it is usb based power switch controlled via usb based on avr microcontroller

基于ATmega16的12864液晶显示源代码，包含汉字和图像的显示-ATmega16 based on the 12864 LCD source code contains characters and image display

1）LPC2148开发。开发板是由NEX机器人。链接：http://www.nex-robotics.com/lpc2148-development-board/lpc2148-development-board.html  2）GPS模块：联发科MT3318芯片组的模块链接：  http://www.nex-robotics.com/products/gps-receiver/gps-receiver-mt3318-module.html  3）加速度：MMA8451Q（3轴+/-8克I2C基于加速度传感器飞思卡尔）链接：  http://www.nex-robotics.com/products/sensors/3-axis-digital-accelerometer-with-voltage-regulator.html  4）GSM调制解调器：SIMCOM SIM900a链接：  http://www.rhydolabz.com/index.php?main_page=product_info&products_id=1079

应用背景The CMX990 provides, on-chip: a flexible, formattable GMSK packet and freeformat modem, a dual synthesiser fed from an external source, IF and RF transceiver stages for both Rx and Tx modes, and auxiliary ADCs and DACs for system control and monitoring.关键技术Operating in the range of 400MHz to 1GHz at data rates of 4 to 16 kbps. This single-chip, half-duplex device requires a minimum of external components, keeping end-product board size, power consumption and cost to an absolute minimum. The versatile GMSK modem is configured for either packet and freeformat data operation via an efficient task-oriented Rx and Tx format and command structure combined with data scrambling, interleaving and FEC and CRC capabilities. Rx data acquisition, extraction and tracking functions use Rx data-quality feedback to support varying signal environments. IF and RF functions in the Tx path handle all the signal processing requi

只要对程序稍做修改，适用于其他F系列的芯片--Only after a little modification, it could be used for other F series chips.

EEPROM driver for SPI EEPROMs. Bitbanged on MSP430 processor. Written in Quadravox compiler.

这个源码是2014年电子设计大赛湖北赛区的B题，金属探测器。包括金属探测器的驱动，还有金属探测器的扫描方式，以及确定圆心的算法。当时我们用的是皮带传动，x，y轴扫描方式，效果非常好，就是100%中圆心，不管是硬币还是铁环。

PCI中断分析.讲述PCI中断原理-Analysis of PCI interrupt. About PCI interrupt Principle

一个嵌入式的C++库，目前正在处于开发中，该版本是最新版-an embedded C library is currently under development, which is the latest version Version

基于MCF5307的NuCleus源码，比较难找的-MCF5307 Source Based on the Nucleus, more difficult to find the

勤研电子QT2440-V2开发板原理图-Diligence Electronic Research QT2440-V2 development board schematics