C# :: How To Manually Control The Temperature Of High Power Leds Using PID Controller
Mar 20, 2015
how to manually control the temperature of High Power Leds using PID controller. I have two GUIs,one reads the temperature from the Led while the second is used to ON/OFF the Leds and at the same time controls the Led brightness using slider control.The GUI that reads the temperature has a PID controller application on it.The output from this controller is what i want to use to increase or decrease the Led brightness which invariable changes the Led temperature.How to go about using this PID controller to control the Led brightness is what i have not been able to grasp well.The slider on the GUI is scaled from 0% to 100%.My thinking is that the output from the controller should be in percentage which will make me to adjust the slider accordingly.My question is that will this type of arrangment produce an output that will efficiently control the Led brightness. how to accomplish that. Attached to this post is a modified code of a tutorial on PID controller which i found on the net. a tutorial on how to develop a graph. i wish to display the Setpoint,Process value and the output value on a graph.
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Jan 16, 2013
I have to write a program for a restaurant and their food has to be cooked on a hot sheet of metal and too cook their burgers properly I must keep a maintain temp of 400 F, for the grill and to measure the temperature using a probe at 12 points, there are 3 elements with 3 points on them
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Jan 26, 2015
about putting manually a path in my code.
This is what my code should looks like
#include <iostream>
#include <fstream>
#include <vector>
[Code]....
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May 13, 2013
I'm trying to learn how to assign bit widths manually to numbers. Here's my code below:
Code:
#include <stdio.h>
struct node {
unsigned long x : 53;
[Code].....
And I get the following complaint from the -Wall compilation flag, " warning: format '%lu' expects argument of type 'long unsigned int', but argument 2 has type 'long unsigned int:53' " which is talking about anna.z, to be specific.
How do I add field width to printf?
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May 25, 2012
I want to display a bmp file of resolution 600*420 (using c compiler like code block ) by manual loading. I tried to display the image by loading the pixel value. but this method has a limitation that it take up pixel value of image upto 64kb size.
So now i am trying to load it manually. What are the steps that i has to follow, what are the header files that i has to use ?
My system specification are windows xp professional , intel pentium 4 cpu. I don't know where to start ,does this method has any limitaton ,...etc ........
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Mar 18, 2013
I'm a C beginner. I have questions, let say if I have a structure of message containing of Id, Length, and 3 bytes of data, and I want to manually saved in individual bits of data, how can I do that? I confused on how to use typedef struct and union. Below is the sample code:
typedef struct {
uint8_t Id;
uint8_t Length;
uint8_t DataField[3];
}AA;
[Code] .....
By the way, the DataField is declared as above. It's not necessary for a data to be 24 bits. It can be bit 0 - bit 8, it can be bit 10 - bit 15 and so on. So, for each case, I want to ignore the other bits.
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Jan 3, 2015
I'm familiar with the concept of int in the for loop. However, I've seen a case where the condition for the for loop is a pointer. How is the pointer used or interpreted in the for loop condition in C or C++.
As an example:
Code:
void printer(char *fmt, ...) {
va_list args;
char *p, *sval;
int ival;
double dval;
va_start(args, fmt);
for(p = fmt; *p; p++) {
if(*p != '%') {
putchar(*p);
continue;
[Code]....
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Jul 2, 2014
I have a C-Power5200 driver. I want using the C# language change to the controller's IP address.
Here a link to the website and API.C-POWER 5200
In Annex API controller.
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May 24, 2014
I have researched quite extensively, experimented, and still cannot seem to change the properties of a control on an active winform from a user control.
So I have a user control which populates each dynamically added tab page in a tab control.
I have a textbox in the user control which I would like to type in, capture the text_change event, and change the text of the label in the winform.
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Apr 25, 2014
How do I bind a DATE column in a DataGridView Control to a DatePicker control (using C#)? I already have the DataGridView control bound to a database stored procedure which takes a DATE value as a parameter and selects joining table based on the results.
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Jul 11, 2014
Using the C # programming language LED controller through which controls the array is connected to the controller via the RJ45 port. I already know the basics, I mean specifics, ie
Using the instructions and DLL included with the hardware, I want to read data from it, but I can not deal with it.
Model controller is "C-Power5200" and dll is "CP5200.dll".
I would like to:-pick the data-display-edit and - save in the controller.
To read the data I am using the function
CP5200_Net_Read (BYTE * pBuf, int nSize);
and to save
CP5200_Net_Write (const BYTE * pBuf, int nLength);
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Nov 13, 2013
Main is supposed to be sending values to the power function.Write a prototype and function for calculating powers of numbers.This version should have an integer return type and take two integer inputs, for the base and the exponent. It should do the following:
• handle negative bases
• return an error on negative exponents (we’re not doing those yet)
• handle zero exponents
Call your function from a nested loop in main(), which calls the function using every combination of negative, zero and positive numbers for both base and exponent. This will test your function without the user having to input all the data.Any code which calls the library pow() function will lose half of the assignment points.
