The FNIRDSI DSO-TC4 is a multifunctional transistor oscilloscope that is both comprehensive and practical. It is designed for use in maintenance and R&D applications, integrating an oscilloscope, transistor tester, and signal generator into a single device. Features Equipped with a 2.8-inch TFT color screen for a clear and intuitive display Built-in high-capacity rechargeable lithium battery (1500 mAh) with a standby time of up to 4 hours Compact and lightweight, ideal for mobile use Specifications Oscilloscope Analog Bandwidth 10 MHz Real-Time Sampling Rate 48 MSa/s Input Impedance 1 MΩ Coupling Mode AC/DC Test Voltage Range 1:1 Probe: 80 Vpp (+40 V) 10:1 Probe: 800 Vpp (+400 V) Vertical Sensitivity 10 mV/div~10 V/div (X1 range) Vertical Displacement Adjustable with indication Time Base Range 50ns~20s Trigger Mode Auto/Normal/Single Trigger Type Rising edge, Falling edge Trigger Level Adjustable with indication Waveform Freeze Yes (HOLD function) Automatic Measurement Max, Min, Avg, RMS, Vpp, Frequency, Cycle, Duty Cycle Component Tester Transistor Amplification factor "hfe"; Base-Emitter voltage "Ube", Ic/Ie, Collector-Emitter reverse leakage current "Iceo", Ices, Forward voltage drop of protection diode "Uf" Diode Forward voltage drop <5 V (Forward voltage drop, Junction capacitance, Reverse leakage current) Zener Diode 0.01~32 V Reverse Breakdown Voltage (K-A-A Test Area) Field-Effect Transistor (FET) JFET: Gate capacitance "Cg", Drain current Id under "Vgs", Forward voltage drop of protection diode "Uf" IGBT: Drain current Id under Vgs, Forward voltage drop of protection diode Uf MIOSTET: Threshold voltage "Vt", Gate capacitance "Cg", Drain-Source resistance "Rds", Forward voltage drop of protection diode "Uf" Unidirectional SCR Trigger voltage <5V, Gate level (Gate voltage) Bidirectional SCR Trigger current <6mA (Gate voltage) Capacitor 25pF~100mF, Capacitance value, Loss factor "Vloss" Resistor 0.01Ω~50MΩ Inductor 10μH~1000μH, DC resistance DS18B20 Temperature sensor, Pins: GND, DQ, VDD DHT11 Temperature and humidity sensor, Pins: VDD, DATA, GND Signal Generator Output Waveform Supports 13 waveform outputs Waveform Frequency 0-50 KHz Square Wave Duty Cycle 0-100% Waveform Amplitude 0.1-3.0 V General Display 2.8-inch TFT color screen Backlight Brightness adjustable Power Supply USB-C (5 V/1 A） Battery 3.7 V/1500 mAh Languages English, German, Spanish, Portuguese, Russian, Chinese, Japanese, Korean Dimensions 90 x 142 x 27.5 mm Weight 186 g Included 1x FNIRSI DSO-TC4 (3-in-1) Oscilloscope (10 MHz) 1x P6100 Oscilloscope probes (10X) 1x Alligator clip probe 3x Test hooks 1x Adapter 1x USB-C charging cable 1x Manual Downloads Manual Firmware V0.0.3 (+V1.0.9)

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EASTER SALE: Order the Geekworm KVM-A3 Kit now and receive the e-book Raspberry Pi Full Stack (worth €35) for FREE! KVM stands for Keyboard, Video, and Mouse and it is a powerful open-source software that enables remote access via Raspberry Pi. This KVM-A3 kit is designed based on the Raspberry Pi 4. With it, you can turn your computer on or off, restart it, configure the UEFI/BIOS, and even reinstall the operating system using a virtual CD-ROM or flash drive. You can either use your own remote keyboard and mouse, or let KVM simulate a keyboard, mouse, and monitor – presented through a web browser as if you were directly interacting with the remote system. It's true hardware-level access with no dependency on remote ports, protocols, or services! Features Designed especially for KVM (an open and affordable DIY IP-KVM based on Raspberry Pi) Compatible with Raspberry Pi 4 (not included) Fully compatible with PiKVM V3 OS Control a server or computer using a web browser HDMI Full HD capture based on the TC358743 chip OTG keyboard and mouse support; mass storage drive emulation Hardware Real-Time Clock (RTC) with CR1220 coin battery socket Equipped with a cooling fan to dissipate heat from the Raspberry Pi Features solid-state relays to protect Raspberry Pi GPIO pins from computer and ESD spikes ATX control via RJ45 connector: switch the machine on or off, reset it, and monitor HDD and power LED status remotely 10-pin SH1.0 connector reserved for future I²S HDMI audio support 4-pin header and spacers reserved for I²C OLED display Included KVM-A3 Metal Case for Raspberry Pi 4 X630 HDMI to CSI-2 Module (for video capture) X630-A3 Expansion Board (provides Ethernet, cooling, RTC, power input, etc.) X630-A5 Adapter Board (installed inside the PC case; connects the computer motherboard to the IO panel cable of the PC case) 0.96-inch OLED Display (128 x 64 pixels) Ethernet Cable (TIA/EIA-568.B standard; also serves as the ATX control signal cable) Downloads Wiki PiKVM OS

