The FNIRSI FNAC-28 is a versatile USB tester that functions as a voltage/current meter and quick charge trigger. Supporting up to 6.5 A bidirectional current detection via USB-A and USB-C, it features a high-precision 16-bit ADC for accurate measurements.
With multi-functional data analysis, fast charge protocol support (QC, VOOC, WARP, etc.), and cable resistance detection, it’s ideal for detailed power and charging diagnostics.
Features
Bidirectional High Current Detection: Supports up to 6.5 A bidirectional current detection. Compatible with USB-A and USB-C interfaces, it accurately measures both power supply and power consumption, providing users with detailed data support.
High-Precision Measurement Chip: Equipped with an external 16-bit ADC, the USB power meter ensures precise voltage and current measurements, effectively minimizing error and enhancing test accuracy.
Multifunctional Data Analysis: Supports battery capacity testing and stores up to 5 data sets. It also features curve display, waveform pause, and an adjustable time base for detailed data observation.
Fast Charging Protocol Support: Supports QC2.0/QC3.0, FCP/SCP, AFC, VOOC/WARP, and SVOOC 1.0/2.0 triggering. All supported protocols are automatically detected to meet a wide range of testing needs.
Cable Detection and Simulation: Using the differential pressure method, the USB detector measures cable internal resistance, simulates APPLE 2.4 A and DASH fast charging, and reads DASH cable information.
Specifications
Resolution
Accuracy
Display
1.06" full-color TFT LCD screen
Monitored Voltage
4~24 V
0.001 V
±(0.2‰+2)
Monitored Current
0~6.5 A
0.001 A
±(0.2‰+2)
Monitored Power
0~156 W
0.001 W
±(0.2‰+2)
Protocol Detection
QC2.0: 5 V/9 V/12 V/20 V
QC3.0: 3.4-20 V
FCP: 9 V/12 V/20 V
SCP: 5.5-6.0 V
AFC: 9 V/12 V
VOOC/WARP: 20 V
SVOOC 1.0: Yes
SVOOC 2.0: Yes
Temperature display
°C/°F switch
Languages
English and Chinese
Cable Resistance
Yes
Detect DASH Cable
Yes
Soft DASH Cable
Yes
Soft APPLE 2.4A
Yes
Brightness Adjustment
Yes
Standby Time Setting
Yes
Firmware Upgrade
Yes
Dimensions
73 x 36 x 12 mm
Weight
21 g
Included
1x FNIRSI FNAC-28 USB Tester
1x USB cable
1x Manual
Downloads
Manual
FNIRSI USB Meter for PC (Windows/Linux)
FNIRSI Bluetooth App (Android)
Manual_USB Meter PC Software
Manual_Android Bluetooth App
The Smart USB Soldering Iron Kit is a compact, cordless solution designed for precision and portability. Featuring intelligent three-speed temperature control (300-450°C) with an easy-to-read LED display, it heats up in just 10 seconds and melts solder in as little as 6 seconds.
The 1000 mAh rechargeable battery delivers up to 30 minutes of continuous use, making it ideal for quick repairs, electronics projects, and DIY tasks. With a plug-and-play, replaceable tip and a high-temperature-resistant insulated shell, it’s safe, user-friendly, and perfect for both beginners and professionals on the go.
Features
Three-Speed Intelligent Temperature Adjustment: Features an LED display screen with adjustable temperatures between 300-450°C (572-842°F). Easily switch between Celsius and Fahrenheit.
Integrated Plug-In Soldering Iron Tip: Plug-and-play design. The tip can be replaced by simply unscrewing it, ensuring quick and convenient operation.
Safe and Durable Design: High-temperature-resistant, insulated shell for enhanced safety during use.
Battery Capacity: Equipped with a rechargeable 1000 mAh battery that supports up to 30 minutes of continuous operation on a full charge – ideal for everyday tasks.
Efficient Performance: 8 W power with an integrated heating core for rapid heat-up. Melts tin in just 6 seconds, providing excellent thermal conductivity.
Easy to Use: After powering on via USB, set your desired temperature. The soldering iron heats up in 10 seconds. Once finished, place the tip on the stand—it cools down within 1 minute. Perfect for beginners, hobbyists, basic home repairs, and training engineers.
Cordless Innovation: This cordless soldering kit includes a built-in rechargeable lithium-ion battery, eliminating the need for cables. Versatile use for circuit board soldering, electrical repairs, jewelry making, metal crafts, computer maintenance, and DIY projects.
