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Program and Build Raspberry Pi 5 Based Ham Station Utilities with the RTL-SDR The RTL-SDR devices (V3 and V4) have gained popularity among radio amateurs 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, a Raspberry Pi 5 computer, a USB based external audio input-output adapter, and software installed on the Raspberry Pi 5 computer. With such a modest setup, it is possible to receive signals from around 24 MHz to over 1.7 GHz. This book is aimed at amateur radio enthusiasts and electronic engineering students, as well as at anyone interested in learning to use the Raspberry Pi 5 to build electronic projects. The book is suitable for both beginners through experienced readers. Some knowledge of the Python programming language is required to understand and eventually modify the projects given in the book. A block diagram, a circuit diagram, and a complete Python program listing is given for each project, alongside a comprehensive description. The following popular RTL-SDR programs are discussed in detail, aided by step-by-step installation guides for practical use on a Raspberry Pi 5: SimpleFM GQRX SDR++ CubicSDR RTL-SDR Server Dump1090 FLDIGI Quick RTL_433 aldo xcwcp GPredict TWCLOCK CQRLOG klog Morse2Ascii PyQSO Welle.io Ham Clock CHIRP xastir qsstv flrig XyGrib FreeDV Qtel (EchoLink) XDX (DX-Cluster) WSJT-X The application of the Python programming language on the latest Raspberry Pi 5 platform precludes the use of the programs in the book from working on older versions of Raspberry Pi computers.

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Recently, the development of a tiny chip called the ESP8266 has made it possible to interface any type of microcontroller to a Wi-Fi AP. The ESP8266 is a low-cost tiny Wi-Fi chip having fully built-in TCP/IP stack and a 32-bit microcontroller unit. This chip, produced by Shanghai based Chinese manufacturer Espressif System, is IEEE 802.11 b/g/n Wi-Fi compatible with on-chip program and data memory, and general purpose input-output ports. Several manufacturers have incorporated the ESP8266 chip in their hardware products (e.g. ESP-xx, NodeMCU etc) and offer these products as a means of connecting a microcontroller system such as the Android, PIC microcontroller or others to a Wi-Fi. The ESP8266 is a low-power chip and costs only a few Dollars. ESP8266 and MicroPython – Coding Cool Stuff is an introduction to the ESP8266 chip and describes the features of this chip and shows how various firmware and programming languages such as the MicroPython can be uploaded to the chip. The main aim of the book is to teach the readers how to use the MicroPython programming language on ESP8266 based hardware, especially on the NodeMCU. Several interesting and useful projects are given in the e-book (pdf) to show how to use the MicroPython in NodeMCU type ESP8266 hardware: Project “What shall I wear today?”: You will be developing a weather information system using a NodeMCU development board together with a Text-to-Speech processor module. Project “The Temperature and Humidity on the Cloud”: You will be developing a system that will get the ambient temperature and humidity using a sensor and then store this data on the cloud so that it can be accessed from anywhere. Project “Remote Web Based Control”: You will be developing a system that will remotely control two LEDs connected to a NodeMCU development board using an HTTP Web Server application.