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This Rework Station Bundle, consisting of the ZD-8968 Hot Air Rework Station and the ZD-11P PCB holder, offers precise temperature control, adjustable airflow, and a stable hold for your circuit board. The ZD-8968 Hot Air Rework Station is a high-performance device designed for precision desoldering and rework tasks with SMD components. It features a wide temperature range of 100-500°C (212-932°F), with adjustable air and temperature control, a clear LED display, and an automatic sleep mode for enhanced safety and efficiency. The ZD-11P PCB Holder is equipped with 5 adjustable 360° rotatable goosenecks (4 with alligator clips, 1 with flashlight holder + flashlight), providing additional flexibility and stability. It securely holds the PCB in place, making the handling of SMD components easier and more precise. Features 300 W heating power ensures quick heat-up Wide temperature range 100-500°C (212-932°F) allows precise control Closed-loop sensor and MCU zero-crossing design ensure accurate and stable temperature regulation. The hot air pump handle includes a built-in sensor that switches to Working Mode when picked up and to Standby Mode when placed back in the holder. Automatic standby mode activates after 10 minutes of inactivity. Automatic cooling system and deferred power-off function protect the heating element. Brushless motor fan provides quiet operation, smooth airflow, and an extended lifespan. High-quality heating element doubles working efficiency and saves energy. LED digital display for clear monitoring of temperature settings. Simple buttons for adjusting air volume and temperature. Switching between °C and °F Heat-resistant stand with hot air gun holder, 5 flexible adjustable arms with alligator clips and a flashlight (AA battery not included) Specifications ZD-8968 Hot Air Rework Station Power 300 W Temperature range 100-500°C (212-932°F) Power supply 220-240 V AC/50 Hz Weight 1.2 kg ZD-11P PCB Holder Base (Dimensions) 210 x 134 mm Metal rod (Height) 250 mm Included Base, metal rod, 4 gooseneck arms with alligator clips, 1 gooseneck arm with flashlight holder Included 1x ZD-8968 Hot Air Rework Station 1x ZD-11P PCB Holder (stand with soldering iron holder with 5 adjustable arms, 4 with alligator clips and 1 with flashlight holder) 1x Flashlight (AA battery not included) 3x Hot air nozzles (79-7911, 79-7912, 79-7913) 1x Power cord (EU) 1x Power cord (UK) 1x Manual

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This component storage box is the perfect solution for more organization on your workbench, especially when working with small electronic components. The box with 128 compartments offers enough space to store components such as resistors, capacitors, diodes and transistors clearly and safely. Each part has its own compartment, which makes it possible to access them quickly when you need them for a project. With the Niimbot label printer you can professionally label various objects. This offer contains: Elektor Electronic Component Storage Box (normal price: €39.95) Niimbot D110 Label Printer (normal price: €29.95) Elektor Electronic Component Storage Box This Electronic Component Storage Box with 128 compartments is an essential tool for anyone handling small electronic components, particularly SMDs. It provides a practical, well-organized solution for storing a wide array of miniature parts like resistors, capacitors, diodes, and transistors. Each component can be stored in its own dedicated space, ensuring that the specific part you need for any project is always easy to locate. Whether you're a professional electronics engineer, a maker or a DIY enthusiast, this storage box offers the perfect blend of functionality and convenience. Its design helps eliminate clutter, optimize component management and keep your work environment tidy so you can focus on what really matters: building and troubleshooting electronic circuits. Dimensions of each compartment (L x W x H): 22 x 15 x 16 mm Dimensions of the box (L x W x H): 280 x 215 x 45 mm Included 1x Component Storage Box (incl. 128 compartments with lids and foam) 3x Spare lids 2x Sheets of blank labels 2x Box labels Niimbot D110 Label Printer Based on direct thermal technology, the Niimbot D110 label printer offers a printing experience without ink, toner or ribbons, making it a cost-effective solution compared to traditional printers. Its compact size and light weight make it easy to transport and fits easily into any pocket. With Bluetooth connectivity and a built-in 1500 mAh battery, this wireless mini printer allows you to print from up to 10 meters away, giving you flexibility on the go, whether you're printing from your smartphone or tablet. The "Niimbot" app (available for iOS and Android) offers a variety of free templates for customizing labels. Specifications Model D110_M (Upgraded Version 2024) Material ABS Resolution 203 DPI Printing speed 30-60 mm/s Print width 12-15 mm Printing technology Thermal Operating temperature 5°C ~ 45°C (41°F ~ 113°F) Battery capacity 1500 mAh Charging interface USB-C Charging time 2 hours Connection Bluetooth 4.0 Wireless distance 10 m Dimensions 98 x 76 x 30 mm Weight 149 g Included 1x Niimbot D110 Label Printer 1x Label tape (12 x 40 mm) 1x USB cable 1x Manual Downloads iOS App Android App

