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Description。This is the Logitech C270 Webcam. With a sleek compact look and a black finish， this is not just for looks. This economical choice provides a 720p/30FPS HD resolution in a 16：9 widescreen format. The Logitech C270 webcam is compatible with most major messaging applications like Skype， Windows Live Messenger， Yahoo Messenger and more， giving you a wide selection of use.。Fluid Crystal technology provides smoother videos， sharper pictures， richer colors and clearer sound in real-world conditions. With the automatic light correction， even if you make a video call in dim or poorly backlit settings， the camera will intuitively adjust to produce the best possible image.。The built-in noise-reducing mic makes sure your voice comes across clearly， even if you're in busy surroundings. This flexible webcam comes with a universal clip for mounting so you can either attach it securely to your screen or sit it on a shelf.。Features。USB port。Max Resolution - 720p/30fps。16：9 Widescreen。Photo Resolution - 3MP。Focus Type - Fixed focus 40cm and beyond。Lens Type - Plastic。Auto Light Correction。Built-in mic with noise cancellation - mono。Field of View 60°

Description。The SparkFun Raspberry Pi 4 Desktop Kit includes everything you need to turn any monitor with an HDMI port into a desktop PC. If you're looking to create a PC or Media Center with the Raspberry Pi 4(4GB version)， this is the kit for you. All the components were chosen and tested to create the highest quality， least frustrating experience that allows the Pi to work to its full potential.。A 64GB memory card card provides capacity and top of the line read/write speeds needed to run most operating systems for the Raspberry Pi platform smoothly. The included card brings updates to the Raspian image 10x faster when compared to our previous card! This card also passes the Raspberry Pi SD Card Speed Test and comes blank with no distribution allowing you to choose from a multitude of operating systems or projects that are built specifically for the Pi. The USB Type C wall adapter and Type C to Type C USB cable provide a modular power system for the Raspberry Pi 4. The heat sink case provides protection for the Raspberry Pi board but also cools the major components allowing it to run smoothly during heavy usage. The Logitech K400 Plus wireless keyboard provides a plug and play HID solution for the system. The included an HDMI to Micro HDMI cable can interface to any HDMI monitor. Finally， we added our Qwiic Shim， which allows you to easily attach any of our Qwiic Boards for testing.。NOTE：The Qwiic Shim is not intended to be used with the Heatsink case， as it prevents the case from properly connecting with the processor. The top of the case needs to be off should you use the Shim or utilize an extension header in conjunction with a Pi Hat.。The SparkFun Qwiic connect system is an ecosystem of I2C sensors， actuators， shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch， 4-pin JST connector. This reduces the amount of required PCB space， and polarized connections mean you can't hook it up wrong.。Get Started with the Raspberry Pi 4 Guide

Description。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 434MHz 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， we 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：a 915MHz version and this 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"×1.1"