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  • Adafruit Feather 32u4 RFM69HCW Packet Radio (868 or 915 MHz) RadioFruit

    Adafruit Adafruit Feather 32u4 RFM69HCW Packet Radio (868 or 915 MHz) RadioFruit

    This 900 MHz radio version can be used for either 868 MHz or 915 MHz transmission/reception – the exact radio frequency is determined when you load the software since it can be tuned around dynamically. At the Feather 32u4's heart is at ATmega32u4 clocked at 8 MHz and at 3.3 V logic. This chip has 32 K of flash and 2 K of RAM, with built in USB so not only does it have a USB-to-Serial program & debug capability built in with no need for an FTDI-like chip, it can also act like a mouse, keyboard, USB MIDI device, etc. To make it easy to use for portable projects, we added a connector for any 3.7 V Lithium polymer batteries and built in battery charging. You don't need a battery, it will run just fine straight from the micro USB connector. But, if you do have a battery, you can take it on the go, then plug in the USB to recharge. The Feather will automatically switch over to USB power when its available. We also tied the battery thru a divider to an analog pin, so you can measure and monitor the battery voltage to detect when you need a recharge. Features Measures 2.0' x 0.9' x 0.28' (51 x 23 x 8 mm) without headers soldered in Light as a (large?) feather – 5.5 grams ATmega32u4 @ 8 MHz with 3.3 V logic/power 3.3 V regulator with 500 mA peak current output USB native support, comes with USB bootloader and serial port debugging You also get tons of pins – 20 GPIO pins Hardware Serial, hardware I²C, hardware SPI support 7x PWM pins 10x analog inputs Built in 100 mA lipoly charger with charging status indicator LED Pin #13 red LED for general purpose blinking Power/enable pin 4 mounting holes Reset button The Feather 32u4 Radio uses the extra space left over to add an RFM69HCW 868/915 MHz radio module. These radios are not good for transmitting audio or video, but they do work quite well for small data packet transmission when you ned more range than 2.4 GHz (BT, BLE, WiFi, ZigBee) SX1231 based module with SPI interface Packet radio with ready-to-go Arduino libraries Uses the license-free ISM band ('European ISM' @ 868 MHz or 'American ISM' @ 915 MHz) +13 to +20 dBm up to 100 mW Power Output Capability (power output selectable in software) 50 mA (+13 dBm) to 150 mA (+20 dBm) current draw for transmissions Range of approx. 350 meters, depending on obstructions, frequency, antenna and power output Create multipoint networks with individual node addresses Encrypted packet engine with AES-128 Simple wire antenna or spot for uFL connector Comes fully assembled and tested, with a USB bootloader that lets you quickly use it with the Arduino IDE. Headrs are also included so you can solder it in and plug into a solderless breadboard. You will need to cut and solder on a small piece of wire (any solid or stranded core is fine) in order to create your antenna. Lipoly battery and USB cable not included.

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    € 34,95

    Members € 31,46

What is RF? What is RF used for?

Electromagnetic fields, radio waves, microwaves, and wireless signals are called radio frequency (RF) energy. RF currents are electrical currents that oscillate at radio frequencies and have unique characteristics. RF energy is all around us, and RF is used in a variety of electronics and devices, including radio and television broadcasting, cellular telephones, satellite communications, microwave ovens, radars, and industrial heaters and sealers. These are just a few examples.

What is software-defined radio (SDR), and what can you do with SDR?

In general, an electrical signal is generated by hardware components. It is quite complicated to process signals with hardware and has limitations to troubleshoot. With software-defined radio (SDR), RF communication takes place using software, which simplifies the limitations of signal processing with hardware. Instead of having to use mixers, filters, amplifiers, modulators, demodulators, and so on, SDR uses just an ADC and DAC, along with antennas, without the need for many hardware components.

The software for SDR can be used on a personal computer or an embedded system, providing a more flexible application and making it easy to troubleshoot problems. SDR is used in broadcast and amateur radio, radio astronomy, aircraft tracking and GSM network building, and many more applications. It's a good choice for many fun projects.

RTL-SDR is an affordable USB radio used to receive live radio broadcasts from a computer. Due to its popularity, users benefit from a wider variety of radio signals that just a few years ago would have cost hundreds or thousands of euros.

What does Elektor have to offer?

Elektor offers a variety of RF and SDR-related kits, such as the Elektor Raspberry Pi RTL -SDR Kit, which allows you to receive radio signals between 500 kHz and 1.75 GHz from stations using different bands, including MW/SW/LW broadcast, ISM, CB, ham radio, utility, and more. In addition, Elektor supplies its customers with telescopic antennas and magnetically mountable antennas, and much more. Browse our list to find a suitable solution for you.

What does the future hold for SDR?

The popularity of SDR solutions has been increasing since the widespread availability of 4G equipment. The prospects of upcoming technologies such as 5G, the Internet of Things (IoT), and sensor networks promise to further boost SDR . SDRs are built with more powerful FPGAs, and these applications are intended for increasingly complex tasks. As a result, FPGA tools that can manage growing amounts of data and complexity will inevitably gain popularity.

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