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This versatile digital microscope covers a wide magnification range (18-720x, 1560-2040x, 2760-4080x, 3600-5100x, 60-240x) with 5 lenses for hobby, industrial and biologic purposes. Lens A (18-720x) can be used to observe whole coins or parts, circuit boards, plants, stones, etc. With lens B (1560-2040x), C (2760-4080x) and M (3600-5100x) you can observe biological slides. Lens L is ideal for soldering and repair work. In addition, the microscope has an endoscope for clear observation of the sides of components and inner tubes, allowing 360° viewing without blind spots. Specifications Magnification Lens A 18-720x Lens B 1560-2040x Lens C 2760-4080x Lens M 3600-5100x Lens L 60-240x Screen size 10 inch (25.7 cm) Video resolution (max.) UHD 2880x2160 (24fps) Video format MP4 Photo format JPG Photo resolution 5600x2400 (with interpolation) Frame rate Max. 120fps HDMI output Yes (only HDMI monitor displays) PC output Yes Power supply USB 5 V DC (not included) Stand material Metal Stand size 20 x 19 x 40 cm Included 1x Andonstar AD269S Digital Microscope 1x Metal stand with 2 LEDs 1x X-Y Moveable stage 1x Lens A 1x Lens set (B, C, M) 1x Lens L 1x Endoscope (+ accessories) 1x USB cable 1x HDMI cable 1x Remote control 1x Dimmer cable 3x Backdrop board 5x Biological slides 1x 32 GB microSD card 1x Observation box 1x Tweezers 1x Manual

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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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This Electronic Component Storage Box with 128 compartments is an essential tool for anyone handling small electronic components, particularly SMDs. It provides a practical, well-organized solution for storing a wide array of miniature parts like resistors, capacitors, diodes, and transistors. Each component can be stored in its own dedicated space, ensuring that the specific part you need for any project is always easy to locate. Whether you're a professional electronics engineer, a maker or a DIY enthusiast, this storage box offers the perfect blend of functionality and convenience. Its design helps eliminate clutter, optimize component management and keep your work environment tidy so you can focus on what really matters: building and troubleshooting electronic circuits. Dimensions of each compartment (L x W x H): 22 x 15 x 16 mm Dimensions of the box (L x W x H): 280 x 215 x 45 mm Included 1x Component Storage Box (incl. 128 compartments with lids and foam) 3x Spare lids 2x Sheets of blank labels 2x Box labels

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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 digital night vision monocular is a powerful device that combines advanced technology with user-friendly comfort. Featuring high-resolution photo and video capabilities, adjustable infrared brightness, and a compact design, it is perfectly suited for a variety of outdoor activities such as camping, fishing, and wildlife observation. Specifications Optical Magnification 6x Digital Zoom 8x IR Illumination Power/Wavelength 3 W/850 nm Lens Diameter 25 mm Photo Resolution 40 MP, 30 MP, 25 MP, 20 MP, 10 MP, 8 MP, 5 MP, 3 MP Photo Format JPG Video Resolution 2.5k, 1080p, 720p Video Format AVI FOV 10° Image Sensor CMOS Recording during the Day Color Recording at Night Black and White Display 2-inch IPS screen (320x240) Battery Built-in 18650 Lithium battery (2500 mAh) Charging Port USB-C Operating Temperature −30°C to +55°C (−22°F to +122°F) Dimensions 170 x 75 x 65 mm Weight 245 g Included 1x Night Vision Monocular 1x Card Reader 1x Storage Bag 1x Wrist Strap 1x Lens Cleaning Cloth 1x USB Cable 1x Manual

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This versatile microscope with upgraded Plus stand covers a wide magnification range (60-240x, 18-720x, 1560-2040x) with 3 lenses. With this digital microscope, you can examine plants, insects, gems and coins, or do electronic work such as repairing or making circuit boards. Features Upgraded Plus stand, the spliced base plate, which is easy to disassemble and assemble Turn into a large base, from 18 x 20 cm to 40 x 30 cm Add a tool holder and bottom storage to keep your desktop tidy A pair of soldering helping hands to help secure the PCB or other objects An anti-static and high-temperature resistant silicone pad/soldering mat to help you complete your work better The Pro Metal Stands features a strong metal stand adjustable in various directions and angle 3-Lens Digital Microscope allowing you to observe objects ranging from soldering and repairing to coins, and even for biological slides. Lens A (18-720x) Lens D (1800-2040x) Lens L (60-240x) Observation distance: Lens A (12-320 mm) Lens L (90-300 mm) Lens D (4-5 mm) Specifications AD246SM-Plus AD249SM-Plus Magnification Lens A 18-720 18-720 Focus range 12-320 mm 12-320 mm Lens D 1800-2040 1800-2040 Focus range 4-5 mm 4-5 mm Lens L 60-240 60-240 Focus range 90-300 mm 90-300 mm Screen size 7 inch (17.8 cm) 10 inch (25.7 cm) Video resolution (max.) UHD 2880x2160 (24fps) UHD 2880x2160 (24fps) Video format MP4 MP4 Photo format JPG JPG Photo resolution 5600x2400 (with interpolation) 5600x2400 (with interpolation) Frame rate Max. 120fps Max. 120fps HDMI output Yes (support dual-screen display) Yes (only HDMI monitor displays) PC output Yes Yes Stand size 30 x 40 x 33 cm 30 x 40 x 33 cm Included 1x Andonstar AD246SM-Plus Digital Microscope 3x Lenses (A, D & L) 1x Metal stand with 2 LEDs 1x Soldering mat 1x Beam 1x Column 1x Tool holder 1x Soldering Helping Hands 1x Slide holder 1x 32 GB microSD card 1x USB cable 1x Switch cable 1x HDMI cable 1x Remote control 5x Prepared Slides 1x Observation box 1x Tweezers 1x Manual Downloads Manual Software

