Embedded systems

Embedded systems and single board computer products

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Featured products

  Uzebox AVCore Development Module
The AVCore is an AVR based, 40-pin DIP, computing module. Onboard is an ATMega644 microcontroller, an Analog Devices AD723 NTSC video encoder, a micro SD card socket, and support circuitry. When combined with the open-source Uzebox kernel, the AVCore can produce full color, NTSC compatible video and audio. The AVCore requires only a 5VDC power input and a connection to a TV or monitor to produce color graphics, text, and multi-voice sound and music. So what do you do with all this power? Check out the SparkFun ESD Attack game! The Uzebox was designed as a simple and low cost game console to help people create their own games. The AVCore's default firmware is programmed in C (using the free AVRWin/GCC tools along with AVR Studio under Windows, or command line utilities under Linux). All audio and video generation is automatically taken care of under interrupt control-- user programs do not need to be concerned with the low-level operation of the system. The AVCore module outputs a composite video signal in addition to s-video (luma/chroma) and analog RGB with separate negative going composite sync outputs. Audio is provided as a line level output. Twenty-one general purpose I/O lines from the ATMega644 are available on the package including SPI, serial (TxD/RxD), INT0, ADCs, and others. The ATMega644 is overclocked to 28.636MHz to provide a significant amount of processing power at a rate compatible with NTSC television signals. Components are mounted on the bottom side of the module to help prevent damage. The Uzebox kernel is capable of producing NTSC compatible video in resolutions up to 240x224 pixels with 256 colors. Sprites, horizontal and vertical scrolling, split screen regions, animation and other effects are all accomplished in software. A four channel wavetable synthesizer is included as well as a PCM audio sample playback mechanism. All audio voices are individually pitch and timbre controllable and mixed with adjustable volume levels in realtime. Simply plug the AVCore into the Uzebox Baseboard and you have the official Uzebox development platform; 100% compatible with the Uzebox specification. Plug the AVCore in to your own design to add high quality audio, video, and micro SD storage to your own project. Note: You must use a regulated 5VDC input for power. Features: ATMega644 Microcontroller 4K of RAM 64K Program Memory 28.61818 MHz overclocked 256 colors with a 3:3:2 color space (RGB) Up to 240x224 resolution 32 simultaneous 6x8 pixels sprites NTSC video out, S-Video, and RGB 4 Channel sound wavetable, 8-bit mono 5VDC power at about 100mA (generating audio and video) micoSD card socket 21 pinouts, see schematic
  NFC shield 2.0 (RFID)
NFC Shield is a Near Field Communication interface for Arduino build around the popular NXP PN532 integrated circuit. NFC is a short-distance radio technology that enables communication between devices that are held close together. NFC traces its roots in RFID technology and is an open platform technology standardized in ECMA-340 and ISO/IEC 18092. NFC technology is regulated by Near Field Communication Forum which standardizes NFC communication between devices -- how they pair, share data and allow a secure transaction to happen.NFC Forum develops and certifies device compliance with NFC standards . NFC operate on ISM band of 13.56 MHz Frequency. NFC communication range is up to 10 cm. But, this is limited by the antenna and power radiation design. Most devices work within a range of 10mm. NFC Shield antenna is designed to work within a range of 1cm. NFC Shield provides all necessary circuitry for PN532 like 27.12Mhz crystal, power supply. It also beaks-out the I/O pins of PN532 for easy access. The communication between Arduino and NFC Shield is via SPI. Features Arduino Shield compatible. No soldering required. SPI interface. Hence, most Arduino pins are available for other applications. Built in PCB Antenna. Supports both 3.3V and 5V operation using TI's TXB0104 level translator. Socket to connect other shields.