Specifications
Adjustable Temperature: 300-450°C (572-842°F)
Tin Melting Time: <15 seconds
Working Voltage: 5 V
Power Output: 8 W
Battery Capacity: 1000 mAh
Auto Sleep Function: Activates after 10 minutes of inactivity
Charging Time: Approx. 90 minutes
Battery Life: Up to 30 minutes continuous use
Charging Interface: USB-C
Main Material: Aluminum alloy
Dimensions: 190 x 16 mm (7.4 x 0.6")
Included
1x USB Soldering Iron
1x Soldering Tip
1x Soldering Rosin
1x Soldering Iron Holder (with Sponge)
1x USB-C Charging Cable
1x Solder Wire
1x Storage Box
The SEQURE T55 Smart Mini Temperature Adjustable Soldering Hot Plate is a compact and efficient tool designed for precise preheating and desoldering tasks. With its adjustable temperature range from 50°C to 280°C (122°F to 536°F), it is suitable for various applications, e.g. cell phone repair, PCB assembly, etc.
Features
Adjustable heating temperature range: 50°C to 280°C (122°F to 536°F)
Equipped with a heat-resistant ceramic temperature sensor, ensuring high-accuracy data measurement under continuous high temperatures.
Automatically stops heating after reaching the preset working time.
Supports PD, QC, and DC (max 25 V).
Intelligent temperature control algorithm for temperature compensation and power adjustment.
128 x 32 resolution OLED display with a built-in buzzer to indicate operating status.
°C/°F conversion
Specifications
Heating Area
55 x 55 mm
Working Temperature
50-280°C (122-536°F)
Max Voltage
25 V
Max Power
95 W
Recommend Voltage
19-25 V
PD Power Supply
PD 20 V ≥3A
Power Supply Modes
PD, QC, DC
Interface
USB-C
Display
128 x 32 OLED
Menu Languages
English, Russian, and Chinese
Dimensions
55 x 60 x 37 mm
Weight
92 g
Included
1x SEQURE T55 Smart Mini Soldering Hot Plate
1x PD 65 W Power Supply (EU)
1x Fast Charging Cable (100 W/5 A)
Bring your projects to life with this multifunctional precision drill, engineered for a wide range of applications including cutting, drilling, engraving, polishing, and more. Powered by a robust 135 W motor, it offers variable speed control with an impressive range of 10,000 to 32,000 rpm – ensuring precise and consistent performance across various materials and tasks.
The drill comes in a convenient carry case with a comprehensive 162-piece accessory set, providing the right tool for every job and enabling seamless transitions between different applications. Whether you're a hobbyist or a professional, this versatile tool delivers the power, control, and reliability you need for high-quality craftsmanship.
Multifunctional Versatility
This all-in-one precision drill comes with 162 accessories, making it perfect for a wide range of applications – from cutting and drilling to engraving and polishing. Effortlessly switch between projects and stay prepared for any task.
Powerful Performance
Featuring a 135 W motor and a variable speed range from 10,000 to 32,000 rpm, this drill delivers consistent, high-performance output. It ensures accuracy and efficiency, even for the most demanding jobs.
Comprehensive Accessory Set
Whether you're a dedicated hobbyist or a professional, the included accessories provide everything you need to get the job done right. Enjoy maximum flexibility and convenience in one complete package.
Ergonomic, User-Friendly Design
Designed for comfort and ease of use, the drill features intuitive controls and an ergonomic grip. It fits comfortably in your hand, allowing for precise work—even during extended use.
Built to Last
Crafted from high-quality materials, this precision drill is built for durability and long-term reliability. Whether you're just starting out or are an experienced maker, this tool is made to deliver outstanding results again and again. Let me know if you'd like a more technical, casual, or sales-focused version too!
Included
1x Electric drill (10000-32000 rpm with on/off switch)
1x Flexible shaft (ideal attachment for precise, detailed work or hard to reach places)
1x Collet nut
4x Collets
10x Diamond wheel points
5x Fiberglass cutting disc
62x Cut-off wheels
1x Rubber polishing disc
2x Sanding drums
22x Sanding bands
1x Sanding flap wheel
12x Polishing stones
9x Wire brushes
7x Polishing felts
1x Silicon carbide grindstone
10x Grinding discs
4x Mandrels
2x Polishing compound
6x Drills (2x 1.5 mm, 2x 2.3 mm, 2x 3.1 mm)
1x Tool
Downloads
Manual
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
The Elektor Milliohmmeter Adapter uses the precision of a multimeter to measure very low resistance values. It is an adapter that converts a resistance into a voltage that can be measured with a standard multimeter.