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This is a high-performance cooling solution designed to effectively dissipate heat and ensure optimal operating temperatures for the Raspberry Pi. It is an essential accessory for users who want to enhance the performance and longevity of their Raspberry Pi device. The compact design of the Water cooling kit for Raspberry Pi 5 allows it to be seamlessly installed on the top and bottom of the Raspberry Pi 5, ensuring efficient heat transfer and perfectly protecting the bottom of the Raspberry Pi. Its simple installation process eliminates the need for complex wiring or additional tools, making it friendly to both beginners and experienced Raspberry Pi enthusiasts. With its powerful cooling performance, the water cooling kit for Raspberry Pi 5 for effectively dissipates heat generated by the Raspberry Pi during intensive tasks or prolonged usage. This helps prevent overheating and ensures stable performance. Efficient water-cooled cooling will allow you to connect multiple Raspberry Pi boards to a set of cooling devices. When using Raspberry Pi in a cluster, you can use a set of water-cooled devices to effectively cool multiple Raspberry Pi boards. Features Made for Raspberry Pi: Specially designed for Raspberry Pi 5, 1:1 mold opening, covering all heat sources, including CPU, Wi-Fi, power chip, and eMMC. Cooling Performance: Effectively dissipates the heat generated by the Raspberry Pi, ensuring optimal operating temperatures and preventing overheating. Easy to Use: The integrated design of the water pump and cooling fan is convenient for users to install. RGB Color Lighting: RGB-colored lights are installed at the fan and water pump locations. Included 1x Water cooling kit 1x Water cooling radiator 1x Black heatsink 2x Silicone hose 1x 12 V/2 A power adapter (US) 4x Hexagonal screw M2.5x10 1x L-key hex wrench

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The FNIRSI SG-003A multi-functional Signal Generator a.k.a. Process Meter/Calibrator is a high-precision voltage/current generator and meter. The SG-003A provides highly accurate reference voltages or currents for testing and calibrating other measurement instruments like multimeters and oscilloscopes. Besides voltages and currents, the SG-003A also generates rectangular pulse signals with precisely programmable frequencies and duty cycles. Its converter mode turns the SG-003A into a precision voltage-controlled current source, or current-controlled voltage source, and even a voltage- or current-controlled frequency generator. The SG-003A is a great tool for checking your multimeter’s accuracy and precision, and for testing e.g. LEDs. Features Accuracy (voltage/current) 0.1% ±0.005 Resolution (current) 0.01 mA Frequency 0-10 kHz Resolution 5 digits Output power 24 V Display 2.4" TFT LCD (320 x 240) Dimensions 92 x 72 x 30 mm Weight 165 g Specifications Signal Range Precision Resolution Max load External power supply Active current output 0~24 mA ±(0.1% + 0.005) 0.01 mA 750 Ω Passive current output (XMT) 0~24 mA ±(0.1% + 0.005) 0.01 mA 0~30 V Voltage output 0~24 V ±(0.1% + 0.005) 0.01 V 24 V loop 0~24 mA ±(0.1% + 0.005) 0.01 mA Frequency output 0~9999 Hz ±2% 5 digits Current input 0~24 mA ±(0.1% + 0.005) 0.01 mA Voltage input 0~30 V ±(0.1% + 0.005) 0.01 V Included 1x FNIRSI SG-003A Signal generator 4x Test clips 1x USB charger 1x USB-C cable 1x Manual Downloads Manual Firmware V4.3

