l motor lego

Article excerpt from: http://bbs.eeworld.com.cn/thread-370591-1-1.htmlI. Structure and driving principle of hybrid stepping motorThe principle of the motor this part does not want to talk about too complicated, open a motor to see the understanding.The rotor of the motor is a permanent magnet, and it has several poles on it, which are fixed at a certain angle. Th

Key Control Motor display speed, key motor speed Program flowchart Code # Include # Define uchar unsigned charSbit dula = P2 ^ 6;Sbit wela = P2 ^ 7;Sbit jia_key = P3 ^ 6;Sbit jian_key = P3 ^ 7;Sbit zf_key = P3 ^ 5;Bit flag = 0;Uchar num = 0, show_num = 2, maichong = 4, table_begin = 0;Uchar code table1 [] = {0x01,0x02,0x04,0x08,0x08,0x04,0x02,0x01 };Uchar code table [] = {0x3f, 0x06, 0x5b, 0x4f, 0x66,

Principle of stepper motor According to common sense, the wiring of stepper motor depends on the color of the wire. However, the color of the stepping motor produced by different companies is different. Especially foreign stepper motors. Then, the stepper motor wiring should be made with a multimeter. The internal str

Note that ports 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12 are occupied (PIN ports on the Board ). Through ms_dcmotor motor (4); 4 refers to the No. 4 motor, and there is also the No. 1-3 motor. Not pin Port The steering gear uses ports 9 and 10 and can be directly controlled through the program. In addition, in Arduino ide 1.0 and later versions, wprogram. H has bee

1. Import the third-party library into the project2. #import "EGORefreshTableHeaderView.h"3. Interfaces that need to be refreshed comply with the protocol4.//created on top of TableView-(void) creategoheardview{_heardview = [[Egorefreshtableheaderview alloc] Initwithframe:cgrectmake (0,-self.tableview.bounds.size.height, Self.tableView.bounds.size.width, Self.tableView.bounds.size.height)];Set up Proxy_heardview.delegate = self;Set the last Refresh time[_heardview Refreshlastupdateddate];[Self.t

work, will be relatively easy to think of other places (such as fantasy), so, led to a lot of daily events and energy to take study and work, but still did not achieve the desired results.③: The foundation is insufficient, starts from the contact computer, is from the actual project development, so the study thing is very quickly, but also exposes a very serious question----Foundation is not solid.A pertinent self-summary, can let oneself more understanding of advantages and disadvantages, in t

after a half semester of study, I realized that I still have a lot of shortcomings, the foundation is not solid enough, learning attitude is not particularly serious, resulting in I am very dissatisfied with the results. So, I'm going to change it, taking advantage of the winter vacation time, check the gaps, try to put in a freshman semester, and then in the big semester, serious efforts, solid, hard study, to get rid of bad habits. For the object-oriented course, is not very understanding, acc

, probably this.2. Expectations of the ability to learn after the completion of an object-oriented course: I can say that the object-oriented course is not understood (originally chosen this major is because the computer knowledge of this area too little, want to learn), so can learn what ability is not very clear, it is C + + well, I just want to be able to do something practical, not just solve the problem on the machine.3. Expectations for object-oriented courses: I just hope that we do not t

After a semester of study, also began to understand what is programming, from the beginning Mengmengdongdong even find information do not know how to find now at least can also knock out their own slightly satisfied with the code. Maybe a lot of people are saying the code is difficult, the problem is difficult, but I think if you spend enough time to learn, to think, then those so-called problems can be solved. A semester to learn C, feel is not learning very deep, winter vacation learning C + +

Vaguely remember Shingzhi president said the sentence: "The university is not the end of your life, but the beginning of your life." However, I was not at that time, perhaps the rumors of others, perhaps their own relaxation. I spent my freshman life in such a muddle. Although there is no goal in the freshman, but fortunately, under the influence of the roommate, or more or less learned something, so now in retrospect, will not be a freshman in my study career too much regret. From the beginning

