Practical electronics 09/2016

This IoT board in the Feather format is designed for use with Li-Ion/LiPo batteries and solar panels. Equipped with a dual-core Xtensa LX7 processor, it offers Wi-Fi and Bluetooth 5 LE + Mesh connectivity, and low power consumption in deep sleep mode. The board features intelligent power management, solar charging support, numerous communication interfaces, and full compatibility with FeatherWing and STEMMA QT.

The Zeenko 10 dB SMA attenuator is a solid and precise component for RF measurement paths, useful in diagnostics, calibration and protecting devices such as the tinySA, nanoVNA or RF generators. It enables safe measurements and improves impedance matching quality over a wide frequency range.

Finger mill GRAPHITE 56H203 with a diameter of 8 mm and a working height of 19 mm intended for use with upper-spindle routers equipped with an 8 mm holder. The sintered carbide blades ensure precise finishing and durability when machining wood-based materials and PVC. Ideal for workshop and assembly applications.

Finger mill GRAPHITE 56H205 with a diameter of 20 mm and a working height of 19 mm adapted for routers with an 8 mm holder. The sintered carbide blades ensure durability and high-quality surface finishing. Intended for machining wood and wood-based materials in workshop conditions.

THT LED in a 5 x 5 mm square package with a flat top, emitting red light with a dominant wavelength of 617 nm. Luminous intensity of 5-10 mcd at 10 mA and a wide 140° viewing angle enable use in signaling circuits and control panels. L-1553IDT

Crowtail – Dry-Reed Relay 2.0 is a compact reed relay with hermetically sealed contacts, providing fast and reliable switching. Used in automation systems, microelectronics, and detection systems requiring precision and durability.

Crowtail – Digital Temperature Sensor 2.0 is a precise TMP102 digital sensor with an I2C interface, operating in the range of –40°C to +125°C. Intended for use in temperature-measurement systems in automation, consumer electronics, and environmental monitoring.

This IoT audio development kit is based on the ESP32-A1S module with a dual-core Xtensa LX6 processor. It enables high-quality audio playback with 3.5mm audio outputs and 4Ω/3W speaker connectors. It supports Wi-Fi, Bluetooth 4.2, microSD cards up to 64GB, and the ESP-ADF framework with Google Assistant and Amazon Alexa integration.

This development board is based on the Raspberry Pi RP2350 microcontroller with an Arm Cortex-M33 or RISC-V Hazard3 core. It offers 2.4/5 GHz Wi-Fi, Bluetooth 5.0, and 8 MB of Flash memory, delivering high performance in a compact form factor. With a USB-C port and full Pico W compatibility, it\'s ideal for IoT projects, home automation, and learning to program. Elecrow RP2350 Pico W5 Board

Crowtail-Sound Sensor 2.0 is an analog sound sensor with a built-in amplifier, intended for measuring sound intensity levels. Ideal for interactive projects, sound-responsive systems and acoustic monitoring.

Crowtail-MOSFET 2.0 enables controlling devices powered with up to 50 V DC using a low-voltage signal from a microcontroller. It is used in projects requiring power isolation or switching, such as fans, LED strips or DC motors.

The Crowtail-Linear Potentiometer-V2.0 module with a 10 kΩ slide potentiometer enables analog voltage adjustment in electronic projects. Dedicated to precise control of parameter values in regulation systems and user interfaces.

Crowtail – BME280 Atmospheric Sensor 2.0 is a multifunctional environmental sensor measuring temperature, humidity, and pressure, with an I2C interface and low power consumption. It is used in weather applications, home automation, and mobile systems.

Crowtail – GP02 GPS/BDS/GNSS is a compact positioning module with support for three navigation systems, accuracy below 2 m, and a UART interface. Used in projects requiring precise real-time positioning, such as data loggers, vehicle tracking, and field devices.

Crowtail – Dual Coil Latching Relay Module 2.0 is an energy-efficient dual-channel latching relay that retains its state after power loss. Intended for use in automation systems, remote control, and battery-powered projects.