Elektor GREEN and GOLD members can download their digital edition here. Not a member yet? Click here. Digital Load for High-Current TestingFrom Necessity to Innovation Vocal RemoverInstant Karaoke Circuit Audio A/B Selector With Gain ControlSwitches from Microphone to Line Inputs Better Charging for the LIR2032Be Kind to Your Coin Cells Touch Sensing Made SimpleA DIY Guide for Any Microcontroller Universal Infrared Remote SwitchA New Life for Old Remotes Microcontroller-Powered Moo BoxMaking Playful Sounds With a Microcontroller USB Battery Interface Powering Low-Draw Devices With Power BanksA “Stay Alive” Solution Small Class-A Audio Amplifier With Current OutputDrive Speakers with Current Instead of Voltage Pseudo-Balanced ModuleHigh CMRR with Unbalanced Audio Links Ni-MH Cells Automatic ChargerRefill All Your Battery Packs in One Go! Thyristor-Based Power Supply Protection Fingerprint Sensor SwitchA Useful Proof-of-Identity Device DC-DC 3-A Power ConverterUpgrade Your Fixed-Voltage Sources Remote Water Heater MonitorVoltage and Current Detection for AC Lines Attenuators for Audio Signals (1)Adjustable Via Jumpers Pimp My Car Battery Charger (Part 1)Don’t Throw It Away, Mod It! A Board for the Blue OnePCB for Alps Motorized Potentiometer with Feedback 50-Hz Reference from 60-Hz Mains VoltageHow to Use 50-Hz Electronics in 60-Hz Environments Digital IsolatorsRealizing Galvanic Isolation Easily Compact 12-W Hi-Fi Mono AmplifierSmall But Powerful LM386 Ramp Generator Three-Phase GeneratorWith Raspberry Pi Pico Door Opener for the Musically Talented Elektor Classic: Surf SynthesizerOcean Watersports Background Sound Generator (OWBSG) Pimp my Car Battery Charger (Part 2)Don’t Throw It Away, Mod It! Lamp Current MonitorWith a Raspberry Pi Pico Infrared Telegraphy Fnirsi SWM-10Repair Battery Packs With This Portable Intelligent Spot Welding Machine Stereo Audio Codec for the ESP32 and Co.No Need to Be Afraid of Audio Measurement Technology Tin Soldering TechniquesMake Them Well Right Away! Attenuators for Audio Signals (2)Switching Via Relays USB-C PowerDrawing Power from USB-C Power Adapters Three Circuits with Two and Three Counter ICs4017 ICs Working Together Active Components – The Diode A Timer For Ultra-Long DelaysSet It, and Forget It! Jack In and Jack OutA Useful Insert Option for Audio Circuits Power an ESP32 from a Single Li-ion Cell Hexadoku

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SD card quality is crucial for a good Raspberry Pi experience. Raspberry Pi's A2 microSD cards support higher bus speeds and command queuing, improving random read performance and narrowing the gap with NVMe SSDs. These cards are rigorously tested for optimal performance with Raspberry Pi models. Features Capacity: 64 GB Support for DDR50 and SDR104 bus speeds and command queueing (CQ) extension Speed Class: C10, U3, V30, A2 Random 4 KB read performance: 3,200 IOPS (Raspberry Pi 4, DDR50) 5,000 IOPS (Raspberry Pi 5, SDR104) Random 4 K write performance: 1,200 IOPS (Raspberry Pi 4, DDR50) 2,000 IOPS (Raspberry Pi 5, SDR104) Shock-proof, X-ray–proof, and magnet-proof microSDHC/microSDXC formats Downloads Datasheets

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SD card quality is crucial for a good Raspberry Pi experience. Raspberry Pi's A2 microSD cards support higher bus speeds and command queuing, improving random read performance and narrowing the gap with NVMe SSDs. These cards are rigorously tested for optimal performance with Raspberry Pi models. Features Capacity: 32 GB Support for DDR50 and SDR104 bus speeds and command queueing (CQ) extension Speed Class: C10, U3, V30, A2 Random 4 KB read performance: 3,200 IOPS (Raspberry Pi 4, DDR50) 5,000 IOPS (Raspberry Pi 5, SDR104) Random 4 K write performance: 1,200 IOPS (Raspberry Pi 4, DDR50) 2,000 IOPS (Raspberry Pi 5, SDR104) Shock-proof, X-ray–proof, and magnet-proof microSDHC/microSDXC formats Downloads Datasheets