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This ESP32 terminal is a microcontroller based on the ESP32 master. It adopts Xtensa 32-bit LX7 dual-core processor with a main frequency of up to 240 Mhz, supports 2.4 GHz Wi-Fi and Bluetooth 5 (LE), and can easily handle common edge terminal device application scenarios, such as industrial control, agricultural production environment detection and processing, intelligent logistics monitoring, smart home scenarios and more. The ESP32 module also has a 3.5-inch parallel RGB interface capacitive touch screen with a resolution of 320x480 to ensure perfect image output at a frame rate 60 FPS. The 4 Crowtail interfaces on the back of this terminal can be used with Crowtail series sensors, plug and play, and create more interesting projects quickly and conveniently. In addition, it is also equipped with an SD card slot for extended storage (SPI leads) and a buzzer function. The ESP32 touchscreen supports ESP-IDF and Arduino IDE development and is compatible with Python/MicroPython/Arduino. It also supports LVGL, which is the most popular free and open-source embedded graphics library to create beautiful UIs for any MCU, MPU, and display type. Now it has also obtained the official certification of LVGL. LVGL's board certificate shows that the boards can be easily used with LVGL and has decent performance for UI applications. The onboard charging circuit and lithium battery interface can use the type-C power supply interface to supply power and charge the battery at the same time, providing more outdoor scene expansion possibilities. Features Integrated ESP32-S3 module, which is support 2.4 GHz Wi-Fi and Bluetooth 5 (LE) LCD 3.5 inches parallel TFT-LCD with 320x480 resolution Compatible with Arduino/Python/MicrmoPython Mature software support, support ESP-IDF and Arduino IDE development Support open-source Graphics Library-LVGL Support 1T1R mode, data rate up to 150 Mbps, Wireless Multimedia (WMM) Perfect security mechanism, support AES-128/256, Hash, RSA, HMAC, digital signatures and secure boot Onboard charging chip and interface, use type-C interface to charge With 4 Crowtail interfaces (HY2.0-4P connector), plug and play with various Crowtail sensor Applications Smart Home Industrial Control Medical Monitor Home Appliance Display Logistics Monitoring Specifications ESP32-S3 module with 16 MB Flash and 8 MB PSRAM Wi-Fi Protocol: 802.11b/g/n (802.11n up to 150 Mbps) Wi-Fi Frequency Range: 2.402-2.483 Ghz Support Bluetooth 5 With 4 Crowtail interfaces (HY2.0-4P connector) and onboard Micro TF card slot 3.5-inch TFT LCD RGB true color LCD screen with 320x480 resolution Driver chip: ILI9488 (16-bit parallel line) Capacitive touch panel controller IC FT6236 series Operating Voltage: DC 5 V-500 mA Sleep current: USB power supply: 6.86 mA Lithium battery power supply: 3.23 mA LiPo Battery Interface: PH2.0 Operating temperature: -10°C ~ 65°C Active Area: 73.63 x 49.79 mm (L x W) Dimensions: 106 x 66 x 13 mm (L x W x H) Included 1x 3.5-inch ESP RGB Display with Acrylic Shell 1x USB-C Cable Downloads Wiki Schematic Diagram 16 learning Lessons for LVGL Source code Lesson code LVGL Reference ESP32-S3 Datasheet ILI9488 Datasheet Capacitive Touch Display Data

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Whistle And It Chirps Back At You! Although birds of all sorts are lovingly owned and watched by many people, sadly most of them have not yet learnt to communicate with us. This all-electronic bird takes a step in the right direction: when you whistle at it, it chirps back! Features Responds to Whistling Adjustable Bird Sounds (Tone and Length) Elektor Heritage Circuit Symbols Tried & Tested by Elektor Labs Educational & Geeky Project Through-Hole Parts Only Included Printed Circuit Board All Components Wooden Stand Bill of Materials Resistors R1,R2 = 2.2kΩ R3,R4,R13 = 47kΩ R5 = 4.7kΩ R6 = 3.3kΩ R7,R10,R11,R12,R17 = 100kΩ R8,R19,R23 = 1kΩ R9 = 1MΩ R14,R15 = 10kΩ R16,R18 = 470kΩ R20 = 68kΩ R21 = 10MΩ R22 = 2.7kΩ R24 = 22Ω P1,P2 = 1MΩ P3,P5 = 470kΩ P4 = 100kΩ Capacitors C1,C2,C12 = 100nF C3,C4 = 10nF C5 = 22μF, 16V C6,C7,C11 = 10μF, 16V C8 = 2.2μF, 100V C9 = 1μF, 50V C10 = 2.2nF C13 = 10nF Semiconductors D1,D3,D4,D5,D6,D7,D8 = 1N4148 D2 = 3V3 zener diode T1,T2 = BC557B T3 = BC547B T4 = BC327-40 IC1 = TL084CN IC2 = 4093 Miscellaneous BT1 = wired battery clip for 6LR61/PP3 LS1 = miniature loudspeaker, 8Ω, 0.5W S1 = switch, slide, SPDT MIC1 = electret microphone PCB 230153-1 v1.1

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DSO-TC3 combines a digital oscilloscope, electronic component tester, signal generator, continuity test, voltage test, temperature and humidity measurement, infrared decoding and other functions are skillfully integrated. It is equipped with a 2.4" color TFT display and a built-in rechargeable lithium battery for mobile use. Specifications (Oscilloscope) The oscilloscope has a real-time sampling rate of 10 MSa/s and a bandwidth of 500 kHz. With complete trigger function (single, normal, automatic), no matter if you’re using periodic analog signals or non-periodic digital signals. Maximum measured voltage signal is 400 V. Equipped with efficient AUTO, the measured waveform can be displayed without cumbersome adjustments. Real-time sample rate 10 MSa/s Bandwidth 500 khz Input resistance 1 MΩ Coupling method AC/DC Test voltage range 400 V Vertical Sensitivity (x1) 10 mV-10 V Horizontal time base range 1us-10s Trigger mode Auto/Normal/Single Trigger type Rising edge/Falling edge Waveform Freeze Yes Automatic measurement Yes Specifications (Component Tester) The instrument can automatically identify and measure various transistors, including NPN and PNP triodes, N-channel and P-channel mosfet, junction mosfet, diodes, dual diodes, thyristors, and resistors, inductors, capacitors and other passive components. Automatic detection of pin definition. Automatically analyze NEC protocol infrared code. Other functional modes: Including circuit continuity test, 0-40 V input voltage measurement, PWM output, 0-32 V regulated diode measurement, DS18B20 temperature sensor measurement, DHT11 temperature and humidity sensor measurement, etc. Specifications (Signal Generator) The signal generator has a total of 6 waveforms to choose from, with adjustable frequency and amplitude. Sine wave 1-100 KHz/0-3.3 V/50% Square wave 1-100 KHz/3.3 V/50% Pulse wave 1-100 KHz/3.3 V/0-100% Triangle wave 1-100 KHz/0-3.3 V/50% Ramp 1-100 KHz/0-3.3 V/0-100% DC 0-3.3 V Included 1x DSO-TC3 1x P6100 Oscilloscope Probe (100 MHz) 3x Test Hooks 1x Adapter 1x USB-C Cable 1x Manual Downloads Manual Firmware V0.3

