[i=s]This post was last edited by jameswangsynnex on 2015-3-3 19:57[/i] :) I recently looked up some smart card readers and learned about several highly integrated card reader ICs from NXP for contact...
Classic lighting routine, download the firmware package SDK_2.2_FRDM-KW41Z, unzip and find the routine SDK_2.2_FRDM-KW41Z\boards\frdmkw41z\driver_examples\gpio\led_outputThere are many supported IDEs,...
I removed a control board with three-digit digital tubes and three buttons from an old money counter. The control chip on the board is TM1628. I plan to transform it into a smart car. The three-digit ...
[If you don't understand, ask] As the title says, in order to prevent jitter interference at the signal input near the threshold voltage, a positive feedback is added to form a hysteresis comparator t...
[i=s]This post was last edited by weepee on 2018-11-7 15:23[/i] The literature says that the 0.1C charge and discharge are drawn separately. 0.1C discharge is easy to say, but charging is divided into...
Habit 1: Diligent in thinking, ashamed to ask questions. Some new employees are willing to think and study some of the problems they encounter after entering the job. This is a good habit, but some pe...
Emergency hand-held lamps powered by 6V maintenance-free batteries are widely used in rural areas. The charger used is a transformer step-down and single diode half-wave rectifier, and the charging...[Details]
Assume that data is read from 8-bit AD (if it is a higher-bit AD, the data type can be defined as int), the subroutine is get_ad();
1. Limited secondary filtering
/* A value can be adjust...[Details]
Floating-point digital signal processing has become a constant requirement for precision technology, often in applications requiring high accuracy in areas such as aviation, industrial machinery, a...[Details]
In this article, the high-performance DSP developed by TI can be used as an effective confidentiality method if it is applied to PC encryption cards.
As an effective network security solution,...[Details]
1 Introduction
Solar street lights are mainly composed of four parts: solar photovoltaic cell components, batteries, charge and discharge controllers, and lighting fixtures. The bo...[Details]
Editor's note: In order to help technicians or engineers who have knowledge of PIC microcontroller assembly language quickly master the method of using C language to program PIC microcontrollers, t...[Details]
Contact resistance
is the resistance to current flow through a closed pair of contacts. This type of measurement is performed on devices such as connectors,
relays
, and switches. The...[Details]
1. Introduction to CIF Board
Fieldbus integration based on PC system
Whether it is a master or a slave, fieldbus has won unanimous praise in the field of PC-based automation. For more...[Details]
1 Introduction to HART Protocol
HART (Highway Addressable Remote Transducer), an open communication protocol for addressable remote sensor high-speed channels, was launched by Rosemen in the U...[Details]
With the advocacy and implementation of the government's Safe City Plan, the security market has increasingly higher requirements for the clarity of surveillance images. Imagine that after a case o...[Details]
Overview
In spectral measurement, photomultiplier tubes (PMT) and charge-coupled devices (CCD) are often used as photoelectric converters. PMT is used in slow-changing, high-precision spectral...[Details]
Problems such as the depletion of natural resources, air pollution, traffic congestion, and rising fossil fuel prices have forced societies and individuals to seek alternative means of transportati...[Details]
Motors, especially those with brushes, generate a lot of noise. This noise must be dealt with if the appliance is to meet the requirements of EMC standards. The means to solve EMC are nothing more ...[Details]
Abstract: With the development and construction of BeiDou II system, China will shift from the situation dominated by GPS to the situation dominated by BeiDou II global navigation system independen...[Details]
0 Introduction
High-precision current source can provide high-precision current supply for precision instruments, and is suitable for automatic measurement tasks of various resistors in semico...[Details]