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The Raspberry Pi Pico 2 is a new microcontroller board from the Raspberry Pi Foundation, based on the RP2350. It features a higher core clock speed, double the on-chip SRAM, double the on-board flash memory, more powerful Arm cores, optional RISC-V cores, new security features, and upgraded interfacing capabilities. The Raspberry Pi Pico 2 offers a significant boost in performance and features while maintaining hardware and software compatibility with earlier members of the Raspberry Pi Pico series. The RP2350 provides a comprehensive security architecture built around Arm TrustZone for Cortex-M. It incorporates signed boot, 8 KB of antifuse OTP for key storage, SHA-256 acceleration, a hardware TRNG, and fast glitch detectors. The unique dual-core, dual-architecture capability of the RP2350 allows users to choose between a pair of industry-standard Arm Cortex-M33 cores and a pair of open-hardware Hazard3 RISC-V cores. Programmable in C/C++ and Python, and supported by detailed documentation, the Raspberry Pi Pico 2 is the ideal microcontroller board for both enthusiasts and professional developers. Specifications CPU Dual Arm Cortex-M33 or dual RISC-V Hazard3 processors @ 150 MHz Memory 520 KB on-chip SRAM; 4 MB on-board QSPI flash Interfaces 26 multi-purpose GPIO pins, including 4 that can be used for AD Peripherals 2x UART 2x SPI controllers 2x I²C controllers 24x PWM channels 1x USB 1.1 controller and PHY, with host and device support 12x PIO state machines Input power 1.8-5.5 V DC Dimensions 21 x 51 mm Downloads Datasheet (Pico 2) Datasheet (RP2350)

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Over 45 Builds for the Legendary 555 Chip (and the 556, 558) The 555 timer IC, originally introduced by the Signetics Corporation around 1971, is sure to rank high among the most popular analog integrated circuits ever produced. Originally called the IC Time Machine, this chip has been used in many timer-related projects by countless people over decades. This book is all about designing projects based on the 555 timer IC. Over 45 fully tested and documented projects are presented. All projects have been fully tested by the author by constructing them individually on a breadboard. You are not expected to have any programming experiences for constructing or using the projects given in the book. However, it’s definitely useful to have some knowledge of basic electronics and the use of a breadboard for constructing and testing electronic circuits. Some of the projects in the book are: Alternately Flashing Two LEDs Changing LED Flashing Rate Touch Sensor On/Off Switch Switch On/Off Delay Light-Dependent Sound Dark/Light Switch Tone Burst Generator Long Duration Timer Chasing LEDs LED Roulette Game Traffic Lights Continuity Tester Electronic Lock Switch Contact Debouncing Toy Electronic Organ Multiple Sensor Alarm System Metronome Voltage Multipliers Electronic Dice 7-Segment Display Counter Motor Control 7-Segment Display Dice Electronic Siren Various Other Projects The projects given in the book can be modified or expanded by you for your very own applications. Electronic engineering students, people engaged in designing small electronic circuits, and electronic hobbyists should find the projects in the book instructive, fun, interesting, and useful.

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This bundle includes both volumes of "KiCad Like a Pro" (4th edition 2024). In Fundamentals and Projects (normal price: €49.95), you'll learn how to use KiCad through a practical approach, helping you quickly become productive and start designing your own boards. Advanced Projects and Recipes (normal price: €44.95) allows you to practice your new KiCad skills by challenging yourself with a series of real-world projects. The latest iteration of KiCad, the world’s best free-to-use Printed Circuit Board tool, is packed with features usually found only in expensive commercial CAD tools. This modern, cross-platform application suite built around schematic and design editors, with auxiliary applications is a stable and mature PCB tool. KiCad 8 is a perfect fit for electronic engineers and makers. Here are the most significant improvements and features in KiCad 8, both over and under the hood: Modern user interface, completely redesigned from earlier versions Improved and customizable electrical and design rule checkers Theme editor allowing you to customize KiCad on your screen Ability to import projects from Eagle, CADSTART, and more Python scripting API Improved integrated SPICE circuit simulator Multi-sheet schematics Filters define selectable elements Enhanced interactive router helps you draw single tracks and differential pairs with precision New or enhanced tools to draw tracks, measure distances, tune track lengths, etc. Advanced interactive router Built-in bill of materials generator Realistic ray-tracing capable 3D viewer Customizable teardrops Plug-in manager for quick installation of themes, libraries and functionalities such as autorouters and BOM generators The first book KiCad Like A Pro – Fundamentals and Projects will teach you to use KiCad through a practical approach. It will help you become productive quickly and start designing your own boards. Example projects illustrate the basic features of KiCad, even if you have no prior knowledge of PCB design. The author describes the entire workflow from schematic entry to the intricacies of finalizing the files for PCB production and offers sound guidance on the process. The second book KiCad Like A Pro – Advanced Projects and Recipes will help you to practice your new KiCad skills by challenging you in a series of real-world projects. The projects are supported by a comprehensive set of recipes with detailed instructions on how to achieve a variety of simple and complex tasks. Design the PCBs for a solar power supply, an LED matrix array, an Arduino-powered datalogger, and a custom ESP32 board. Understand the finer details of the interactive router, how to manage KiCad project teams with Git, how to use an autorouter on 2 and 4-layer PCBs, and much more.