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De OWON SDS1104 oscilloscoop is een praktische keuze voor engineers, technici, studenten en hobbyisten die nauwkeurige signaalanalyse nodig hebben zonder de kosten van hoogwaardige meetinstrumenten. Met een bandbreedte van 100 MHz en een samplingrate van 1 GSa/s legt hij laag- tot middenfrequente signalen betrouwbaar vast, waardoor hij zeer geschikt is voor elektronicaontwikkeling, foutopsporing en educatief gebruik. Uitgerust met een 7-inch kleuren-TFT-display biedt de SDS1104 een duidelijke weergave van golfvormen, terwijl automatische meetfuncties en FFT-analyse gebruikers helpen om frequentie-, spannings- en timingparameters snel te beoordelen. Geavanceerde wiskundige bewerkingen, cursormetingen en meerdere triggermodi zorgen voor extra flexibiliteit, waardoor de oscilloscoop een veelzijdig hulpmiddel is voor uiteenlopende testsituaties. Specificaties 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 Inbegrepen 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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De OWON VDS1022I 2-kanaals USB-oscilloscoop (25 MHz) is een oscilloscoop voor gebruik met een computer. Hij wordt van voeding voorzien via USB en heeft een klein formaat, waardoor hij gemakkelijk mee te nemen is. De oscilloscoop is zeer betaalbaar. Hij heeft een afgeschermde USB-aansluiting, waardoor storing wordt verminderd en de computer wordt beschermd tegen overspanning. De multipoort op de scoop kan worden gebruikt voor externe triggering, trigger out of Pass / Fail uitgang.Kenmerken 25 MHz bandbreedte, en max. 1 GS/s real-time sample rate 10M recordlengte Gebruiksvriendelijke UI: FFT, of X-Y, en golfvorm 2 weergaven op hetzelfde scherm Multi-trigger optie: flank, video, slope, puls en afwisselend USB isolatie - minder signaalverstoring, meer pc-bescherming USB busvoeding en LAN afstandsbediening (optioneel) Ultradunne behuizing, gemakkelijk draagbaar Specificaties Bandbreedte 25 MHz Kanalen 2+1 (multi) Sample Rate 100 MSa/s Horizontal schaal (s/div) 5 ns/div?100s/div, in stappen van 1?2?5 Opname lengte 5K Max ingangsspanning 400 V (PK - PK) (DC+AC, PK - PK) 40 V (PK - PK) (DC+AC, PK - PK) Verticale resolutie (A/D) 8 bits (2 kanalen tegelijkertijd) Model VDS1022I Verticale gevoeligheid 5 mV/div?5 V/div Triggertype Edge, Pulse, Video, Slope, en Afwisselend Trigger mode Auto, Normaal, en Enkelvoudig Acquisition Mode Sample, Peak Detect, en Gemiddeld Golfvorm berekeningen ?, ?, ×, ÷, invert, FFT Communicatie Interface USB 2.0 (geïsoleerd) Multifunctioneel Interface Signaltype Level standard TTL Voeding 5,0 V/1 A Stroomverbruik ?2.5 W Afmetinegn (B × H × D) 170 x 120 x 18 mm Gewicht 0,26 kg Inbegrepen 1x OWON VDS1022I oscilloscoop 1x CD-ROM 1x Snelstartgids 2x Oscilloscoop probe 1x Probe 1x Voedingsadapter 1x USB kabel 1x Silicone beschermers voor de behuizing 1x Stroomkabel Downloads Datasheet Gebruiksaanwijzing SCPI protocol USB driver