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Pull Down Lever For Highest Score! This Elektor Circuit Classic from 1984 shows a playful application of CMOS 400x series logic ICs in combination with LEDs, a highly popular combination at the time. The project imitates a spinning-digit type slot machine. The Game To play the game, first agree on the number of rounds. Player 1 actuates the switch lever as long as desired and releases it. The LEDs then show the score which is the sum of the 50-20-10-5 digits lit up. If the Play Again! LED lights, Player 1 has another, “free” round. If not, it’s Player 2’s turn. The players keep tab of their scores, and the highest score wins. Features LEDs Indicate Score Multi-Player and Play Again! Elektor Heritage Circuit Symbols Tried & Tested by Elektor Labs Educational & Geeky Project Through-Hole Parts Only Included Printed Circuit Board All Components Wooden Stand Bill of Materials Resistors (5%, 250 mW) R1,R2,R3,R4 = 100kΩ R5,R6,R7,R8,R9,R10 = 1kΩ Capacitors C1 = 4.7nF, 10%, 50V, 5mm C2 = 4.7μF, 10%, 63V, axial C3,C4 = 100nF, 10 %, 50V, ceramic X7R, 5mm Semiconductors LED1-LED6 = red, 5mm (T1 3/4) IC1 = 74HC4024 IC2 = 74HC132 Miscellaneous S1 = switch, toggle, 21mm lever, SPDT, momentary S2 = switch, tactile, 24V, 50mA, 6x6mm S3 = switch, slide, SPDT IC1,IC2 = IC socket, DIP14 BT1 = PCB-mount CR2032 battery retainer clip Desktop Stand PCB 230098-1 Not included: BT1 = CR2032 coin cell battery

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Develop Arm Cortex-M7 powered Audio, DSP and Motor Control Projects At the heart of NXP Semiconductors‘ MIMXRT1010 Development Kit is the i.MX RT1010 Crossover MCU sporting an Arm Cortex-M7 core truly capable of running power- and memory hungry DSP applications. The popular MCUXpresso IDE is key to creating software for the development kit, while a powerful SDK is provided to reduce program development time and effort. The dev kit offers great connectivity through its audio CODECs, 4-way headphone jack, external speaker connection, microphone, and Arduino interface. Conveniently, several on-board debug probes are supplied with the kit allowing you to debug your programs by talking directly to the MCU. Helped by the debugger, you can single-step through a program, insert breakpoints, view and modify variables, and so on. Using the MCUXpresso IDE and the SDK, many working and tested projects are developed in the book based on parts, modules, and technologies, including: LED and LCDs ADC I²C projects SPI projects UART projects Motor Control Audio and Digital Audio Processing (DSP) This bundle contains: Elektor Book: Get Started with the NXP i.MX RT1010 Development Kit (normal price: €34.95) NXP i.MX RT1010 Kit Development Kit (normal price: €49.95)

