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LoRa-E5 Development Kit is an easy-to-use compact development toolset for you to unlock the powerful performance of the LoRa-E5 STM32WLE5JC. It consists of a LoRa-E5 Dev Board, an antenna (EU868), a USB type C cable, and a 2-AA 3 V Battery Holder. LoRa-E5 Dev Board embedded with LoRa-E5 STM32WLE5JC Module, which is the world-first combo of LoRa RF and MCU chip into one single tiny chip and is FCC and CE certified. It is powered by ARM Cortex-M4 core and Semtech SX126X LoRa chip, supports both LoRaWAN and LoRa protocol on the worldwide frequency and (G)FSK, BPSK, (G)MSK, and LoRa modulations. The LoRa-E5 development board features a very long transmission range, extremely low power consumption and user-friendly interfaces. LoRa-E5 Dev Board has a long-distance transmission range of LoRa-E5 up to 10 km in an open area. The sleep current of LoRa-E5 modules on board is as low as 2.1 uA (WOR mode). It is designed with industrial standards with a wide working temperature at -40℃ ~ 85℃, high sensitivity between -116.5 dBm ~ -136 dBm, and power output up to +20.8 dBm at 3.3 V. LoRa-E5 Dev Board also has rich interfaces. Developed to unlock the full functionality of the LoRa-E5 module, LoRa-E5 Dev Board has led out full 28 pins of LoRa-E5 and provides with rich interfaces including Grove connectors, RS-485 terminal, male/female pin headers for you to connect sensors and modules with different connectors and data protocols, saving your time on wire soldering. You could also easily power the board by connecting the battery holder with 2-AA batteries, enabling temporary use when lacking an external power source. It is a user-friendly board for easy testing and rapid prototyping. Specifications Size LoRa-E5 Dev Board: 85.6 x 54 mm Voltage (supply) 3-5 V (Battery) / 5 V (USB-C) Voltage (output) EN 3V3 / 5 V Power (output) Up to +20.8 dBm at 3.3 V Frequency EU868 Protocol LoRaWAN Sensitivity -116.5 dBm ~ -136 dBm Interfaces USB Type C / JST2.0 / 3x Grove (2x I²C/1x UART) / RS485 / SMA-K / IPEX Modulation LoRa, (G)FSK, (G)MSK, BPSK Working temperature -40℃ ~ 85℃ Current LoRa-E5 module sleep current as low as 2.1 uA (WOR mode) Included 1x LoRa-E5 Dev Board 1x Antenna (EU868) 1x USB Type C Cable (20 cm) 1x 2-AA 3 V Battery Holder

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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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You can use RF Explorer 3G Combo equally well outdoor and indoor, and you can also connect it to a PC for extra functionality using standard mini-USB 2.0 connector. This model includes a WSUB1G baseline unit plus an RFEMWSUB3G Expansion Module conveniently assembled and tested. It comes with two SMA connectors and two antennas,a dual band telescopic 144 / 430 MHz antenna for all Sub-GHz frequencies and a whip helical antenna for 2.4 GHz band. Additional, specific band antennas may be needed to cover efficiently some of the frequencies supported. The combination of these two models offer the wide band coverage of the WSUB3G module, together with the highest sensitivity and quick response of the WSUB1G model for the popular sub-1GHz frequencies. Features Pocket size and light weight Solid aluminum metal case Includes a transport EVA carry case for RF Explorer Spectrum Analyzer mode with Peak Max and Hold, Normal, Overwrite and Averaging modes Lifetime free firmware upgrades available, open to community requested features High capacity Lipo for 16 hours+ of continuous run, rechargeable by USB Windows PC client Open Source Can be extended with internal Expansion Modules for additional band and functionality Wide band coverage to all popular RF frequencies, starting at 15 MHz and going up to 2.7 GHz. This includes very interesting frequency areas such as 2 m HAM radio, all VHF and UHF, FM radio, GPS, WiFi and WiMax, Bluetooth, etc. Firmware: RF Explorer 3G Combo is delivered with upgraded firmware v1.09. Note some of the features and operation accuracy will be improved in upcoming free firmware revisions. Specifications Battery Lithium Cells / Batteries contained in equipment UN3481 - PI967 Frequency band 15-2700 MHz Frequency span 112 KHz - 600 MHz Graphics LCD 128 x 64 pixels, great visibility outdoors PC Windows client supports Windows XP/Vista/Win7 both 32 and 64bits Backlight for great indoor visibility 2 standard SMA 50 ohms connector, one for Sub-GHz wideband Nagoya NA-773 telescopic antenna included and another 2.4 GHz one for 15-2700 MHz band with helical antenna included. Amplitude resolution 0.5 dBm Dynamic range Left SMA port (WSUB1G) -115 dBm to 0 dBm Right SMA port (WSUB3G) -110 dBm to -10 dBm Absolute Max input power Left SMA port (WSUB1G) +5 dBm Right SMA port (WSUB3G) +30 dBm Average noise level (typical) -110 dBm Frequency stability and accuracy (typical) +-10 ppm Amplitude stability and accuracy (typical) +-6 dBm Frequency resolution 1 KHz Resolution bandwidth (RBW) automatic 3 KHz to 600 KHz Weight 185 g Size 113 x 70 x 25 mm Included RF Explorer 3G Combo Nagoya NA-773 wideband telescopic antenna 2.4 GHz band antenna EVA Case Documentation For more info and to get started with your RF Explorer, visit the start page. For questions and support, please visit https://support.rf-explorer.com