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De OWON SPS6051 ventilatorloze programmeerbare DC-voeding (150 W) levert ultrastille, uiterst nauwkeurige prestaties met een nauwkeurigheid van 10 mV/1 mA en geavanceerde warmteafvoer voor betrouwbaarheid op lange termijn. Met uitgebreide bescherming, een USB-interface met SCPI-ondersteuning voor afstandsbediening en een 2,8-inch TFT LCD-scherm, is dit de perfecte keuze voor laboratoria, elektronicatests en onderzoek. Kenmerken Ontwerp zonder ventilator: ultrastille werking, vermindert trillingsgeluid en minimaliseert de potentiële storingsrisico's die gepaard gaan met traditionele koelventilatoren. Uitstekend ontwerp voor warmteafvoer: zorgt voor een gecontroleerde temperatuurstijging, waardoor langdurig gebruik onder volledige belasting mogelijk is en de levensduur van de interne componenten wordt verlengd. Lichtgewicht en ultradun ontwerp. Uitgangsnauwkeurigheid tot 10 mV/1 mA. Ondersteunt het bewerken en uitvoeren van golfvormen in de lijst, met vier geheugensnelkoppelingsparameters voor snelle en gemakkelijke toegang. Geïntegreerde beveiligingsfuncties omvatten bescherming tegen overspanning, overstroom, oververhitting en onderspanningsbeveiliging voor verbeterde veiligheid. Ingebouwd ontladingscircuit voorkomt resterende hoogspanningsrisico's wanneer de stroom wordt uitgeschakeld. USB-communicatie-interface met SCPI-protocolondersteuning, waardoor pc-programmering en afstandsbediening mogelijk zijn voor vereenvoudigd gebruikersbeheer. 2,8-inch TFT LCD-scherm Specificaties Model SPS6051 SPS3081 Nominaal vermogen (0°C-40°C) Spanning 0-61 V 0-31 V Stroom 0-5,1 A 0-8,1 A Vermogen 150 W 120 W Belastingsregeling Spanning ≤30 mV Stroom ≤20 mA Vermogensregeling Spanning ≤30 mV Stroom ≤20 mA Resolutie instellen Spanning 10 mV Stroom 1 mA Leesresolutie Spanning 10 mV Stroom 1 mA Instelnauwkeurigheid (25°C ±5°C) Spanning ≤0,05% ±20 mV ≤0,1% ±20 mV Stroom ≤0,05% ±20 mA ≤0,2% ±20 mA Leesnauwkeurigheid (25°C ±5°C) Stroom ≤0,05% ±20 mV ≤0,1% ±20 mV Spanning ≤0,05% ±20 mV ≤0,2% ±20 mA Rimpeling/ruis Spanning ≤30 mVp-p ≤30 mVp-p Spanning ≤4 mVrms ≤5 mVrms Stroom ≤10 mAp-p ≤30 mAp-p Uitgangstemperatuurcoëfficiënt (0°C-40°C) Spanning 100 ppm/°C Stroom 200 ppm/°C Teruglezen temperatuurcoëfficiënt Spanning 100 ppm/°C Stroom 200 ppm/°C Responstijd (50-100% nominale belasting) ≤1,0 ms Opslag 4 groepen gegevens Werktemperatuur 0-40°C Display 2,8-inch LCD-kleurenscherm Interface USB Afmetingen (B x H x D) 82 x 142 x 226 mm Gewicht 1,8 kg Inbegrepen 1x OWON SPS6051 Voeding 2x Testleads 1x Netsnoer 1x Manual Downloads Datasheet User Manual Programming Manual PC Software

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Multitasking and multiprocessing have become a very important topic in microcontroller-based systems, namely in complex commercial, domestic, and industrial automation applications. As the complexity of projects grows, more functionalities are demanded from the projects. Such projects require the use of multiple inter-related tasks running on the same system and sharing the available resources, such as the CPU, memory, and input-output ports. As a result of this, the importance of multitasking operations in microcontroller-based applications has grown steadily over the last few years. Many complex automation projects now make use of some form of a multitasking kernel. This book is project-based and its main aim is to teach the basic features of multitasking using the Python 3 programming language on Raspberry Pi. Many fully tested projects are provided in the book using the multitasking modules of Python. Each project is described fully and in detail. Complete program listings are given for each project. Readers should be able to use the projects as they are, or modify them to suit their own needs. The following Python multitasking modules have been described and used in the projects: Fork Thread Threading Subprocess Multiprocessing The book includes simple multitasking projects such as independently controlling multiple LEDs, to more complex multitasking projects such as on/off temperature control, traffic lights control, 2-digit, and 4-digit 7-segment LED event counter, reaction timer, stepper motor control, keypad based projects, car park controller, and many more. The fundamental multitasking concepts such as process synchronization, process communication, and memory sharing techniques have been described in projects concerning event flags, queues, semaphores, values, and so on.