The Elektor Milliohmmeter Adapter can measure resistances below 1 mΩ using a 4-wire (Kelvin) method. It is useful for locating short circuits on printed circuit boards (PCB).
The adapter features three measurement ranges – 1 mΩ, 10 mΩ, and 100 mΩ – selectable via a slide switch. It also includes onboard calibration resistors. The Elektor Milliohmmeter Adapter is powered by three 1.5 V AA batteries (not included).
Specifications
Measurement ranges
1 mΩ, 10 mΩ, 100 mΩ, 0.1%
Power supply
3x 1.5 V AA batteries (not included)
Dimensions
103 x 66 x 18 mm (compatible with Hammond 1593N-type enclosure, not included)
Special feature
On-board calibration resistors
Downloads
Documentation
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)
The Soldered CONNECT Programmer is designed to make programming boards based on ESP8266 and ESP32 microcontrollers extremely simple. It contains all the necessary electronics and logic, allowing programming to be done by simply plugging a USB cable into the CONNECT Programmer and connecting it to the programming header. The onboard circuitry handles timing and signal sequencing automatically, placing the ESP microcontroller into bootloader mode without the need for manual intervention.
Features
IC: CH340
Pin layout: GPIO0, RESET, RX, TX, 3V3, GND
LEDs: RX, TX, power
Interface: USB-C
Dimensions: 38 x 22 mm
Downloads
Datasheet
GitHub
17 Sensor Modules & 21 Tutorials
The Elecrow All-in-One Starter Kit for Raspberry Pi Pico 2 is an ideal choice for beginners embarking on their learning journey with the RP2040-based Pico 2. This comprehensive kit integrates 17 different sensors onto a single board and features a 2.4-inch full-color TFT touch screen. No soldering or wiring is required – it's ready to use right out of the box, enabling a quick and seamless start.
The kit includes more than 20 creative tutorials, ranging from basic to advanced levels. These step-by-step guides help users gradually become familiar with various sensors, develop logical thinking skills, and spark creativity. Its compact, portable suitcase design makes it easy to carry and perfect for learning on the go.
To enhance the learning experience, the kit also features 20 programmable full-color ambient lights and built-in mini-games, allowing for an engaging blend of education and entertainment.
Features
Powered by Raspberry Pi Pico 2 (RP2350 chip)
Includes 17 integrated sensors with various functions, along with over 20 creative tutorials
All-in-one sensor board design – no soldering required, ready to use out of the box, perfect for quick prototyping
Compact and stylish portable suitcase – small, elegant, and easy to carry
2.4-inch full-color TFT touchscreen
20 programmable full-color ambient lights for dynamic visual effects
Built-in mini-games – play instantly after boot-up, enabling a smooth transition between learning and fun
Sensores
1x Temperature & Humidity Sensor
4x Buttons
1x Ultrasonic Ranging Sensor
1x Light Sensor
1x Linear Potentiometer
3x LEDs
1x Buzzer
1x 2.4-inch TFT Display
1x Infrared Remote
1x Relay
1x Servo motor
1x Sound Sensor
1x Accelerometer & Gyro
1x Touch Sensor
1x Vibration Motor
1x Hall Sensor
1x Gas Sensor (MQ2)
Specifications
All-in-one Starter Kit for Raspberry Pi Pico 2
All-in-one Starter Kit for Arduino
Main Processor
Raspberry Pi Pico 2 RP2350
ATmega328P
Number of Sensors
17 sensors
15 sensors (including 1 Humidity sensor)
Sensor Board Design
Integrated sensor board, no soldering or complex wiring required
Display
2.4-inch TFT full-color touch screen
N/A
Ambient Lights
20 full-color ambient lights, switchable via touch screen
N/A
Built-in Mini Games
Yes
No
Expansion Interfaces
N/A
6 Crowtail interfaces(3x I/O, 2x I²C, 1x UART)
Programming Environment
Based on Arduino software
Number of Tutorials
21 creative tutorials
Interface
USB-C
Dimensions
195 x 170 x 46 mm
Weight
380 g
340 g
Included
1x Elecrow All-in-One Starter Kit for Raspberry Pi Pico 2
1x IR Remote control
1x USB-C cable
Downloads
Datasheet
Manual
Wiki
The TOPDON TC004 SE is a reliable thermal camera designed for locating and tackling industrial, electrical, building, HVAC, and automotive problems with confidence. With an impressive battery life of up to 21 hours (at low brightness), it ensures all-day use. Its video recording capability allows you to monitor maintenance history and reassure customers that systems are functioning safely.
