Double Backlit User Interface: The dual backlit button is just like the single backlit button, but twice the fun! Use this component when you need to operate something up and down, or right to left. Using cut-out vinyl, you can create icons and stickers on fabric that show your users button functionality.
Features
Component: 4.6 x 6.3"
Individual Button Size: 1" radius circle
Press Durability: Up to 10,000 presses under 5lbf
LED Voltage: 5 V
USB-A to Micro USB-B power cable (power supply only) 1.5 m length with ON/OFF switch Add the ability to control the power to your USB-powered project simply by plugging a cable with a switch between the USB power port and the USB cable. There's no more need to pull the cable to restart or reboot your devices, just press the button to turn on and off, which helps to prevent the USB connector from wear and tear due to frequent pulling and inserting the USB cable. It can be used as a power supply up to 2 A. Not applicable for data transfer.
Learn to interface and program hardware devices in a wide range of useful applications, using ARM7 microcontrollers and the C programming language. Examples covered in full detail include a simple LED to a multi-megabyte SD card running the FAT file system.
Features of this book
Build prototype circuits on breadboard or Veroboard and interface to ARM microcontrollers.
A 32-bit ARM7 microcontroller is used in interfacing and software examples.
Interfacing principles apply to other ARM microcontrollers and other non-ARM microcontrollers as well.
Example programs are written in the C programming language.
Use only free or open source software.
Download and install all programming tools from the Internet.
Template project files are provided for easy project creation.
Hardware
Interface to LEDs, transistors, optocouplers, relays, solenoids, switches, keypads, LCD displays, seven segment displays, DC motors, stepper motors, external analogue signals using the ADC, RS232, RS-485, TWI, USB, SPI and SD memory cards.
Software
Once hardware has been interfaced to a microcontroller, software must be written to control the hardware. You will learn how to write programs to operate externally interfaced hardware devices, use timers and interrupts. Also learn how to port FAT file system code for use with an SD memory card, program the PWM to produce an audio sine wave, program the PWM to speed control a DC motor and more.
A chapter on more advanced ARM microcontrollers is included with an overview of some of the newest ARM microcontrollers and their features.
Features Type C cable USB type C is suitable for new version Raspberry Pi 4 No need to pull the cable to restart or reboot your Pi, just press the button to turn your Pi on and off Can be used as power supply for the Pi up to 2 Amp Help prevent the Pi's USB connector from wear and tear due to frequently pulling and inserting the USB cable Specifications Interface: USB Type C Current: 3 A Length: 1.5 m Use for: Raspberry Pi 4 Model B Packing List: 1x USB Type C power cable
This USB Stick contains more than 300 Arduino-related articles published in Elektor Magazine. The content includes both background articles and projects on the following topics:
Software & hardware development: Tutorials on Arduino software development using Arduino IDE, Atmel Studio, Shields, and essential programming concepts.
Learning: The Microcontroller Bootcamp offers a structured approach to programming embedded systems.
Data acquisition & measurement: Projects such as a 16-bit data logger, lathe tachometer, and an AC grid analyzer for capturing and analyzing real-time signals.
Wireless communication: Learn how to implement wireless networks, create an Android interface, and communicate effectively with microcontrollers.
Robotics and automation: This covers the Arduino Nano Robot Controller, supporting boards for automation, and explores various Arduino shields to enhance functionality.
Self-build projects: Unique projects such as laser projection, Numitron clock and thermometer, ELF receiver, Theremino, and touch LED interfaces highlight creative applications.
Whether you're a beginner or an experienced maker, this collection is a valuable resource for learning, experimenting, and pushing the boundaries of Arduino technology.
SmartScope is a compact 2-channel USB oscilloscope with a bandwidth of 30 MHz and a sampling rate of 2x 100 MSa/s. It is compatible with all major platforms, including Windows, macOS, Linux, and Android. The operation and display of measurement signals are done via smartphone, tablet, or PC. Additionally, a logic analyzer and a signal generator are integrated.
Even more, you can get mobile with it: take the SmartScope on the road, thanks to the single-cable connectivity. Everything is going to be intuitive: pointing, pinching and swiping finally replaces the clunky interfaces of old scopes.
With the SmartScope you develop your digital interfaces using the 100 MS/s logic analyzer. With this tool you can design any signal you want using Excel, then upload it to the built-in Arbitrary Waveform Generator (AWG). At the end capture the voltage at any point of your design at 100 million times each second.
The Software for the support of Windows / macOS / Linux / Android and Export formats (Excel .csv / Matlab .mat) are given.
Features
Channel sampled at 100 MHz/s each
AC/DC coupling on analog inputs
100% silent
64 Mbit RAM: x10000 zoom
Arbitrary Waveform Generator
8 digital inputs at 100 MS/s each
4 digital outputs at 100 MS/s each
Externally power your scope in case your mobile can't supply the juice.