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Specificaties Channels: 3 Total Power: 195 Watts Max. Voltage: 30 Volts Max. Current: 3 Amps Low ripple and noise: <350 ?Vrms/2 mVpp Excellent linear regulation rate and load regulation rate Fast transient response time: <50 ?s Some channels are isolated Standard OVP/OCP/OTP protection functions Standard timing output Built-in V,A,W measurements and waveform display Independent control for each channel 3.5 inch TFT display Inbegrepen 1x Rigol DP832 DC Power Supply 1x Power cord 1x USB cable

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The OWON SPE6103 is a 1-channel DC power supply (300 W) in a small body with features like over voltage and over current protection. It has a high resolution of 10 mV/1 mA. The 2.8' LCD displays the following information (constant voltage output, constant current output, cumulative running time, actual output power, channel output status, actual voltage output, actual current output).Features Small body for easy carry High resolution: 10 mV/1 mA List waveform editing output, editable 10 groups of timing output function Low ripple/noise Over voltage / over current protection Output voltage and current curve monitoring function Intelligent temperature control fan cooling 2.8-inch TFT LCD display USB communication interface, support SCPI Specifications Model SPE6102 SPE6103 Rated Output (0-40°C) Voltage 0-60 V 0-60 V Current 10 A 10 A Output Power 200 W 300 W USB Output 5 V/1 A (SPE Series) or suppout QC2.0, QC3.0, BC1.2, Apple, Huawei, Samsung fast charging protocols (optional) Load Regulation Voltage ?30 mV Current ?20 mA Power Regulation Voltage ?30 mV Current ?20 mA Setting Resolution Voltage 10 mV Current 1 mA Readback Resolution Voltage 10 mV Current 1 mA Value Resolution (within 12 months) (25 ±5°C) Voltage ?0.1% ±30 mV ?0.1% ±30 mV Current ?0.05% ±10 mA Readback Value Resolution (25 ±5°C) Voltage ?0.1% ±30 mV ?0.1% ±30 mV Current Ripple/Noise Voltage (Vp-p) ?50mVp-p ?50mVp-p Voltage (rms) ?5mVrms ?5mVrms Current (rms) ?30mAp-p Output temperature coefficient (0-40°C) Voltage 100ppm/°C Current 200ppm/°C Readback temperature coefficient Voltage 100ppm/°C Current 200ppm/°C Response Time (50-100% rated load) ?1.0ms Storage 4 groups of data Working Temperature 0-40°C Included 1x OWON SPE6102 1x Power Cord 1x Quick Guide 1x USB Cable 1x Fuse Downloads User Manual Programming Manual Software

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Elektor GREEN and GOLD members can download their digital edition here. Not a member yet? Click here. The RISC-V Open-Source Processor Architecture16 Boards and MCUs You Should Know An FPGA-Based Audio Player with Equalizer (1)Mixing Digital Audio with an Arduino MKR Vidor 4000 Laser Head for Pico-Based Sand ClockDrawing with Light Enter the STM32 Edge AI Contest A Multi-Sensor Environmental Monitoring System for PlantsWireless Measurement of Water Supply and Light Conditions Maixduino AI-Powered Automatic DoormanFace Detection with a Camera Embedded Electronics 2024AI Is Set to Redefine the Industry Charge-Based In-Memory Compute at EnCharge AI AI Inferencing at 10 Times Lower Power and 20 Fold Lower Cost Click Board Helps Develop and Train ML Models for Vibration Analysis The Elektor Mini-WheelieA Self-Balancing Robot Kit MCU, I See YouMCUViewer Open-Source Multiplatform Debugging Tool USB 2.0 IsolatorElectrically Isolated Connections for USB Devices Intervention Before DamagePredictive Maintenance in Practice SPoE – Electromagnetic CompatibilitySingle-Pair with Power-Over-Ethernet Through the Eyes of EMC Color TV: A Wonder of Its TimeCreating a New World ECG Graph MonitoringAn Implementation with Hexabitz Modules and an STM32CubeMonitor The Battle for AI at the Edge HaLow Hits Record 16-km Wi-Fi Distance at 900 MHz First CHERI RISC-V Embedded Chip and Early Access Programme Third-Generation Wildfire Detection Uses Satellite Links From Life’s ExperienceChoice Overload Starting Out in Electronics……Continues Filtering and Controls Tone Quasi-Analog ClockworkA Remake of an Elektor Classic A Modular Approach to Sensor TestingThe ESP32-S3-Based Sensor Evaluation Board 2025: An AI OdysseyThe Rise of Foundation Models and Their Role in Democratizing AI Raspberry Pi Standalone MIDI Synthesizer (1)Preparing a Platform for Some Edge AI Experiments Err-lectronicsCorrections, Updates, and Readers’ Letters Universal AI RISC-V Processor Does It All — CPU, GPU, DSP, FPGA CEO Interview: Ventiva’s Thin and Cool Tech Dual-Core Programming with a Raspberry Pi PicoVenture Into the World of Parallel Programming