The university's progress bar has been silently pulled to 1/8 when we never found out.In this 1/8 of college time, I followed the class C language, after-school self-study a bit of HTML and Java, a total of 68.5 programs, can now use Eclipse, Dev C + +, EditPlus and other integrated development environment to write code.In the course of learning I found some problems, first of all, my initial goal is to contact all kinds of languages, to find their own interest direction, but there is a suspicio

The code to clean up the cache is as follows:Dispatch_async(Dispatch_get_global_queue (Dispatch_queue_priority_default,0), ^{ nsstring *cachpath = [nssearchpathfordirectoriesindomains(nscachesd Irectory,nsuserdomainmask,YES)objectatindex:0];nsarray *files = [[nsfilemanager defaultmanager] subpathsatpath: Cachpath];NSLog (@ "files:%d", [Files count]); for (nsstring *p in Files) {nserror *error;nsstring *path = [Cachpathstringbyappendingpathcomponent:p];if ([[[Nsfilemanagerdefaultmanager]fileex

AutoSearch"," digital or amount format thousand bits ","Ajax request rewrite, anti-repetition click ","loading loading animation effect "," Tip ComponentTip, analog dropdown box select, andiframe upload component upload, in addition to validation, this basically covers the front-end development components of the PC 70% Above.Today, Tanabata Festival, I have not bought a gift, I put these components dedicated to so did not receive the gift of you!Blog Park My other blog: http://www.cnblogs.com/

is no way to see the topic at all. will only understand some very simple code, a bit more complex code I can not read ... I think I did not seriously study this course, winter vacation time also to self-study. I would be more nervous about learning C + + in the semester. All in all, the knowledge of the C language you learn is very, very little, and I know it's just a fur thing. The foundation is simply not playing well.3, the expectations of the object-oriented curriculum, programming and prof

A summary of the freshman:This semester to understand the C language, the change programming also have a certain understanding. Mastered some of the ability to program, but only a few simple procedures, write a problem for a long time, need to change repeatedly. And it is difficult to solve the problem completely independently.The goal of a big semester:I will use the time of winter vacation to practise C language and make myself more proficient. I will also work hard to learn C + +, mastering t

at the books, not to review, is a preview it, anyway is very strenuous just. and C language Work progress is very slow, sometimes a question to do 2 hours or so do not come out, but also to constantly ask seniors, which makes me very confused, and powerless.I hope that in the semester I can take interest in the new curriculum, to cheer up, on the road of learning, to the pinnacle of study, I will pay more attention to this course, 100,000 points of energy to complete it, hoping to find in the b

A piece of code to clean up the cache such as the following:Dispatch_async(Dispatch_get_global_queue (Dispatch_queue_priority_default,0), ^{ nsstring *cachpath = [nssearchpathfordirectoriesindomains(nscachesd Irectory,nsuserdomainmask,YES)objectatindex:0];nsarray *files = [[nsfilemanager defaultmanager] subpathsatpath: Cachpath];NSLog (@ "files:%d", [Files count]); for (nsstring *p in Files) {nserror *error;nsstring *path = [Cachpathstringbyappendingpathcomponent:p];if ([[[Nsfilemanagerdefaul

From: http://www.chinakong.com/forum/disp.asp? Id = 41310 Basic Principle of stepper motor 1. stepper motor is an open-loop control component that converts an electrical pulse signal into an angle displacement or linear displacement. In the case of non-overload, the speed and stop position of the motor only depend on the frequency and number of pulses of the pu

From: http://www.eepw.com.cn/article/73889.htm Stepper motor is an electromechanical component that converts an electrical pulse signal into an angle displacement or linear displacement. The input value of the stepper motor is a pulse sequence, and the output value is the corresponding incremental displacement or step motion. Under normal motion, it has a fixed number of steps each week. When performing Con

Let's talk about these patterns in a nutshell. (1) Bipolar mode, that is, the armature voltage polarity is positive or negative alternating, Advantages: Can forward and reverse operation, start fast, high speed precision, dynamic performance, speed adjustment, small, speed range, can accelerate, deceleration, braking, reversing, in the load over the set speed, to provide reverse torque, can overcome the static friction motor bearings, resulting in ver