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SparkFun RFM69突圍（915MHz的）
原名
SparkFun RFM69 Breakout (915MHz)
貨號
WRL-12775
特價
328
資料來源：https://www.sparkfun.com/products/12775
This is the SparkFun RFM69 Breakout, a small piece of tech that breaks out all the pins available on the RFM69HCW module as well as making the transceiver easy to use. The RFM69HCW is an inexpensive and versatile radio module that operates in the unlicensed ISM (Industry, Science and Medicine) radio band. It’s perfect for building inexpensive short-range wireless networks of sensors and actuators for home automation, citizen science and more.
This RFM69HCW operates on the 915MHz frequency and is capable of transmitting at up to 100mW and up to 300kbps, but you can change both of those values to fit your application. For example, you can maximize range by increasing the transmit power and reducing the data rate, or you can reduce both for short-range sensor networks that sip battery power. At full power and with simple wire antennas, the RFM69 breakout can get messages from one side of a large office building to the other through numerous internal walls. In open air you can reach 500 meters or more. With more complex antennas and modulation schemes, similar parts have successfully transmitted from space to the ground (by very smart amateur radio enthusiasts; your mileage may vary)!
The RFM69HCW uses an SPI (Serial Peripheral Interface) to communicate with a host microcontroller, and several good Arduino libraries are available. It supports up to 256 networks of 255 nodes per network, features AES encryption to keep your data private, and transmits data packets up to 66 bytes long.
SparkFun sells two versions of the RFM69HCW: this 915MHz version and a 434MHz version. Although the ISM band is license-free, the band itself is different in different areas. Very roughly, 915MHz is for use in the Americas, and the 434MHz version is for use in Europe, Asia and Africa. Check your local regulations for other areas.
Get Started with the RFM69HCW Hookup Guide
Features:
- Transmit power: -18dBm (0.016mW) to +20dBm (100mW) in 1dBm steps
- Receive sensitivity: down to -120dBm at 1.2kbps
- Modulation types: FSK GFSK MSK GMSK OOK
- Bit rates (FSK): 1.2kbps to 300kbps
- Voltage range: 1.8V to 3.6V
- Current consumption: 0.1uA sleep, 1.25mA standby, 16mA receive, 130mA transmit (max)
- Encryption: AES 128-bit (optional)
- Packet buffer (FIFO): 66 bytes
- 0.8" x 1.1"
Documents:
這是SparkFun RFM69突圍，一小塊高科技，打破了所有的引腳可用RFM69HCW模塊以及使收發器易於使用。該RFM69HCW是，在未經許可的ISM（工業，科學和醫學）無線電頻段運行的廉價和靈活的無線電模塊。這是完美的建築傳感器和執行器的廉價的短距離無線網絡，家庭自動化，公民科學等等。
這RFM69HCW在915MHz的頻率下工作，並且能夠在高達100mW的和高達300kbps的傳輸的，但你可以改變這兩個值，以滿足您的應用。例如，您可以通過增加發射功率，並降低數據速率範圍最大化，也可以同時降低短距離傳感器網絡，抿電池電量。在滿功率並用簡單的線天線，該RFM69突破可通過眾多的內部牆壁從一個大型寫字樓到另一邊的消息。在露天就可以達到500米以上。隨著越來越多的複雜的天線和調製方案，類似部件已成功地從太空傳送到地面（由非常聰明的業餘無線電愛好者 ，你的里程可能會有所不同）！
該RFM69HCW使用的SPI（串行外設接口）與主機微控制器通信，和幾個很好的Arduino的庫可供選擇。它支持高達255的網絡節點256的網絡，使用了AES加密來保證數據的私密性，以及多達66個字節傳輸的數據包。
SparkFun銷售RFM69HCW的兩個版本：此版本為915MHz和434MHz的版本 。儘管ISM頻段是免許可證，樂隊本身是在不同的領域不同。大致來說，915MHz的是在美洲使用，而434MHz的版本是在歐洲，亞洲和非洲使用。檢查是否有其他方面的地方法規。
尺寸：0.8“×1.1”
特徵：
- 在1dBm的步驟-18dBm（0.016mW）到+ 20dBm的（100mW的）：發射功率
- 接收靈敏度：低至-120dBm在1.2kbps
- 調製類型：FSK GFSK MSK GMSK OOK
- 比特率（FSK）：1.2kbps至300kbps的
- 電壓範圍：1.8V至3.6V
- 電流消耗：睡眠為0.1uA，1.25毫安待機，16毫安接收，發送130毫安（最大值）
- 加密：AES 128位（選配）
- 包緩衝器（FIFO）：66字節
文件：
- 概要
- 鷹文件
- 聯播指南
- 數據表 （RFM69HCW）
- LowPowerLab RFM69庫
- Radiohead的圖書館
- GitHub上