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Le téléchargement intégral de ce numéro est disponible pour nos membres GOLD et GREEN sur le site Elektor Magazine ! Pas encore membre ? Cliquez ici. mise à jour du PbMonitor v2.0Surveillance de batterie avec un circuit analogique améliorée mesure de la latence audioUn outil autonome pour évaluer les erreurs et la latence de la transmission audio onde carrée vs. diagramme de BodeVérification des performances d’un appareil audio embedded world 2026 coder intelligemment avec l’IAL’IA dans le développement logiciel pour les électroniciens analyseur audio QA403Une précision accessible pour les professionnels et les amateurs d’audio EasyGimbalAutonomous Camera Tracking with AI, Stepper and Servo Motors carte breakout Sigfox (2)Envoi de messages protection de circuitsContrôle des surtensions avec des diodes TVS tests de batteriesDes approches innovantes à l’aube d’une nouvelle ère diagnostique audiotroniqueUn premier préampli CANopenTermExplorer les réseaux CAN avec un outil open source stabilisation des amplificateurs opérationnelsstabilisation-des-amplificateurs-operationnels projet 2.0Corrections, mises à jour et courrier des lecteurs conditionnement du signalAstuces pour adapter des plages de tension adaptateur TDR pour oscilloscopeLongueur, court-circuit, désadaptation : tester les câbles par réflectométrie ! sur le vifLED It Be oscillateur de haut-parleur et testeur de résonanceUn projet expérimental dédié aux haut-parleurs perspectives de la communauté Elektor sur le test et la mesure carte émetteur-récepteur audio ESP32 (5)Traitement audio et contrôle à distance 2026 : une odyssée de l’IAL’IA a un problème de contexte solutions de stockage par batterie pour installation solaire sur balconPetites batteries, grand impact