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The PTS200 is a powerful, ESP32-controlled portable smart soldering iron with an adjustable output power range of 18 to 100 W. Paired with a 100-watt power supply and a 4-ohm soldering tip, this soldering iron eliminates the need for a traditional soldering station, fully meeting the demands of various soldering tasks. It features 4 adjustable operating voltages, allowing it to be configured for different power sources. Features 100 W Power Output: Experience rapid heating with a powerful 100 W output, reaching 450°C (842°F) in just 8 seconds for quick and efficient soldering. Universal Tip Compatibility: Compatible with T12/TS100/TS101 tips, making the PTS200 adaptable to a wide range of soldering tasks. Fast Charging Protocols: Supports PD3.0 and QC2.0/QC3.0, enabling power from fast charging adapters or power banks, ideal for soldering on the go. Automatic Sleep Function: Extends the lifespan of the soldering tips. The superfast wake-up feature ensures the soldering iron is always ready when needed. Ergonomic Design: Crafted with a CNC-machined metal body, the PTS200 offers both ergonomic comfort and reliable heat dissipation. Specifications Output Power 18-100 W Input Voltage (adjustable) • 9 V/2 A• 12 V/1.5 A• 15 V/3 A• 20 V/5 A Temperature Range 50-450°C (122-842°F) Heating Time 8 seconds Temperature Stability ±2% Microcontroller ESP32-S2 Display 0.96" OLED (128 x 64 pixels) Power Supply USB-C Special Features • Automatic sleep• CNC metal shell• Compatible with T12/TS101/TS100/Pinecil soldering tips• 20 V/5 A (100 W maximum power) Included PTS200 Soldering Iron Soldering tip BC2 (4 Ω) Soldering tip K (4 Ω) Soldering tip B2 (4 Ω) Soldering tip I (4 Ω) 100 W power supply (EU) USB-C cable Software Firmware

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The ICL8038 signal generator delivers versatile waveforms, including sine, triangle, square, and forward/reverse sawtooth, making it suitable for a wide range of applications. Powered by the ICL8038 chip and high-speed operational amplifiers, it ensures exceptional precision and signal stability. With a frequency range of 5 Hz to 400 kHz, it supports applications from audio to radio frequencies. Its adjustable duty cycle, ranging from 2% to 95%, allows for precise waveform customization to meet various needs. The DIY kit is beginner-friendly, featuring through-hole components for easy assembly. It includes all necessary parts, an acrylic shell, and a detailed manual, providing everything required to build and use the signal generator efficiently. Specifications Frequency range 5 Hz~400 KHz (adjustable) Power supply voltage 12 V~15 V Duty cycle range 2~95% (adjustable) Low distortion sine wave 1% Low temperature drift 50 ppm/°C Output triangular wave linearity 0.1% DC bias range −7.5 V~7.5 V Output amplitude range 0.1 V~11 VPP (working voltage 12 V) Dimensions 89 x 60 x 35 mm Weight 81 g Included PCB incl. all necessary components Acrylic shell Manual