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Features Internal LNA amplifier and selectable attenuator Low frequency support from 50KHz covering LF, MF, HF, VHF and UHF up to 960Mhz New HELP and SET buttons to improve user interface and configuration selection with 2-clicks Wide band coverage to all popular sub-1Ghz bands, including FM, TV and DTV, ISM, RFID, GSM, etc. Ideal choice for HAM bands from 160meters to 33cm Pocket size and light weight Solid metal case Spectrum Analyzer mode with Peak Max and Hold, Normal, Overwrite and Averaging modes High capacity internal Lithium battery for 20hs+ of continuous run, rechargeable by USB Multi-platform Windows/Linux/MacOS Open Source software and API libraries Can be extended with internal Expansion Modules for additional band and functionality Specifications Frequency band: 0.05 MHz - 960 MHz Frequency span: 0.1 MHz - 960 MHz Internal selectable LNA 25 dB gain Internal selectable Attenuator 30 dB Graphics LCD 128 x 64 pixels, great visibility outdoors Support included for Windows, Linux and MacOS X Backlight for great visibility indoor Internal Lithium Ion 1800mA/h rechargeable battery Standard SMA 50 Ω connector Wideband 144/433MHz dual band telescopic antenna included UHF 400-900 MHz rubber duck articulated antenna included Amplitude resolution: 0.5dBm Dynamic range: -125 dBm to 10 dBm Absolute Max input power: +30dBm Average noise level (typical LNA): -125 dBm Frequency stability and accuracy (typical): +-10 ppm Amplitude stability and accuracy (typical): +-2d Bm Frequency resolution: 1kHz Resolution bandwidth (RBW): automatic 2.6 kHz to 600 kHz Included 1x RF Explorer WSUB1G+ Spectrum Analyzer 1x Mini USB cable 1x Dual band 144/430MHz Telescopic antenna 1x UHF 400-900Mhz antenna 1x EVA case