The TC004 SE enhances your diagnostic capabilities, excelling in pinpointing and resolving issues across multiple industries, including industrial, electrical, building, HVAC, and automotive.
Features
21-hour runtime for reliable all-day use (at low brightness)
Supports video recording for later review
Store up to 160,000 images with built-in 32 GB storage
Professional PC software for expanded display and thermal data analysis
Switch between 1x, 2x, and 4x digital zoom to capture every detail
Detailed & smooth images with 256 x 192 IR resolution and 25 Hz refresh rate
Mount on a tripod for steady monitoring
Two built-in LED lights for inspecting hard-to-reach areas
Specifications
TC004
TC004 SE
TC004 Lite
Display
2.8" Color TFT (320 x 240 Pixels)
2.8" Color TFT (320 x 240 Pixels)
2.8" Color TFT (320 x 240 Pixels)
IR light resolution
256 x 192 Pixels
256 x 192 Pixels
160 x 120 Pixels
Spectral range
8~14 μm
8~14 μm
8~14 μm
FOV
52.5° x 39.5°
56° x 42°
40° x 30°
Storage
2 GB RAM + 16 GB TF card
32 GB Built-in
512 MB Built-in
Measuring range
−20~350°C (−4~662°F)
−20~550°C (−4~1022°F)
−20~550°C (−4~1022°F)
Temperature resolution
0.1°C (0.18°F)
0.1°C (0.18°F)
0.1°C (0.18°F)
Measuring modes
Center spot/hot spot/cold spot
Center spot/hot spot/cold spot
Center spot/hot spot/cold spot
Measuring accuracy
±2°C or ±2%
±2°C or ±2%
±2°C or ±2%
Frame rate
25 Hz
25 Hz
25 Hz
Focal length
3.2 mm (0.12")
3.2 mm (0.12")
2.6 mm (0.1")
NETD
<40 mK
<40 mK
<40 mK
Magnification
1x/2x/4x (digital zoom)
1x/2x/4x (digital zoom)
1x/2x/4x (digital zoom)
Tripod screw hole
Yes
Yes
Yes
High/Low temperature alarm
Yes
Yes
Yes
LED flashlight
Yes
Yes
No
Video recording
Yes
Yes
No
Auto shutdown
5 min, 10 min, 20 min, OFF
5 min, 10 min, 20 min, OFF
5 min, 10 min, 20 min, OFF
Battery
Built-in 5000 mAh battery
Built-in 5300 mAh battery
Built-in 2900 mAh battery
Charging time
4 h
4 h
4 h
Standby time
12 h
16 h (High Brightness)21 h (Low Brightness)
15 h
Operating system
Standalone use/Windows devices
Standalone use/Windows devices
Standalone use
PC-based analysis
Supports image analysis with PC
Yes
No
Dimensions
240 x 70 x 90 mm
240 x 70 x 90 mm
240 x 70 x 90 mm
Weight
520 g
520 g
520 g
Included
1x TOPDON TC004 SE Thermal Imaging Camera
1x USB Power Supply
4x Plugs (EU, UK, US, and AU)
1x USB Cable
1x Storage Bag
1x Manual
Downloads
Manual
PC Software (Windows)
The Mixer Geek Theremin+ is a fun and innovative electronic musical instrument inspired by the classic Theremin. Unlike traditional instruments, the Theremin+ is played without physical contact, using hand movements in the air to control pitch and volume.
The Theremin+ offers an exciting and hands-on way to explore music and sound experimentation.
Features
Ready to use out of the box
Equipped with a loudspeaker and full-color screen
Intuitive button-based navigation and confirmation
Choose from over 70 tones
Multiple customizable function settings
Displays waveform, time, frequency, volume, and corresponding piano pitch (display can be turned off)
Powered via USB-C port; compatible with power banks
Compact design with removable telescopic antenna for easy storage
Connects to headphones, external speakers, or recording devices
Dimensions: 98 x 70 x 18 mm
Included
1x Theremin+ Musical Instrument
2x Antennas
1x USB-C cable
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
The PeakTech 1094 two-pole voltage tester is a reliable and practical tool for measuring voltages up to 400 V. It uses LED indicators to display voltage levels at 12 V, 24 V, 50 V, 120 V, 240 V, and 400 V. The device supports both AC and DC voltage measurements and automatically detects and displays polarity when measuring DC voltages – no manual switching between AC and DC is required.