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The DIY Mini Digital Oscilloscope Kit (with shell) is an easy-to-build kit for a tiny digital oscilloscope. Besides the power switch, it has only one other control, a rotary encoder with a built-in pushbutton. The kit's microcontroller comes preprogrammed. The 0.96" OLED display has a resolution of 128 x 64 pixels. The oscilloscope features one channel that can measure signals up to 100 kHz. The maximum input voltage is 30 V, the minimum voltage is 0 V. The kit consists of through-hole components (THT) are surface-mount devices (SMD). Therefore, assembling the kit means soldering SMD parts, which requires some soldering experience. Specifications Vertical range: 0 to 30 V Horizontal range: 100 µs to 500 ms Trigger type: auto, normal and single Trigger edge: rising and falling Trigger level: 0 to 30 V Run/Stop mode Automatic frequency measurement Power: 5 V micro-USB 10 Hz, 5 V sinewave output 9 kHz, 0 to 4.8 V square wave output Display: 0.96-inch OLED screen Dimensions: 57 x 38 x 26 mm Downloads Documentation

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This DIY Color Display Kit is a fun and educational project for makers of all ages. It is a great way to learn about electronics, programming, and improve your soldering skills. Microcontroller As this kit ships with the ePulse Feather ESP32 development board, the kit thereby inherits all the great features of said devkit. Display The large 3.5" 320x480 color display also sports a high-precision capacitive touch interface. Contrary to resistive touch interfaces that often work best when using a stylus this auto-calibrated module offers a smartphone-like user experience. Connector PCB The connectors for the display are already pre-assembled on the connector PCB, as those require a more experienced hand at the soldering iron. Hence, for the inexperienced solderer this offers the best of both worlds. Also, you may choose to not add the on-off switch or the Grove connector; both are optional. The connector PCB offers extendability in two ways: the broken out pins of the microcontroller and the connector for the Grove system. Specifications Microcontroller ESP32 Module ePulse Feather Display Resolution 320 x 480 Display Driver ILI9488 Touch Display Capacitive Included 1x ePulse Feather, low-power ESP32 development board 1x 3.5" 320x480 Color Display (ILI9488, TFT) with capacitive touch Interface (FT6236) Color Kit Grande Connector Board 1x Custom connector PCB to connect the ESP32 and the display Header Pins 1x Set of special pin headers (to be soldered to connector PCB Color Kit Power Switch) 1x On-off switch (to be optionally soldered to connector PCB SMD Grove Connector) 1x Grove connector (to be optionally soldered to connector PCB Color Kit Grande Foam Stickers) 4x Double-sided foam adhesive to secured display to PCB Downloads Schematics Documentation

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An easy way to hold parts to the bottom of a PCB while soldering PartLift holds thru hole parts in place to free up your hands while you solder the legs. A simple but useful tool to go along with your Stickvise. The base pad is non-slip silicone foam, the body of the tool is ABS which provides very light spring tension to hold your part in place. The tip of the tool is made from high temperature silicone that withstands soldering temperatures without being damaged. Features PartLift holds thru hole parts in place during soldering Use with a Stickvise or any low profile PCB holder The tip is silicone that withstands soldering temperatures The base pad is non-slip silicone foam Specifications Material Silicone Dimensions 109 x 40 x 40 mm Weight 59 g

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The ATuMan LI1 Laser Line Projection Angle Gauge is a versatile tool designed for precise angle measurements. It combines the functionalities of an inclinometer, protractor, and laser level, making it suitable for various applications in construction, decoration, and DIY projects. Features Real-time angle measurement Double-sided HD LED color screen Frosted aluminum body USB-C fast charging Angle levelling Laser line projection Adjustable bracket for easy fixation IP54 waterproof and dustproof Specifications Indoor Distance ≤10 m Measurement Accuracy ±0.5° Measurement Modes Absolute angle and relative angle Laser Wavelength 660 nm Laser Class Class II Protection Level IP54 (dustproof and splash-resistant) Battery 730 mAh Lithium battery (built-in) Charging Interface USB-C Operating Temperature −10~50°C Dimensions 120 x 20 x 35 mm (Projector)103 x 95 mm (Bracket) Weight 95 g Included 1x LI1 Laser Projection Angle Meter (Dual Laser) 1x Bracket

