آر اف (فرکانس رادیویی) و بی‌سیم ماژول‌ فرستنده‌گیرنده و مودم آر اف

Product Attributes

Introduction

The Onion Omega2S is a Wi-Fi enabled, Linux compute module, designed specifically for IoT applications. It provides a drop-in, low-power solution ideal for building IoT hubs and devices. The module measures 34×20×2.8 mm and features a MIPS 24KEc processor running at 580 MHz, built-in DDR2 DRAM, flash storage, and a 2.4 GHz 802.11b/g/n Wi-Fi radio. It supports a wide variety of I/O protocols, with 42 pins available to the developer. The module is self-contained and only requires a power supply and an external WiFi antenna to operate. By virtue of the Linux operating system, developers can create their own applications using a programming language of their choice, and make use of existing network stacks and a rich set of software packages to implement their desired software functionality. Key highlights:

• Drop-in Wi-Fi enabled Linux compute module for IoT applications
• Dual mode 2.4 GHz 802.11 b/g/n Wi-Fi - simultaneously host a WiFi access point and connect to existing WiFi networks
• CPU, memory, and flash storage are built-in - Only requires external antenna
• Runs OpenWRT Linux operating system out of the box Features USB, SD/eMMC storage support, ethernet, 3x UARTs, I2C, SPI, GPIOs interfaces
• FCC and CE certified Highlights on the software and operating system:
• The operating system is based on the OpenWRT Linux distribution
  • Support for modern programming languages: Python (2.7 and 3.6), NodeJS (8.10), GoLang, C, C++, and others
• The default device operating system image includes:
  • Onion’s enhanced WiFi driver
  • A package manager (opkg)
  • A lightweight web server (uhttpd) and an extendable Remote Procedure Call daemon (RPCD and ubus)
  • Utilities to control the GPIOs (gpioctl, fast-gpio) and pin multiplexing (omega2-ctrl)
  • The sysfs interface for programmatic control of the hardware interfaces
  • OnionOS, a web-based, graphical user interface for the Omega2 family The build system for creating the operating system image and software packages is open source, so developers can create their own customized operating system images tailored to their needs.

Features

• The processor is based on the MIPS architecture, it is a MIPS 24KEc, little-endian, 32-bit RISC core that operates at 580 MHz with a 64 KB Instruction Cache and 32 KB Data Cache.
• Features on-board 16-bit DDR2 DRAM memory operating at 400 MHz. Omega2S features 64 MB memory, Omega2S+ features 128 MB memory.
• Features on-board SPI flash storage that contains the bootloader, Linux OS, and WiFi calibration data. Omega2S features 24-bit addressed 16 MB flash storage, Omega2S+ features 32-bit addressed 32 MB flash storage.
• The Omega supports 2.4 GHz IEEE 802.11 b/g/n WiFi with a maximum 150 Mbps PHY data rate. The embedded RF front-end is 1T1R, meaning that it is used for both transmitting and receiving by virtue of time-multiplexing.
• The Omega’s WiFi interface can simultaneously host its own WiFi Access Point while connecting to another WiFi network.
• The Omega2S supports on-board antennas as well as external antennas - there is no built-in antenna on the module.
• There is one (1) USB 2.0 host controller available on dedicated pins.
• One (1) SPI interface is available. The interface supports half-duplex transmissions and can operate in host-mode only. The maximum SPI clock frequency is 40 MHz.