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This Crowtail series 4G module is a high-performance LTE Cat1 wireless module. It uses the SIM A7670E communication module from Simcom and communicates through a UART interface, which enables 4G data transmission and voice communication. The module supports multiple LTE bands, including B1/B3/B5/B7/B8/B20, as well as WCDMA and GSM networks. In addition, it supports various protocols such as TCP/IP, FTP, HTTP, and multiple satellite navigation systems such as GPS, GLONASS, and BDS. The module comes with a charging interface and can be powered by a 3.7 V lithium battery or a 5 V USB-C interface. It also has a 3.5 mm headphone jack, and by connecting a headphone with a microphone, it can be used for making and receiving phone calls. Its compact size makes it easy to integrate into various IoT devices and meet various application requirements. Furthermore, its low power consumption and reliable performance are also the reasons why it is widely used in IoT, smart home, automotive, and industrial control fields. Features Integrate the A7670E communication module, enabling 4G data transmission and voice communication with low power consumption and high reliability Supports multiple LTE bands, including B1/B3/B5/B7/B8/B20, as well as WCDMA and GSM networks Supports various protocols such as TCP/IP, FTP, HTTP, and multiple satellite navigation systems such as GPS, GLONASS, and BDS Comes with a charging interface and a headphone jack, which can be used for making and receiving phone calls by connecting a headphone with a microphone Small but powerful, compact size makes it easy to integrate into various IoT devices. Specifications Main Chip: SIM A7670E LTE-FDD: B1/B3/B5/B7/B8/B20 GSM: 900/1800 MHz GSM/GPRS power class EGSM900: 4 (33 dBm ±2 dB) DCS1800: 1 (30 dBm ±2 dB) EDGE power class: EGSM900: E2 (27 dBm ±3 dB) DCS1800 : E1 (26 dBm +3 dB/-4 dB) LTE power class: 3 (23 dBm ±7 dB) Supply Voltage: 4 V ~ 4.2 V Power: 3.8 V LTE(Mbps): 10 (DL)/5 (UL) GPRS/EDGE(Kbps): 236.8 (DL)/236.8 (UL) Protocol: TCP/IP/IPV4/IPV6/Multi-PDP/FTP/FTPS /HTTP/HTTPS/DNS Communication interface: USB / UART Firmware Upgrade: USB/FOTA Support phonebook types: SM/FD/ON/AP/SDN Interfaces: 1x Power button, 1x BAT, 1x UART, 1x USB-C, 1x SIM Card slot Dimensions: 35 x 50 mm Included 1x Crowtail-4G SIM-A7670E 1x 4G GSM NB-IoT Antenna 1x GPS ceramic antenna Downloads Wiki A7670 AT Command Manual A7670 Datasheet Source Code

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miniSD Card Module

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Functionality, structure and handling of a power module For readers with first steps in power management the “Abc of Power Modules” contains the basic principles necessary for the selection and use of a power module. The book describes the technical relationships and parameters related to power modules and the basis for calculation and measurement techniques. Contents Basics This chapter describes the need of a DC/DC voltage converter and its basic functionality. Furthermore, various possibilities for realizing a voltage regulator are presented and the essential advantages of a power module are mentioned. Circuit topologies Circuit concepts, buck and boost topologies very frequently used with power modules are explained in detail and further circuit topologies are introduced. Technology, construction and regulation technology The mechanical construction of a power module is presented, which has a significant influence on EMC and thermal performance. Furthermore, control methods are explained and circuit design tips are provided in this chapter. Measuring methods Meaningful measurement results are absolutely necessary to assess a power module. The relevant measurement points and measurement methods are described in this chapter. Handling The aspects of storage and handling of power modules are explained, as well as their manufacturing and soldering processes. Selection of a power modules Important parameters and criteria for the optimal selection of a power module are presented in this section.

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This Wi-Fi module is based on the popular ESP8266 chip. The module is FCC and CE certified and RoHS compliant. Fully compatible with ESP-12E. 13 GPIO pins, 1 analog input, 4 MB flash memory.

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This e-book (pdf), a software-only follow up to the best-selling Elektor Visual Studio C# range of books, is aimed at Engineers, Scientists and Enthusiasts who want to learn about the C# language and development environment. It covers steps from installation, the .NET framework and object oriented programming, through to more advanced concepts including database applications, threading and multi-tasking, internet/network communications and writing DLLs. The DirectX chapters also include video capture. The e-book concludes with several chapters on writing Android applications in C# using the Xamarin add-on. This e-book is based on the Visual Studio 2015 development environment and latest C# additions including WPF applications, LINQ queries, Charts and new commands such as await and async. The latest Visual Studio debugging features (PerfTips, Diagnostic Tool window and IntellTrace) are covered. Finally, the Android chapters include GPS, E-mail and SMS applications. Additionally, the e-book provides free on-line access to extensive, well-documented examples — in a try for yourself style — together with links to the author’s videos, guiding you through the necessary steps to get the expected results.

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