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This NVMe M.2 2242 SSD (128 GB) is already pre-installed with Raspberry Pi OS for immediate use with the Raspberry Pi 5 M.2 HAT+. Features Form factor: M.2 2242 M-Key NVMe SSD Pre-loaded with Raspberry Pi OS High level of ability to endure shock, vibration, and high temperature SMART TRIM support PCIe Interface: PCIe Gen3 x2 Compliance: NVMe 1.3, PCI Express Base 3.1 Capacity: 128 GB Speed: Read: Up to 1700 MB/s Write: Up to 600 MB/s Shock: 1500 G/0.5 ms Operation temperature: 0°C-70°C Up to 30x faster than a typical hard disk drive Boosts burst write performance, making it ideal for typical computer workloads Faster boot-up, shutdown, application load, and response for Raspberry Pi Downloads Datasheet

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The SUNKKO 737G+ spot welder is a powerful and versatile tool designed for seamless and precise welding, particularly for 18650 battery packs. Prioritizing safety, it comes equipped with a 30 A fuse for 220 V, ensuring protection against potential electrical hazards, giving users peace of mind during use. For enhanced adaptability, the welder offers the option of automatic or foot pedal control, allowing you to switch between modes based on your needs and preferences. Whether you're working on intricate projects or larger tasks, this flexibility ensures you have full control at all times. With a robust 4.3 KW rated capacity, the SUNKKO 737G+ delivers the power needed for efficient and effective welding. Its advanced pulse control system features four pulse time settings ranging from 2 to 20 milliseconds, and eight extended pulse time settings between 8 and 80 milliseconds. This level of precision gives you the ability to tailor the welding process to each specific task, ensuring high-quality results every time. Furthermore, the welder supports a maximum welding thickness of 0.35 mm, making it suitable for a variety of battery sizes and materials. This versatility, combined with its advanced features, makes the SUNKKO 737G+ an excellent choice for both professionals and hobbyists seeking reliable, efficient, and safe welding performance. IMPORTANT: This device requires a 25 A circuit breaker. Do not use with a smaller circuit breaker! Features Max. power output: 4.3 kW (Instantaneous) Input voltage: 220 V Welding current: 120-1200 A Single pulse time: 5 ms Max. pulse quantity: 18 Fuse: 30 A Max. welding thickness: 0.35 mm Automatic spot welding Foot pedal control welding Dimensions: 14 x 25 x 20 cm Weight: 7 kg Included 1x 737G+ spot welding machine 1x S70BN mobile welding pen 1x Copper welding rods 1x Mini grinder with USB cable 1x Copper welding pins for mobile pen 1x Battery fixture 1x Foot pedal 2x Fuses 1x Hexagon wrench 50x Nickel plated steel (0.15 x 8 x 100 mm) 50x Nickel plated steel (0.1 x 4 x 100 mm) 1x Manual Downloads Manual

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This fiberglass outdoor antenna is optimized for receiving signals in the 868 MHz ISM band, supporting technologies such as Sigfox, LoRa, Mesh Networks, and Helium. The antenna consists of a half-wave dipole with 4.4 dBi gain, encapsulated inside a fiberglass radome with an aluminum mounting base. Specifications Frequency 868-870 MHz Antenna type Dipole 1/2 wave Connector N female Installation type Mast Diam 35-60 mm (mounting bracket included) Gain 4.4 dBi SWR ≤1.5 Type of Polarization Vertical Maximum power 10 W Impedance 50 Ohms Dimensions 52.5 cm Tube diameter 26 mm Base antenna 32 mm Operating temperature −30°C to +60°C Included ISM Band Antenna (868 Mhz) Mast bracket (for installation on a 35 to 60 mm diameter mast)

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This ultrasonic distance sensor (ME007-ULA V1) offers high performance with a robust, waterproof probe. Operating on the principle of ultrasonic echo ranging, the sensor determines the distance to a target by measuring the time elapsed between sending a pulse and receiving the echo. Its non-contact design allows it to detect a wide range of materials, including transparent or non-ferrous objects, metals, non-metals, liquids, solids, and powders. Specifications Detecting Distance 27~800 cm Output Interface RS232, Voltage Analog Operating Voltage 5-12 V Average Current <10 mA Operating Temperature −15~60°C Dimensions 60 x 43 x 31 mm