This tester operates without batteries, ensuring it is always ready for use, even after extended periods of inactivity. With its IP54 protection rating, the PeakTech 1094 is robust and resistant to dust and splashing water, making it suitable for use in both indoor and outdoor environments.
Specifications
DC Voltage (max.)
400 V
AC Voltage (max.)
400 V
Over voltage category
CAT III 400 V
Accuracy
-30% to 0% of the measured value
Voltage test
Automatically
Polarity check
Entire measuring range
Range selection
Automatically
Response time
<0.1s
AC Voltage frequency range
50/60 Hz
Dimensions
223 x 40 x 32 mm
Weight
95 g
Downloads
Manual
A Practical Guide to AI, Python, and Hardware Projects
Welcome to your BeagleY-AI journey! This compact, powerful, and affordable single-board computer is perfect for developers and hobbyists. With its dedicated 4 TOPS AI co-processor and a 1.4 GHz Quad-core Cortex-A53 CPU, the BeagleY-AI is equipped to handle both AI applications and real-time I/O tasks. Powered by the Texas Instruments AM67A processor, it offers DSPs, a 3D graphics unit, and video accelerators.
Inside this handbook, you‘ll find over 50 hands-on projects that cover a wide range of topics—from basic circuits with LEDs and sensors to an AI-driven project. Each project is written in Python 3 and includes detailed explanations and full program listings to guide you. Whether you‘re a beginner or more advanced, you can follow these projects as they are or modify them to fit your own creative ideas.
Here’s a glimpse of some exciting projects included in this handbook:
Morse Code Exerciser with LED or BuzzerType a message and watch it come to life as an LED or buzzer translates your text into Morse code.
Ultrasonic Distance MeasurementUse an ultrasonic sensor to measure distances and display the result in real time.
Environmental Data Display & VisualizationCollect temperature, pressure, and humidity readings from the BME280 sensor, and display or plot them on a graphical interface.
SPI – Voltmeter with ADCLearn how to measure voltage using an external ADC and display the results on your BeagleY-AI.
GPS Coordinates DisplayTrack your location with a GPS module and view geographic coordinates on your screen.
BeagleY-AI and Raspberry Pi 4 CommunicationDiscover how to make your BeagleY-AI and Raspberry Pi communicate over a serial link and exchange data.
AI-Driven Object Detection with TensorFlow LiteSet up and run an object detection model using TensorFlow Lite on the BeagleY-AI platform, with complete hardware and software details provided.
15 Sensor Modules & 21 Tutorials
The Elecrow All-in-One Starter Kit for Arduino is the perfect choice for beginners looking to explore the world of Arduino in a fun and accessible way. The kit includes more than 20 interactive tutorials, ranging from easy to advanced. These step-by-step guides help you master sensor usage, develop logical thinking skills, and spark your creativity.
The kit contains 15 sensors in total: 14 built-in sensors and 1 humidity sensor with a Crowtail interface. Each sensor offers unique features and functions, making them ideal for Arduino novices. Additionally, the kit includes 6 Crowtail interfaces, enabling compatibility with over 150 types of Crowtail sensors and offering excellent expandability. These features make it a great entry-level tool for fostering logical thinking and innovation.
Unlike most starter kits, this all-in-one kit uses a unified board design — no breadboard, no soldering, and no wiring required. This allows you to focus entirely on programming and learning Arduino.
Features
15 sensors with different functions, 21 creative tutorials
Common board design for sensors, no need to solder wires, direct use
Portable suitcase (small and exquisite)
Reserved 6 Crowtail interfaces (3x I/O, 2x I²C, 1x UART)
Visualized silk screen printing, corresponding to the characteristics of each sensor
Specifications
All-in-one Starter Kit for Raspberry Pi Pico 2
All-in-one Starter Kit for Arduino
Main Processor
Raspberry Pi Pico 2 RP2350
ATmega328P
Number of Sensors
17 sensors
15 sensors (including 1 Humidity sensor)
Sensor Board Design
Integrated sensor board, no soldering or complex wiring required
Display
2.4-inch TFT full-color touch screen
N/A
Ambient Lights
20 full-color ambient lights, switchable via touch screen
N/A
Built-in Mini Games
Yes
No
Expansion Interfaces
N/A
6 Crowtail interfaces(3x I/O, 2x I²C, 1x UART)
Programming Environment
Based on Arduino software
Number of Tutorials
21 creative tutorials
Interface
USB-C
Dimensions
195 x 170 x 46 mm
Weight
380 g
340 g
Included
1x Elecrow All-in-One Starter Kit for Arduino
1x Moisture Sensor with Cable
1x IR Remote Control
1x USB-C Cable
Downloads
Datasheet
Manual
Wiki
This PCIe 3.0 to dual M.2 HAT enables the Raspberry Pi 5 to access two NVMe SSDs, Hailo-8/8L (M.2 key B+M only), and Google Coral AI accelerators at PCIe 3.0 speeds.
