Wixel은 텍사스 인스트루먼트사의 CC2511F32 마이크로 컨트롤러를 탑재한 프로그래밍이 가능한 USB 모듈입니다.
양방향 무선 통신(2.4GHz) 모듈과 32KB 플래시 메모리, 4KB의 RAM, 그리고 USB인터페이스를 이용하여 마치 Arduino+Bluetooth의 기능을 누리실 수 있습니다.
또한, Wixel을 이용하여 무선 시리얼 모듈로도 사용이 가능합니다.
다음은, Wixel과 아두이노를 이용하여 로봇을 무선 컨트롤하는 비디오입니다.
The Pololu Wixel is a general-purpose programmable module featuring a 2.4 GHz radio and USB. The Wixel is based on the CC2511F32 microcontroller from Texas Instruments, which has an integrated radio transceiver, 32 KB of flash memory, 4 KB of RAM, and a full-speed USB interface. A total of 15 general-purpose I/O lines are available, including 6 analog inputs, and the 0.1" pin spacing makes the Wixel easy to use with breadboards and perfboards. These features give you three main ways to use this general-purpose module:
Directly connect the Wixel to a PC to create a wireless USB dongle.
Add USB connectivity to your project via the Wixel.
Add wireless capabilities to a remote, self-powered device.
A single Wixel can be used as a computer-interface device, such as a USB-to-serial adapter, and it can even serve as the main controller for your system. Connecting the Wixel to a computer requires a USB A to Mini-B cable or a USB A to Mini-B adapter (not included). Two or more modules are required to take advantage of the Wixel’s wireless capabilities. To help you get started with wireless communication, we offer a combination deal that includes two Wixels and a USB A to mini-B cable.
The Wixel features a built-in USB bootloader that can be used in conjunction with our free Wixel Configuration Utility software to upload custom programs or precompiled, open-source apps to the Wixel (no external programmer is required). Our growing selection of free apps lets you turn the Wixel into whatever you need for your current project. No programming experience or compiler software is required to use these apps: simply download a different app to reuse the Wixel in your next project! We plan to release additional apps in the future for wireless AVR programming, wireless sensing, wireless motor driver interfaces, and more. Read more about the available apps…
Advanced users can modify apps to suit the needs of their specific projects, and the apps serve as examples for programming the CC2511. The Pololu Wixel SDK Repository on GitHub is the central location for obtaining source code and sharing modifications with the community.
Warning about radio regulations: The Wixel has not been tested or certified for conformance with any radio regulations, and the Wixel is shipped with only a bootloader that does not use the radio. The 2.4 GHz band is relatively unrestricted in many parts of the world, but it is your responsibility to comply with your local regulations if you program your Wixel to use its wireless capabilities. More information…
The Wixel as a Wireless Serial Port
Wireless PC control of a 3pi robot using a pair of Wixels.
Our Wireless Serial App turns a single Wixel into a USB-to-serial adapter and a pair of Wixels into a wireless USB/TTL serial link for communication between two microcontrollers (like an XBee link) or between a PC and a microcontroller. Among many other things, you can use this versatile app to enable communication between two robots or to remotely monitor or control a robot from a computer. A special version of this app is designed for use with our Wixel shield for Arduino, which makes it easy to add wireless capabilities (including wireless programmability) to an Arduino or Arduino clone.
Using an RF bit rate of 350 kbps, the serial app is capable of transmitting or receiving up to 10 KB of data per second and can reach a range of approximately 50 feet (under typical conditions indoors), and multiple serial links can be used simultaneously on different channels.
Wixel Pinout and Peripherals
2.4 GHz Radio with 256 available channels that can be configured dynamically
Programmable through USB bootloader (no external programmer required)
Pre-compiled, open-source apps available
Wixel SDK for developing your own applications in C using open source tools and libraries
0.1" pin spacing (compatible with standard breadboards and 0.1" perfboards)
3 indicator LEDs
15 user I/O lines, featuring 6 analog inputs, 2 USARTs (for serial or SPI), and 7 timer channels (capable of PWM)
4 KB of RAM and 29 KB of application program memory (flash)
Operating current: up to approximately 30 mA (can get down to ~100 μA when in sleep mode)
Frequency: 2400 – 2483.5 MHz
Range: approximately 50 feet (under typical conditions indoors)
Bit rate: programmable, up to 350 kbps
Effective data rate: up to 10 KB/s
Size: 0.7" × 1.5"
Weight without header pins installed: 3.2 g
The Wixel is available in two versions:
The fully-assembled version ships with its header pins soldered in, so it is ready to be connected to your project with no soldering required.
The partial kit version ships with everything installed except the header pins. A 25×1 straight 0.1" male header strip is included as shown in the right picture below. This version is ideal for compact installations and allows flexibility in choice of connectors.