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Mastering PCB design with real-world projects This book builts on KiCad Like a Pro – Fundamentals and Projects and aims to help you practice your new KiCad skills by challenging you in a series of real-world projects. The projects are supported by a comprehensive set of recipes with detailed instructions on how to achieve a variety of simple and complex tasks. Design the PCBs for a solar power supply, an LED matrix array, an Arduino-powered datalogger, and a custom ESP32 board. Understand the finer details of the interactive router, how to manage KiCad project teams with Git, how to use an autorouter on 2 and 4-layer PCBs, and much more. KiCad 8 is a modern, cross-platform application suite built around schematic and design editors. This stable and mature PCB tool is a perfect fit for electronic engineers and makers. With KiCad 8, you can create PCBs of any complexity and size without the constraints associated with the commercial packages. Here are the most significant improvements and features in KiCad 8, both over and under the hood: Modern user interface, completely redesigned from earlier versions Improved and customizable electrical and design rule checkers Theme editor allowing you to fully customize the look of KiCad on your screen Ability to import projects from Eagle, CADSTART, and more An improved and tightly integrated SPICE circuit simulator Autorouting with the Freerouting plugin Filters define which elements of a layout are selectable Enhanced interactive router helps you draw single tracks and differential pairs with precision New or enhanced tools to draw tracks, measure distances, tune track lengths, etc. Enhanced tool for creating filled zones A customizable coordinate system facilitates data exchange with other CAD applications Realistic ray-tracing capable 3D viewer Differential pair routing Rich repositories of symbol, footprint, and 3D shape libraries Python scripting API for programmatic customization and extensions Improved footprint wizard for fast custom footprints

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Getting started with the world’s best open-source PCB tool The latest iteration of KiCad, the world’s best free-to-use Printed Circuit Board tool, is packed with features usually found only in expensive commercial CAD tools. This modern, cross-platform application suite built around schematic and design editors, with auxiliary applications is a stable and mature PCB tool. KiCad 8 is a perfect fit for electronic engineers and makers. Here are the most significant improvements and features in KiCad 8, both over and under the hood: Modern user interface, completely redesigned from earlier versions Improved and customizable electrical and design rule checkers Theme editor allowing you to customize KiCad on your screen Ability to import projects from Eagle, CADSTART, and more Python scripting API Improved integrated SPICE circuit simulator Multi-sheet schematics Filters define selectable elements Enhanced interactive router helps you draw single tracks and differential pairs with precision New or enhanced tools to draw tracks, measure distances, tune track lengths, etc. Advanced interactive router Built-in bill of materials generator Realistic ray-tracing capable 3D viewer Customizable teardrops Plug-in manager for quick installation of themes, libraries and functionalities such as autorouters and BOM generators This book will teach you to use KiCad through a practical approach. It will help you become productive quickly and start designing your own boards. Example projects illustrate the basic features of KiCad, even if you have no prior knowledge of PCB design. The author describes the entire workflow from schematic entry to the intricacies of finalizing the files for PCB production and offers sound guidance on the process. Further full-fledged projects, of incremental difficulty, will be presented in a second book, together with a variety of advanced recipes.

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The ZD-5L Hot Glue Gun is a versatile and easy-to-use tool designed for household, DIY, and professional use. It features a compact and lightweight design for comfortable handling, and its built-in stand ensures safe and stable operation. Whether you're a DIY enthusiast or a professional, this Glue Gun is a perfect addition to your toolkit, an efficient and practical solution for bonding, repairing, and creating. It is ideal for various materials like glass, cardboard, metal, plastic, leather, fabric and more. The ZD-5L uses 7.2 mm glue sticks. It is powered by an 18650 battery and charged via USB-C. Specifications Charging Voltage 5 V DC Charging Current Adaptive, 2 A (max) Charging Interface USB-C Battery 18650 Lithium Glue Stick 7.2 mm OD Heat-up time approx. 2 min. Time of Use approx. 60 min. Sleep Time 5 min. without action Included 1x ZD-5L Glue Gun 1x 18650 Lithium battery (2200 mAh) 2x Glue Sticks (10 cm) 1x USB cable