Features
Dual M.2 Slots with PCIe 3.0 Speed: Utilizes the ASMedia ASM2806 PCIe 3.0 switch chip to ensure optimal performance, overcoming the limitations of PCIe 2.0.
Stable Power Supply: Additional pogo pins provide extra power to ensure a stable high-speed connection.
Multiple Size Support: Compatible with M.2 standard sizes 2230, 2242, 2260, and 2280.
Back-mounted Design: Keeps the 40-pin GPIO free for use, allowing compatibility with other Raspberry Pi HATs.
User-friendly Design: The S-shaped FPC cable does not obstruct the microSD card slot.
Open Source Case: Seeed’s M.2 HATs are not compatible with the official Raspberry Pi case, but an adapted 3D-printable case (STP file) is provided.
Applications
Simultaneously supports AI acceleration and high-speed SSD storage
Connects dual NVMe SSDs for large storage capacity
Booting a Raspberry Pi from the SSD
Specifications
M.2 Slots
2
Max. PCIe Speed
PCIe Gen3.0
PCIe Switch Chip
ASM2806
M.2 Size Support
2280/2260/2242/2230
Max. Power Supply
5 V/3 A (max 3A: Pogo pin 2A + PCIe connector 1A)
Cable
FPC
Assembly Method
Back installation
Dimensions
87 x 55 x 10 mm
Included
1x Seeed Studio PCIe 3.0 to Dual M.2 HAT for Raspberry Pi 5
2x FPC cables (50 mm)
1x Screws & stud pack
Downloads
Wiki
The JOY-iT JDS2960 is a 2-channel signal generator capable of producing signals up to 60 MHz. Its compact design and the option to operate it with a power bank make it ideal for mobile use.
With a variety of waveforms, including sine, square, triangle, pulse, half-wave, and more, it is suitable for various measurement technology applications.
Additionally, the JDS2960 features a 1-channel frequency allocation. Its high frequency accuracy of ±20 ppm and stability of ±1 ppm/3 h ensure excellent signal quality and great flexibility.
The 2.4-inch TFT color display provides user-friendly operation and enables a wide range of applications.
Features
2 Channels
Up to 60 MHz
Robust aluminum housing
1-channel frequency counter
Up to 20 Vpp
Many different pre-programmed waveforms and up to 60 user-defined waveforms
Pulse function
Specifications
Channels
2-channel Signal Generator1-channel Frequency meter
Frequency range
Sine: 0-60 MHzSquare, triangle: 0-25 MHzTTL, Pulse: 0-6 MHz
Signal forms
Sine, square, triangle, pulse, half/solid wave, exponential rise/fall, etc.
Measuring range frequency counter
1-100 MHz
Frequency accuracy
±20 ppm
Frequency stability
±1 ppm/3 h
Sampling rate
266 MSa/s
Display
2,4" TFT color LCD
Vertical shaft resolution
14 bits
Amplitude range
<10 MHz: 0-20 Vpp>10 MHz: 0-10 Vpp
Amplitude resolution
1 mV
Amplitude stability
±5%/5h
Amplitude flatness
<10 MHz: ±5%>10 MHz: ±10%
Impedance of output
50 Ω ±10%
Distortion factor
<0.8% (20 Hz-20 KHz, 0 dBm)
Dimensions
145 x 95 x 55 mm
Weight
900 g
Included
1x JOY-iT JDS2960 2-ch Signal Generator
1x Power supply unit
1x BNC-BNC cable
2x BNC crocodile clip cables
1x USB-DC power cable
1x USB data cable
Downloads
Datasheet
Manual
Software
Take control of your smart environment with the compact and powerful 4-inch ESP32-S3 IPS Touchscreen Control Panel. Designed for high performance and versatility, this sleek 86-box format panel integrates advanced connectivity, intuitive touch control, and real-time environmental sensing.