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Elektor GREEN and GOLD members can download their digital edition here. Not a member yet? Click here. The RISC-V Open-Source Processor Architecture16 Boards and MCUs You Should Know An FPGA-Based Audio Player with Equalizer (1)Mixing Digital Audio with an Arduino MKR Vidor 4000 Laser Head for Pico-Based Sand ClockDrawing with Light Enter the STM32 Edge AI Contest A Multi-Sensor Environmental Monitoring System for PlantsWireless Measurement of Water Supply and Light Conditions Maixduino AI-Powered Automatic DoormanFace Detection with a Camera Embedded Electronics 2024AI Is Set to Redefine the Industry Charge-Based In-Memory Compute at EnCharge AI AI Inferencing at 10 Times Lower Power and 20 Fold Lower Cost Click Board Helps Develop and Train ML Models for Vibration Analysis The Elektor Mini-WheelieA Self-Balancing Robot Kit MCU, I See YouMCUViewer Open-Source Multiplatform Debugging Tool USB 2.0 IsolatorElectrically Isolated Connections for USB Devices Intervention Before DamagePredictive Maintenance in Practice SPoE – Electromagnetic CompatibilitySingle-Pair with Power-Over-Ethernet Through the Eyes of EMC Color TV: A Wonder of Its TimeCreating a New World ECG Graph MonitoringAn Implementation with Hexabitz Modules and an STM32CubeMonitor The Battle for AI at the Edge HaLow Hits Record 16-km Wi-Fi Distance at 900 MHz First CHERI RISC-V Embedded Chip and Early Access Programme Third-Generation Wildfire Detection Uses Satellite Links From Life’s ExperienceChoice Overload Starting Out in Electronics……Continues Filtering and Controls Tone Quasi-Analog ClockworkA Remake of an Elektor Classic A Modular Approach to Sensor TestingThe ESP32-S3-Based Sensor Evaluation Board 2025: An AI OdysseyThe Rise of Foundation Models and Their Role in Democratizing AI Raspberry Pi Standalone MIDI Synthesizer (1)Preparing a Platform for Some Edge AI Experiments Err-lectronicsCorrections, Updates, and Readers’ Letters Universal AI RISC-V Processor Does It All — CPU, GPU, DSP, FPGA CEO Interview: Ventiva’s Thin and Cool Tech Dual-Core Programming with a Raspberry Pi PicoVenture Into the World of Parallel Programming

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USB-S/PDIF-INTERFACEdigitale audio-uitgang voor computer, laptop, tablet of smartphone MULTITASKING MET DE ESP32 (4)binaire semaforen TIMER VOOR HOOFDTELEFOONVERSTERKER DRAADLOZE TEMPERATUURSENSOR VOOR NIXIE BARGRAPH THERMOMETERmultifunctionele oplossing met ontwerptruc MULTITASKING MET DE RASPBERRY PIvoorbeeld: controller voor verkeerslichten OPEN-NETWERK WEERSTATION MK2deel 2: software DOMOTICA HELEMAAL NIET MOEILIJKmet ESPHome, Home Assistant & MySensors DE GEHEUGEN-BEELDBUISvreemde onderdelen AI VOOR BEGINNERS (3)een eigen neuraal netwerk PIC’S PROGRAMMEREN: VAN DE GROND AFeen sinus in assembler IKEA-HACKeen goedkope IKEA-lamp ‘tunen’ met NeoPixel-LED’s en WLAN LAAT JE HOBBYPROJECT NIET IN EEN HOEKJE VERSTOFFENaanbodzijde-tijdmanagement en spiraalontwikkeling ALLE BEGIN......hoeft niet zo moeilijk te zijn OOST WEST LAB BESTeen blik in het allerheiligste, waar interessante projecten worden geboren DE 8-BIT MICROCONTROLLER – EN DAARNAvraaggesprek met Tam Hanna WIE HET KLEINE NIET EERTuit de ideeënbus van Elektor REVIEW: OWON OW18E BLUETOOTH-MULTIMETER INTERACTIEFcorrecties & updates || vragen & antwoorden UIT HET LEVEN GEGREPENloodvrij solderen en Europese regelneverij VEELBELOVEND PROJECT: NIEUWE LCR-METER 50 HZ...2 MHZprecisie en gebruiksgemak ERROR ANALYSIStips en trucs: FMEA, grote stromen en meer DEVELOPER’S ZONEtips & trucs, vakkunstigheden en andere nuttige informatie REVIEW: SIGLENT SDL1020X-E ELEKTRONISCHE BELASTING HOOGSPANNINGSVOEDING MET KARAKTERISTIEKENSCHRIJVERspanningen tot 400 V instellen en karakteristieken van buizen en transistoren meten HEXADOKU SEPTEMBER/OKTOBER 2020 ANALOGE ELEKTRONICA ONTWERPENcase-study #2 – deel 1: theorie van analoge filters SCHEMA’S TEKENEN

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