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The JOY-iT DMSO2D72 is your ideal companion for the workshop and outdoor use. It combines a 2-channel oscilloscope, a signal generator for any wave type as well as a multimeter with 6 different measurement types in one device and serves all functions you expect from individual devices. JOY-iT has placed particular emphasis on simple, clear and practical handling in order to make work as pleasant as possible for the user. For this the DMSOD72 is equipped with a 'one-button' auto measuring function and a 'one-button' page out. In addition, 2 signals can be compared directly on the 2.8' 65K colour LCD display. The power supply is provided by two 18650 lithium batteries, which are included in the scope of supply and allow a continuous operation of one day as well as a standby time of up to 8 weeks. Furthermore, operation via the USB-C interface is also possible, during which the batteries are charged simultaneously. In order to protect the device perfectly in 'outdoor use', the DMSO2D72 was equipped with a silicone sheath, which offers protection against shocks, dirt and heat. The extensive and very user-friendly software is available in English, German and French and can be switched easily on the device. You will also be impressed by the PC software, which provides you with a multitude of functions with very high ease of use. General Specifications Display type 2.8' 64K color TFT-LCD Display resolution 320 x 240 Display settings Adjustable background brightness, backlight duration, auto power off time Protective case Silicon cover, good impact resistance, outstanding heat resistance, easy to disassemble Special features Mobile use through battery operation, 3-in-1 device (oscilloscope, signal generator, multimeter), 3 languages (German, English, French) Assembly / Stand function 45° suspension bracket Interface USB Type C for power/data Rechargeable battery 2x 16850 Lithium Charging current 5 V / 2 A Battery life In use: A full dayIn standby: Up to 8 weeks PC software Windows 7 and higher Operating temperature 0-50°C Dimensions 199 x 98 x 40 mm Weight 624 g Oscilloscope Channels 2 + DMM + AWG Bandwidth 70 MHz Sampling Rate 250 MSa/s Single channel125 MSa/s Dual channel Vertical resolution 10 mV - 10 V Automatic measurement of Frequency and amplitude Manual cursor measurement Voltage and time Output impedance (DC) 25 pF ±3 pF; 1 MΩ ±2% Maximum input voltage 150 V RMS Signal Generator Sampling rate 250 MSa/s Vertical resolution 12 bits Waveforms Sine, square, triangle, trapezoid, and many more Sine 1 Hz - 25 MHz Square 1 Hz - 10 MHz Triangle 1 Hz - 1 MHz Trapezoid 1 Hz - 5 MHz Frequency resolution 1 Hz Output impedance 50 Ω Digital Multimeter 6 Multimeter measuring modes Voltage, current, resistance, capacity, diode, on-off Max. resolution 4000 Counts Ranges Voltage 0 µV - 600 V DC0 mV - 600 V AC, 40-400 Hz Current 0 µA - 10 A Resistance 0 mΩ - 40 MΩ Capacity 0 pF - 100 µF Diode 0-2 V On-off <50 Ω Included JOY-iT 3-in-1 Handheld DMSO2D72 2 rechargeable batteries (18650, 2600 mAh) Passive 80 MHz Probe + accessories 2x BNC to crocodile clip coaxial cable 2x DMM test lead USB to USB-C cable USB power supply (5 V, 2 A) Downloads Datasheet Manual PC Software 1.1.10 Flash Manual (28-07-2021) Flash Software Latest firmware version (13-01-2022)

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This versatile microscope covers a wide magnification range (60-240x, 18-720x, 1560-2040x) with 3 lenses. With this digital microscope, you can examine plants, insects, gems and coins, or do electronic work such as repairing or making circuit boards. Specifications AD246S-M AD249S-M Magnification Lens A 18-720 18-720 Focus range 12-320 mm 12-320 mm Lens D 1800-2040 1800-2040 Focus range 4-5 mm 4-5 mm Lens L 60-240 60-240 Focus range 90-300 mm 90-300 mm Screen size 7 inch (17.8 cm) 10 inch (25.7 cm) Video resolution (max.) UHD 2880x2160 (24fps) UHD 2880x2160 (24fps) Video format MP4 MP4 Photo format JPG JPG Photo resolution 5600x2400 (with interpolation) 5600x2400 (with interpolation) Frame rate Max. 120fps Max. 120fps HDMI output Yes (support dual-screen display) Yes (only HDMI monitor displays) PC output Yes Yes Stand size 20 x 18 x 30 cm 20 x 18 x 30 cm Included 1x Andonstar AD249S-M Digital Microscope 3x Lenses (A, D & L) 1x Slide holder 1x 32 GB microSD card 1x USB cable 1x Switch cable 1x HDMI cable 1x Remote control 5x Prepared Slides 1x Observation box 1x Tweezers 1x Manual Downloads Manual Software

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This 2-in-1 hot air soldering station offers a cost-effective solution for soldering and desoldering all types of SMD components. Features Incl. soldering iron and hot air pump. It is suitable for soldering and desoldering all types of surface mounted IC, PCB or components. The control unit has 2 LEDs that display the temperature and in °C and °F. The temperature can be easily adjusted with simple up/down buttoms. The hot air temperature can be calibrated from 3L/min to 24L/min continuously. Temperature is micro-processor controlled and can be adjusted. Temperature range: 50-480°C for soldering iron, 100-500°C for hot air pump. Specifications Power Soldering iron: 24 V, 60 WHot air pump: 300 W Power supply 220-240 V AC/50 Hz Temperature range Soldering iron: 50-480°CHot air pump: 100-500°C Dimensions 113 x 125 x 175 mm Weight 2 kg Included 1x ZD-8922 Rework station 1x Soldering iron 1x Hot air gun 3x Hot air nozzles 1x Soldering iron with needle bit 1x Power cord 1x Soldering iron stand with sponge

