Beschreibung
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:
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
Main Features:
- Full-speed USB
- 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)
- Comprehensive user?s guide
- Operating current: up to approximately 30 mA (can get down to ~100 ?A when in sleep mode)
- Radio
- 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
Dimensions:
- Size: 0.7" x 1.5"
- Weight: 3.2 g1
Specifications:
- Processor: CC2511F32 @ 24 MHz
- RAM size: 4096 bytes
- Program memory size: 29 Kbytes
- User I/O lines: 15
- Minimum operating voltage: 2.7 V2
- Maximum operating voltage: 6.5 V
- Reverse voltage protection?: Y
- External programmer required?: N
- Partial kit?: Y
Notes:
- 1.Without header pins installed.
- 2.Can operate down to 2.0 V if power is applied directly to the 3V3 pin, but in this case USB can not be plugged in at the same time.
Documents:
- Pololu Wixel User's Guide
- Wixel Windows Drivers and Software (release 121129)
- Wixel Development Bundle for Windows (version 120127)
- Wixel Linux Software (release 110623) for i386
- Wixel Linux Software (release 110623) for amd64
- Wixel Pinout and Peripherals
- Wixel Schematic Diagram
- Wixel EAGLE Library
- Pololu Wixel guia de usuario
- Wixel SDK Documentation
- Pololu Wixel SDK Repository on GitHub
- CC2511F32 datasheet and technical documents
- SDCC ? Small Device C Compiler
- Notepad++
- Instructable: Introducing the Wixel USB Wireless Module
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