Features
Powerful Core Module WT32-S3-WROVER-N16R8
4-inch IPS full-screen display
Resolution: 480 x 480 pixels (RGB565 format)
Screen Driver IC: GC9503V
Touch Controller IC: FT6336U
Equipped with an SHT20 Temperature and Humidity Sensor for real-time monitoring of environmental conditions.
RS485 Interface using an automatic transceiver circuit
Built-in WiFi and Bluetooth
Applications
Smart Home Control Panels
Industrial Automation Interfaces
Environmental Monitoring Systems
IoT Projects and Custom Smart Solutions
The JLINK V9 USB-JTAG Arm Emulator/Debugger is a high-performance and reliable tool for programming and debugging ARM Cortex-M, Cortex-A/R, and other supported microcontrollers via JTAG and SWD interfaces.
Features
Universal Compatibility: Supports a wide range of ARM-based MCUs and cores including Cortex-M0, M3, M4, M7, A5, A7, A9, and R4.
High-Speed Performance: Fast data throughput for both flash programming and real-time debugging with minimal latency.
Multi-Interface Support: Offers both JTAG and SWD modes, enabling flexible use in different development environments.
Plug & Play via USB: Easy connection to your PC with USB 2.0 interface; no external power supply required.
Robust Software Support: Fully compatible with SEGGER J-Link software tools and supported by major IDEs including Keil MDK, IAR EWARM, SEGGER Embedded Studio, and others.
Included
1x JLINK V9 USB-JTAG Arm Emulator/Debugger
1x USB Cable
1x Connector Cable
The PeakTech 1073 smart digital multimeter combines state-of-the-art technology with an impressive range of functions in a compact design. It measures voltages up to 600 V AC/DC, is CAT III certified and features True RMS for precise measurements with varying voltages. The integrated NCV voltage tester enables non-contact voltage detection, while the LIVE test reliably identifies phases and neutral conductors.
Thanks to the automatic search of the measuring function, you no longer need a rotary selector switch. The multimeter automatically recognizes what is being measured and adjusts itself accordingly. The 4000-digit LCD display with blue backlighting ensures clear readability of the measured values and changes to red when measuring ranges are exceeded or the NCV voltage tester detects a voltage.
In addition to the standard measurements for voltage, current (AC & DC), resistance, continuity, diode test and temperature, this multimeter also offers capacitance and frequency measurements.
Features
Smart True RMS multimeter with automatic function selection
Manual function selection possible at the touch of a button
3¾ digit LCD display with 4,000 counts
Backlight (blue/red) and LED light
Continuity test and diode test function
Capacitance, temperature & frequency measurement
Live test and NCV voltage tester
Auto-Power-Off and battery status indicator
Sturdy ABS plastic housing
Safety: EN 61010-1, CAT III 600 V
Specifications
Digital counts
4000
Basic Accuracy DC
±0.5%
Over voltage category
CAT III 600 V
Display Type
LCD
Range selection
Auto
Auto-Scan
Yes
LED-lamp
Yes
NCV
Yes
True RMS
Yes
V DC max.
600 V
A AC max.
10 A
Hz max.
4 kHz
Capacitance max.
1 mF
OHM max.
40 MΩ
Temp. max.
1200°C (2192°F)
Temp. min.
−200°C (−328°F)
mA DC max.
4000 mA
V AC max.
600 V
A DC max.
10 A
mA AC max.
4000 mA
Power supply
2x 1.5 V AAA batteries
Dimensions
130 x 63 x 35 mm
Weight
116 g (incl. batteries)
Included
1x PeakTech 1073 Multimeter
2x Test leads
1x Thermocouple
2x Batteries
1x Manual
Downloads
Manual
Discover the perfect fusion of science, music, and visual spectacle!
This compact yet powerful musical Tesla coil is designed with an advanced circuit and an upgraded booster top coil to produce long, thick lightning arcs – bringing raw energy to life right before your eyes.
Two Modes for Twice the Fun
Long Arc Mode: Emits lightning at a fixed frequency. At medium power, the arcs are safe to touch – giving only a slight tingling sensation.
Music Mode: Connect via Bluetooth and watch the arcs dance in sync with the music. It plays square wave tones, concentrating the energy into a stunning sparkling melody.