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The Andonstar AD409 Pro-ES is a digital microscope with an extra-high stand that is also equipped with an endoscope. The microscope allows clear observation of the sides of components, the inside of pipes, etc., enabling 360° observation without dead angles. The microscope also has a remote control that allows you to easily switch between the following image modes: two-lens, microscope and endoscope. Features High-quality metal lens and focusing barrel Professional HDMI digital microscope supports multiple output methods Soldering Microscope with Pro Metal Stand Unique UV filter design 8 Levels adjustable LED Lights Convenient Wireless Remote Control Professional Measurement Software Specifications Screen size 10.1 inch (25.7 cm) Image sensor 4 MP Video output UHD 2880x2160 (24fps)FHD 1920x1080 (60fps/30fps)HD 1280x720 (120fps) Video format MP4 Magnification Up to 300 times (27 inch HDMI monitor) Photo resolution Max. 12 MP (4032x3024) Photo format JPG Focus range Min. 5 cm Frame Rate Max. 120fps Video interface HDMI Storage microSD card (up to 64 GB) PC support Windows, PC software with measurement Mobile phone, tablet terminal support Support WiFi connection and measurement Power source 5 V DC Light source 2 LEDs with the stand Endoscope Yes Stand size 18 x 20 x 32 cm Included 1x Andonstar AD409 Pro-ES Digital Microscope 1x Endoscope 1x Metal stand with 2 LEDs 1x UV filter (already assembled in the lens) 1x IR remote 1x Switch cable 1x Power adapter 1x Wrench 2x Metal clips 1x HDMI cable 1x User manual Downloads Manual Software Model Comparison AD407 AD407 Pro AD409 AD409 Pro-ES Screen size 7 inch (17.8 cm) 7 inch (17.8 cm) 10.1 inch (25.7 cm) 10.1 inch (25.7 cm) Image sensor 4 MP 4 MP 4 MP 4 MP Video output 2160p 2160p 2160p 2160p Interfaces HDMI HDMI USB, HDMI, WiFi USB, HDMI, WiFi Video format MP4 MP4 MP4 MP4 Magnification Up to 270x Up to 270x Up to 300x Up to 300x Photo resolution Max. 4032x3024 Max. 4032x3024 Max. 4032x3024 Max. 4032x3024 Photo format JPG JPG JPG JPG Focus distance Min. 5 cm Min. 5 cm Min. 5 cm Min. 5 cm Frame rate Max. 120f/s Max. 120f/s Max. 120f/s Max. 120f/s Storage microSD card microSD card microSD card microSD card PC support No No Windows Windows Mobile connection No No WiFi + Measurement WiFi + Measurement Power source 5 V DC 5 V DC 5 V DC 5 V DC Light source 2 LEDs with the stand 2 LEDs with the stand 2 LEDs with the stand 2 LEDs with the stand Endoscope No No No Yes Stand size 20 x 12 x 19 cm 20 x 18 x 32 cm 18 x 20 x 30 cm 18 x 20 x 32 cm Weight 1.6 kg 2.1 kg 2.2 kg 2.5 kg Price €259.00€199.00 €289.00€229.00 €399.00€279.00 €449.00€299.00

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Get started with microcontroller based electronics This Arduino-compatible bundle contains the Motherboard, Digitiser, Sensor Array and RGB Matrix. With these 4 boards you have everything you need to build a clock, score counter, timer, task reminder, thermometer, humidity display, sound meter, light meter, clap trigger, colored bar graph display, animated alarm, and much more! The Motherboard has a built in real time clock module that keeps time even when unplugged. The Digitiser can display 4 digits or characters and includes 2 buttons and a potentiometer to let you control what’s being displayed, or the brightness of the display. The Sensor Array can read temperature, relative humidity, sound and light, with an SD card slot for data recording. The RGB Matrix has 16 RGB LEDs that are controlled through shift registers, so only use 3 or 4 pins of the Motherboard. Motherboard The Motherboard is an Arduino-compatible microcontroller breakout board designed around the ATmega328P. The board comes in a solder-it-yourself kit with all the components you need to get started with microcontroller based electronics. All other boards connect to this. Based on the ATmega328P Arduino compatible On-Board RTC (Real Time Clock) FTDI Header for easy programming Bluetooth Header Terminal Block Connections Digitiser The Digitiser is a versatile display and input board. It let’s you visualise your data. Show your sensor information, clock digits, or even keep score for your favourite card game. The Digitiser also includes some buttons and a knob to let you take control. 4x 7-Segment Displays Uses 595 Shift Registers 2 Switches and a Potentiometer 4 colored 'Mode' LEDs Chainable with other 595 Boards Terminal Block Connections Sensor Array As the name suggests, the Sensor Array is an array of sensors. Measure temperature and relative humidity via the DHT11, light via the light dependant resistor, and sound via the microphone and amplifier circuit. Then you can log the data using the on-board SD card slot. DHT11 Temp & Humidity Sensor Microphone and Amplifier Circuit Light Dependent Resistor MicroSD Slot for Saving Data Logic Level Converter Circuit Terminal Block Connections RGB Matrix Add color to your project by controlling 16 red, 16 green and 16 blue LEDs with just 3 pins of your microcontroller. The RGB Matrix uses shift registers, a matrix and switching transistors, so there’s plenty to learn and explore. 4x4 (16) RGB LEDs Uses 595 Shift Registers Chainable with other 595 Boards Transistor Switches Terminal Block Connections Downloads (Manuals) Motherboard Digitiser Sensor Array RGB Matrix

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More than 200 power supply designs for home construction This USB Stick contains over 200 different power supply circuits from the volumes 2001-2022 of Elektor. The article search feature allows you to search full-text content. The results are always displayed as pre-formatted PDF documents. Highlights Cuk Converter Automatic Battery Switchover Battery Voltage LED Digital Benchtop Power Supply Lithium-Ion Charger Solar Cell Charger Electronic Fuse High Voltage Regulator Power Supply for USB Devices Step-up Converter for LEDs Battery Management and much more... On the Stick you will also find a folder with additional material such as PCB layouts, Gerber files and software.

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The M12 Mount Lens (12 MP, 8 mm) is ideal for use with the Raspberry Pi HQ Camera Module, offering sharp and detailed imaging for a wide range of applications.

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