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The FR01D (2-in-1) thermal imaging camera and multimeter is a compact and lightweight solution that simplifies diagnostic and maintenance tasks. The one-click function allows you to switch effortlessly between thermal imaging and multimeter mode, giving you two important tools in one portable device. The multimeter is capable of measuring DC and AC voltage, resistance, diode checks, continuity testing, and capacitance. The FR01D has a 2.8-inch touchscreen with a resolution of 320 x 480 pixels. The device is powered by an integrated rechargeable lithium battery and can be charged via USB. With the FR01D, you can inspect and maintain circuit boards, check power supplies, repair electronic devices, and overhaul household appliances. Its compact size, multifunctionality, and user-friendliness make the FR01D the ideal companion for electronics and maintenance technicians. General Specifications Display size 2.8" (320 x 480) Touchscreen Resistive Data transmission USB-C Image storage format BMP Battery Li-ion battery Storage temperature −20°C～60°C（−4°F～140°F) Operating temperature 0°C～50°C（32°F～122°F) Operating humidity <85% RH Dimensions 134 x 69 x 25 mm Weight 130 g Thermal Imaging Specifications Sensor Vanadium oxide (VOx) Image capture frequency 25 Hz Thermal imaging pixels 192 x 192 Field of View (FOV) 50.0°(H) x 50°(V) / 72.1°(D) Temperature range −20°C ~ +550°C (−4°F～1022°F) Gain mode Auto Accuracy ±2°C or ±2% Measurement resolution 0.1°C / 0.1°F Multimeter Specifications DC input voltage (max.) 1000 V AC input voltage (max.) 750 V Resistance (max.) 99.99 MΩ Capacitance (max.) 99.99 mF Duty cycle test range 0.1% ~ 99.9% Diode test range 0 V ~ 3 V Continuity test 999.9 Ω Display 9999 counts (Refreshes 3x per second) Accuracy Function Range Resolution Accuracy AC Voltage 400 mV 0.1 mV 2% +3 9.999 V 0.001 V 1.0% +3 99.99 V 0.01 V 999.9 V 0.1V DC Voltage 400 mV 0.1 mV 2% +3 9.999 V 0.001 V 1.0% +3 99.99 V 0.01 V 999.9 V 0.1 V Resistance 999.9 Ω 0.1 Ω 0.5% +3 9.999 KΩ 0.001 kΩ 99.99 KΩ 0.01 kΩ 999.9 KΩ 0.1 kΩ 9.999 MΩ 0.001 MΩ 99.99 MΩ 0.01 MΩ 1.5% +3 Diode Test 3.000 V 0.001 V 10% Capacitance 9.999 nF 0.001 nF 2% +5 99.99 nF 0.01 nF 999.9 nF 0.1 nF 9.999 uF 0.001 uF 99.99 uF 0.01 uF 999.9 uF 0.1 uF 9.999 mF 0.001 mF 5% +5 99.99 mF 0.01 mF Included 1x FR01D IR-Camera and Multimeter 2x Test Leads 1x USB Cable 1x Manual

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The Elektor Audio DSP FX Processor combines an ESP32 microcontroller and an ADAU1701 Audio DSP from Analog Devices. Besides a user-programmable DSP core, the ADAU1701 has high-quality analog-to-digital and digital-to-analog converters built-in and features an I²S port. This makes it suitable as a high-quality audio interface for the ESP32. Programs for the ESP32 can be created with Arduino, Platform IO, CMake or by using the Espressif IDF in another way. Programs for the ADAU7101 audio DSPs are created with the free visual programming tool SigmaStudio by dragging and dropping pre-defined algorithm blocks on a canvas. Applications Bluetooth/Wi-Fi audio sink (e.g. loudspeaker) & source Guitar effect pedal (stomp box) Music synthesizer Sound/function generator Programmable cross-over filter for loudspeakers Advanced audio effects processor (reverb, chorus, pitch shifting, etc.) Internet-connected audio device DSP experimentation platform Wireless MIDI MIDI to CV converter and many more... Specifications ADAU1701 28-/56-bit, 50-MIPS digital audio processor supporting sampling rates of up to 192 kHz ESP32 32-bit dual-core microcontroller with Wi-Fi 802.11b/g/n and Bluetooth 4.2 BR/EDR and BLE 2x 24-bit audio inputs (2 V RMS, 20 kΩ) 4x 24-bit audio outputs (0.9 V RMS, 600 Ω) 4x Control potentiometer MIDI in- and output I²C expansion port Multi-mode operation Power supply: 5 V DC USB or 7.5-12 V DC (barrel jack, center pin is GND) Current consumption (average): 200 mA Included 1x ESP32 Audio DSP FX Processor board (assembled) 1x ESP32-PICO-KIT 2x Jumpers 2x 18-pin headers (female) 4x 10 KB potentiometers Downloads Documentation GitHub