Specifications
Oscilloscope
Bandwidth
30 MHz (-3 dB point)
Sample rate
2x 100 MS/s
Channels
2
Max pre-trigger position
16x full scale
Max post-trigger position
Full scale
Max full voltage scale
10 V/div (±35 V input range)
Min full voltage scale
20 mV/div
Analog input range
-35 V, +35 V
Max input peak-to-peak
40 V
Signal coupling
AC / DC
Precision
8 bit
Input impedance
1 MΩ // 10 pF
Waverforms
200 waveforms/s
Data delay to host
< 10 ms
Sample depth
Up to 4 million samples per channel
External trigger
Yes
Logic Analyzer
Input channels
8
Input impedance
100 kOhm // 2 pF to GND
Sample rate
100 MS/s
Logic level
1.8 V to 5.0 V
Diode protection
Bidirectional
Input data buffer
4 million samples
Waverforms
200 waveforms/s
Data delay to host
< 10 ms
Protocol decoders
I²C, SPI, UART, I²S integrated User extensible
Wave Generator (Analog Output)
Output channels
1
Data rate
Up to 50 MS/s
Output level
0-3.3 V (Opamp driven)
Output buffer
Up to 2048 samples
Max slew rate
30 ns/V
Step
13 mV
Wave Generator (Digital Output)
Channels
4
Data rate
Up to 100 MS/s
Output level
3.3 V or 5 V (selectable)
Output buffer
Up to 2048 samples
Diode protected
Yes
Programmable Logic
USB controller
MicroChip PIC18F14K50
USB interface
PicKit3 or USB flashable
FPGA
Xilinx Spartan 6
FPGA interface
JTAG and USB flashable
Size & Weight
Dimensions (L x W x D)
110 x 64 x 24.2 mm (4.33 x 2.52 x 0.95")
Weight
158 g
Case
Aluminium
Connectivity
Device/Host
mini USB included
Record waveforms
Store Matlab (.mat) or Excel (.csv) files through Dropbox
Analog
BNC 2 probes included
Digital
8x 0.1" pitch, probes (included)
Sync
USB micro B-B
Power
USB micro B (optional)
Included
1x SmartScope USB Oscilloscope
2x Analog probes
1x Digital probe cable
1x USB cable
Downloads
Manual
Software
GitHub
Wiki
The JOY-iT AT34 is a small but multifunctional USB Multimeter. By supporting current Quick Charge standards it can also easily be used in conjunction with current handheld hardware.
Specifications
Screen
0.96" IPS Display
Refresh Rate
2 Hz
Interface
USB 3.0 (2.0 compatible)
Quick Charge Recognition
QC2.0, QC3.0, Apple 2.4 A / 2.1 A / 1 A / 0.5 A, Android DCP, Samsung
Voltage Measurement Range
3.7-30 V
Voltage Resolution
0.01 V
Voltage Accuracy
±0,8% (+4 digits)
Current Measurement Range
0-4 A
Current Resolution
0.001 A
Current Accuracy
±1% (+4 digits)
Power Measurement Range
0-120 W
Capacity Accumulation Range
0-99999 mAh
Energy Accumulation Range
0-999,99 Wh
Load Impedance Range
1-9999.9 Ω
Temperature Measurement Range
0-80°C
Operating Temperature Range
0-45°C
Temperature Measurement Error
±3°C
Dimensions
64 x 22 x 12 mm
Weight
28 g
Downloads
Datasheet
Manual
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
This is another great IIC/I²C/TWI/SPI Serial Interface. As the pin resources of controller is limited, your project may be not able to use normal LCD shield after connected with a certain quantity of sensors or SD card. However, with this I²C interface module, you will be able to realize data display via only 2 wires. If you already has I²C devices in your project, this LCD module actually cost no more resources at all. It is fantastic for based project. I²C Address: 0X20~0X27 (the original address is 0X20,you can change it yourself) The backlight and contrast is adjusted by potentiometer Comes with 2 IIC interface, which can be connected by Dupont Line or IIC dedicated cable I²C Address: 0x27 (I²C Address: 0X20~0X27 (the original address is 0X27,you can change it yourself) Specifications Compatible for 1602 LCD Supply voltage: 5 V Weight: 5 g Size: 5.5 x 2.3 x 1.4 cm
The Raspberry Pi USB 3 Hub expands your device connectivity by converting a single USB-A port into four USB 3.0 ports. With an optional external USB-C power input, it can support high-power peripherals, while lower-power peripherals work without additional power. The USB 3 Hub is fully tested for seamless compatibility with all Raspberry Pi products.
Features
Single Upstream Connection: USB 3.0 Type-A connector with an 8 cm captive cable
Four Downstream Ports: USB 3.0 Type-A ports for multiple device connections
High-Speed Data Transfer: Supports speeds up to 5 Gbps
Compatibility: Works with USB 3.0 Type-A host ports and is backward-compatible with USB 2.0 ports
Downloads
Datasheet
Some Highlights from the contents Surround-sound decoder Compact amp Sampling rate converter Battery powered preamplifier Titan 2000 amplifier Crescendo Millennium amplifier Audio-DAC/ADC IR-S/PDFI receiver and transmitter High-End Power Amp Hi-fi Wireless Headset Paraphase Tone Control and more… Using Adobe Reader you are able to browse and search the articles on your computer, as well as print texts, circuit diagrams and PCB layouts.
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by Jean-François Simon
Fnirsi FNB58 USB Tester (Review)
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