Stable Bluetooth & Smart Design
Equipped with a custom-developed Bluetooth chip, the coil connects smoothly with any smartphone, computer, or Bluetooth-enabled device. It also supports USB-C for added convenience. The coil is coated with a gold-clear ink for improved dust resistance and enhanced durability.
Easy Setup – Instant Magic
No audio cables needed! Just tighten the discharge pin, turn down the power and frequency knobs, plug it in – and watch the magic unfold. Whether placed vertically or horizontally, this Tesla coil puts on a mesmerizing show every time.
Fun Meets Education
More than just a gadget, this Tesla coil is an engaging tool for science education. It can wirelessly light up gas tubes or even bubbles, and the touchable arcs are completely safe to interact with. It's an unforgettable gift and a futuristic piece of art that’ll turn heads on any desk.
Specifications
Body Material
Transparent acrylic
Input Voltage
48 V
Discharge Frequency
5-50 Hz (lightning mode)
Included
Power adapter (EU)
Note: Before powering on, always turn both knobs fully counterclockwise to avoid sudden loud shocks from the arc.
Practical Applications and Project with Arduino, ESP32, and RP2040
Immerse yourself in the fascinating world of control engineering with Arduino and ESP32! This book offers you a practical introduction to classic and modern control methods, including PID controllers, fuzzy logic, and sliding-mode controllers.
In the first part, you will learn the basics of the popular Arduino controllers, such as the Arduino Uno and the ESP32, as well as the integration of sensors for temperature and pH measurement (NTC, PT100, PT1000, and pH sensor).
You will learn how to use these sensors in various projects and how to visualize data on a Nextion TFT display. The course continues with an introduction to actuators such as MOSFET switches, H-bridges, and solid-state relays, which are used to control motors and actuators. You will learn to analyze and model controlled systems, including PT1 and PT2 control.
The book focuses on the implementation of fuzzy and PID controllers for controlling temperature and DC motors. Both the Arduino Uno and the ESP32 are used. The sliding-mode controller is also introduced.
In the second-to-last chapter, you will explore the basics of neural networks and learn how machine learning can be used on an Arduino. In the last chapter, there is a practical example of a fuzzy controller for feeding electricity into the household grid.
This book is the perfect choice for engineers, students, and electronics engineers who want to expand their projects with innovative control techniques.
This bundle is all about designing projects based on the 555 timer IC. The book features over 45 fully tested and documented projects. Together with the kit, which contains more than 130 through-hole components, you can build all the projects described on a breadboard. The setup also makes it easy to modify and experiment with the projects.
Over 45 Builds for the Legendary 555 Chip (and the 556, 558)
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
Kit Contents
Resistors
1x 15 kΩ
1x 68 kΩ
2x 47 kΩ
1x 82 kΩ
2x 820 Ω
1x 8.2 kΩ
3x 10 kΩ
1x 1.8 kΩ
1x 6.8 kΩ
14x 2.2 kΩ
10x 680 Ω
1x 27 kΩ
1x 5.6 kΩ
1x 560 kΩ
1x 4.7 kΩ
1x 3.3 kΩ
3x 33 kΩ
1x 36 kΩ
2x 100 kΩ
5x 1 kΩ
1x 3.9 kΩ
2x 56 kΩ
2x 12 kΩ
1x 10 kΩ potentiometer
1x 1 MΩ potentiometer
2x 50 kΩ potentiometer
3x 20 kΩ potentiometer
1x 10 kΩ potentiometer
1x 10 kΩ potentiometer
1x 50 kΩ potentiometer
1x 100 kΩ potentiometer
1x 50 kΩ potentiometer
Capacitors
1x 0.33 μF
1x 1 μF
1x 10 nF
1x 22 nF
1x 47 nF
1x 100 nF
1x 10 μF electrolytic
1x 33 μF electrolytic
2x 100 μF electrolytic
LEDs
10x 5 mm red LED
10x 3 mm red LED
3x 3 mm yellow LED
3x 3 mm green LED
1x Common-cathode 7-segment LED
Semiconductors
3x 555 timer
1x CD4017 counter
1x CD4026 counter
1x CD4011 NAND gate
4x 1N4148 diode
1x IRFZ46N MOSFET
1x Thermistor
1x Light dependent resistor (LDR)
Miscellaneous
1x Passive buzzer
1x Active buzzer
1x SG90 servo
1x 8 Ω mini loudspeaker
1x 9 V DC brushed motor
1x 5 V relay
1x 9 V battery clip
7x Pushbutton switches
1x Breadboard
1x Breadboard jumper wires