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The HT-M00 is a dual-channel gateway that is specifically designed to cater to smart family LoRa applications that work with less than 30 LoRa nodes. The gateway has been built around two SX1276 chips that are driven by ESP32. To enable monitoring of 125 KHz SF7~SF12 spreading factor, a software mixer has been developed, which is commonly referred to as a baseband simulation program. The software mixer is a critical component that enables the HT-M00 gateway to operate with high efficiency. It is designed to simulate baseband signals, which are then mixed with the radio frequency signals to produce the desired output. The software mixer has been developed with great care and precision, and has undergone rigorous testing to ensure that it is capable of delivering accurate and reliable results. Features ESP32 + SX1276 Emulates LoRa demodulators Automatic adaptive spread spectrum factor, SF7 to SF12 for each channel is optional Maximum output: 18 ±1dBm Support for LoRaWAN Class A, Class C protocol Specifications MCU ESP32-D0WDQ6 LoRa Chipset SX1276 LoRa Band 863~870 MHz Power Supply Voltage 5 V Receiving Sensitivity -110 dBm @ 300 bps Interface USB-C Max. TX Power 17dB ±1dB Operating Temperature −20~70°C Dimensions 30 x 76 x 14 mm Included 1x HT-M00 Dual Channel LoRa Gateway 1x Wall bracket 1x USB-C cable Downloads Manual Software Documentation

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The CubeCell series is designed primarily for LoRa/LoRaWAN node applications. Built on the ASR605x platform (ASR6501, ASR6502), these chips integrate the PSoC 4000 series MCU (ARM Cortex-M0+ Core) with the SX1262 module. The CubeCell series offers seamless Arduino compatibility, stable LoRaWAN protocol operation, and straightforward connectivity with lithium batteries and solar panels. The HTCC-AB02S is a developer-friendly board with an integrated AIR530Z GPS module, ideal for quickly testing and validating communication solutions. Features Arduino compatible Based on ASR605x (ASR6501, ASR6502), those chips are already integrated the PSoC 4000 series MCU (ARM Cortex M0+ Core) and SX1262 LoRaWAN 1.0.2 support Ultra low power design, 21 uA in deep sleep Onboard SH1.25-2 battery interface, integrated lithium battery management system (charge and discharge management, overcharge protection, battery power detection, USB/battery power automatic switching) Good impendence matching and long communication distance Onboard solar energy management system, can directly connect with a 5.5~7 V solar panel Micro USB interface with complete ESD protection, short circuit protection, RF shielding, and other protection measures Integrated CP2102 USB to serial port chip, convenient for program downloading, debugging information printing Onboard 0.96-inch 128x64 dot matrix OLED display, which can be used to display debugging information, battery power, and other information Using Air530 GPS module with GPS/Beidou Dual-mode position system support Specifications Main Chip ASR6502 (48 MHz ARM Cortex-M0+ MCU) LoRa Chipset SX1262 Frequency 863~870 MHz Max. TX Power 22 ±1 dBm Max. Receiving Sensitivity −135 dBm Hardware Resource 2x UART1x SPI2x I²C1x SWD3x 12-bit ADC input8-channel DMA engine16x GPIO Memory 128 Kb FLASH16 Kb SRAM Power consumption Deep sleep 21 uA Interfaces 1x Micro USB1x LoRa Antenna (IPEX)2x (15x 2.54 Pin header) + 3x (2x 2.54 Pin header) Battery 3.7 V lithium battery (power supply and charging) Solar Energy VS pin can be connected to 5.5~7 V solar panel USB to Serial Chip CP2102 Display 0.96" OLED (128 x 64) Operating temperature −20~70°C Dimensions 55.9 x 27.9 x 9.5 mm Included 1x CubeCell HTCC-AB02S Development Board 1x Antenna 1x 2x SH1.25 battery connector Downloads Datasheet Schematic GPS module (Manual) Quick start GitHub

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LoRaWAN is beneficial, but sometimes it is unnecessary, difficult, or expensive to implement a LoRaWAN network, especially when considering cloud integration. For example, monitoring soil moisture in your backyard or tracking conditions in your farm's greenhouse may not require a full LoRaWAN setup. This LoRa receiver is designed to work with Makerfabs SenseLora modules. It receives LoRa signals and forwards them to a computer, allowing the data to be displayed, recorded, and analyzed on the computer. Downloads Manual Software

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