With all the recent hype over radio frequency identification (RFID) and the requirements to implement it, you might think that RFID can turn water into wine, transform lead into gold, and cure the world’s diseases. You might also be worried that RFID will enable Big Brother to track your move- ments to within a foot of your location from a satellite five hundred miles up in space. The truth is, RFID can do None of these things. In this chapter, you find out the basics of what RFID is, what forces are dri- ving RFID as a replacement for the bar code in the marketplace, and what benefits RFID can offer
标签： ForDummies_RFID_For_Dummies
上传时间： 2020-06-08
上传用户：shancjb
This example shows how you can use signal functions in the Visiondebugger to simulate a signal that is coming into one of the analog inputs of the LPC21xx.The Measure example is described in detail in the Getting StartedUser's Guide.The MEASURE example program is available for several targets:Simulator: uVision Simulator for LPC2129MCB2100: Keil MCB2100 evaluation board with ULINK debugger - Application is loaded to internal Flash. - Switch S2 (INT1) is used as GPIO and sampled (jumper positions: J1= off, J7= on) - potentiometer POT1 is sampled as AIN0 (jumper position: J2= on) - serial port COM1 parameters: 9600 baud, no parity, 8-bits, 1 stop bit, flow control NoneMCB2130: Keil MCB2130 evaluation board with ULINK debugger - Application is loaded to internal Flash. - Switch S2 (INT1) is used as GPIO and sampled (jumper positions: J1= off, J7= on) - potentiometer POT1 is sampled as AIN1 (jumper position: J2= on) - serial port COM1 parameters: 9600 baud, no parity, 8-bits, 1 stop bit, flow control None
标签： dac8568
上传时间： 2022-06-28
上传用户：
本设计为42DRV8825基于stm32 控制， DRV8825 来实现驱动步进电机，正转 ，反转，32细分DRV8825是具有片上1/32 微步进分度器的2.5A 双极步进电机驱动器。该DRV8825驱动器打造color: rgb(5, 163, 94); text-decoration-line: None; font-family: 微软雅黑, 42步进电机驱动板外部有检测口，检测电机是否到位
上传时间： 2022-07-01
上传用户：
基于美信血氧和<a href="https://www.cirmall.com/circuits/tags/3004" "="" style="box-sizing: border-box; background: 0px 0px; color: rgb(5, 163, 94); text-decoration-line: None;">心率检测，以单片机STM32F103CBT6为主控核心，其中涉及电源模块、心率血氧模块、蓝牙模块。电源模块是提供所有系统的供电，心率血氧是整个系统功能的实现，MCU读取心率血氧信号，分析数据，蓝牙模块是实现无线的一种方式，连接外部和单片机。本设计可以通过手机蓝牙连接。测量者可将手指放于被测处，测得的数据可在单片机上直观显示或者是电脑显示。在数据显示的问题上，本设计采用了二种方法，一种是手机蓝牙连接，利用手机蓝牙连接硬件电路的蓝牙模块，通过蓝牙传输数据送往手机显示，第二种是单片机液晶屏显示，被测者可在液晶屏上直接获取自己的血氧脉搏的数据。 最终，被测者可获得自己的心率和血氧值。
上传时间： 2022-07-02
上传用户：kingwide
