz wide (e.g. for digital decoding by the client) In Compact mode the nRSP-ST provides compressed audio (ideal for slower internet connections) Supports multiple client connections with a simultaneous mixture of connection modes – an admin tool allows you to assign usernames and timeouts to trusted friends or colleagues. All modes support visualization of up to 10 MHz spectrum bandwidth Two remote connection options: Use a remote SDRconnect client or Use the built-in web-server for remote access from any web browsing capable device, including Android/iOS tablets and phones The nRSP-ST offers the ability to record IQ and audio files to a NAS (network attached storage) device if available on the LAN. The 14-bit ADC full featured wideband SDR receiver covers all frequencies from 1 kHz through VLF, LF, MW, HF, VHF, UHF and L-band to 2 GHz, with no gaps Remotely monitor up to 10 MHz of spectrum at a time from a choice of 3 antennas Flash upgradable for future feature enhancements Included 1x nRSP-ST Receiver 1x WLAN antenna 1x Power supply 1x Manual Downloads Release notes Software

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The OWON SDS1104 oscilloscope is a practical choice for engineers, technicians, students, and hobbyists who need accurate signal analysis without the cost of high-end instruments. With its 100 MHz bandwidth and 1 GSa/s sampling rate, it reliably captures low- to mid-frequency signals, making it well suited for electronics development, troubleshooting, and educational use. Equipped with a 7-inch color TFT display, the SDS1104 provides clear waveform visualization, while automatic measurement functions and FFT analysis help users quickly evaluate frequency, voltage, and timing parameters. Advanced math operations, cursor measurements, and multiple trigger modes add further flexibility, making the oscilloscope a versatile tool for a wide range of testing scenarios. Specifications Bandwidth 100 MHz Sample Rate 1 GS/s Horizontal Scale (s/div) 5ns/div - 1000s/div, step by 1 - 2 - 5 Channel 4 Display 7" color LCD, 800 x 480 pixels Input Coupling DC, AC and GND Vertical Resolution (A/D) Vertical Resolution (A/D) Vertical Sensitivity 5mV/div - 5V/div (at input) Trigger Type Edge, Video Trigger Mode Auto, Normal and Single Waveform Math ＋, －, x, ÷, invert, FFT Fuse 2A, T class, 250 V Dimension (W x H x D) 301 x 152 x 70 mm Weight 1.1 kg Included 1x OWON SDS1104 Oscilloscope 1x Mains power cord 1x CD Rom 1x Quickstart Guide 1x USB Cable 4x Oscilloscope probe 1x Probe Adjust Downloads Datasheet Manual

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