#include <iostream>
using namespace std;
int power (int, int);
int main() {
int size = 10;
int test[size];
int base;
[code].....
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Oct 30, 2013
I am trying to do a compute and output a power set program. The numbers will be input through a file. How to do a power set. Here is my code :
#include <iostream>
#include <fstream>
#include <string>
#include <ostream>
using namespace std;
int main () {
string array[21]; // creates array to hold names
[Code] .....
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Dec 29, 2013
I am trying to have a program that I am writing detect a controller and then say whether there is or is not one connected. But I am getting a lot of errors(25 actually) . Here is my code:
Code:
#include <stdio.h>
#include <Xinput.h>
#include <stdbool.h>
#include <Windows.h>
void main()
[Code] ....
puts("Error no controller was found on any port");
return 0;
}
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Jul 14, 2014
I know how to create your basic programm that compiles as a CLI or exports and/or saves data to a .txt file... But how does one build a GUI?
I ask because I am currently working on a programm for my Arduino controlled robot, in which I want to have a virtual on screen controller next to a map of my bots path.
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Sep 19, 2014
This project is for an embedded micro controller. In the project i wrote a class that generically services uarts. then i declare 6 objects of that class and hand them configurations for each specific uart.
internally all the objects have a send buffer of data that is still to be sent that gets populated by the object member function.
how can i make an array of function pointers that can point to the same member but of six different objects.
for example (not a working one)
class uart {
private:
struct myData {
unsigned char data[20]
int head
int tail
int count;
[Code] ....
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Sep 29, 2012
I was trying to write a character controller but when I went to add my pointer to my character I get error
C2143: syntax error : missing ';' before '*'
I've looked at all my classes involved but I don't see any errors and Visual Studio doesn't report any other specific errors. Is there any way of finding the source of this type of error?
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Apr 9, 2013
I am trying to create a recursive function that i can call on in order to take a user inputed base and exponent and give final answer this is what i have but im completely lost after this i dont even know how to continue. What i have so far
#include <iostream>
using namespace std;
int Exp(int x,int y){
if(base <= 1 || exp == 0) return 1;
if(exp == 1) return base;
int main(){
int number, exp;
[Code] .....
After i set the base situations im not sure how to get the function to make the function take the base to the exponent recursively.
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May 7, 2013
I did a function for lagrange interpolation formula. However i`m stuck on how do i substitute values into the power. Here is my code snippet :
for(int i=1;i<getSecretShare+1;i++) {
//calculateValue=getSecret+(10*p)+(2 * pow(p,2));
int storeThreshold=getThreshold;
calculateValue=getSecret+(10*i)+(2 * pow(i,2));
calculateFinalValue=calculateValue % 17 ;
cout<<"the calculated value is "<<calculateFinalValue<<endl;
}
The formula that i want to implement is that a + a1x^1 + a2x^2 + a(t-1) ^t-1
I have gotten the substitution of the x value out. However, i am stuck on how do i calculate the values according to the threshold which the user keys in. For example if the user keys in 3.
It will into account the no. of shares to generate which is for example 5 in this case, then it will then take into account the threshold keyed in , which is 3, i will then calculate using the formula using the no. of shares and also threshold.
if the threshold is 3 and the number of shares to generate is 5. I should have the following:
y(1) = 13 + a1(1)^1 +a2(1)^2
y(2) = 13 + a2(2)^1 +a2(2)^2
the power depends on the threshold which is t-1, 3-1 =2
So I will have to generate two a values based on that and also calculate them according to the power that is dependent on the threshold the first value being to the power of 1 and the 2nd being to the power of 2 if the threshold is 4.
Then I will generate 3 a values and then calculate them :
y(1) = 13 + a1(1)^1 + a2(1)^1 + a3(1)^3
and so on..
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Aug 10, 2013
I am writing a program to map keyboard and mouse to an xbox 360 controller with win32 and xinput. I have everything going fine but when im trying to control the mouse with the thumbsticks I get problems with the movement if my program has the focus it moves fine but when I put another window in focus the movement is over sensitive here is the code I am using
Code:
if(_controllerState.Gamepad.sThumbRX >= XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE) {
GetCursorPos(&mousepos);
profile->Buttons[6]->input.type = INPUT_MOUSE;
[Code] .....
I have tried everything to fix it.
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Feb 5, 2015
I am using Windows 7 32bit OS and want to detect the CPU power button press event in my console application developing in C language.
I configured the power button setting to "Do Nothing" which is in "Choose what the power button does" options in Control Panel->Hardware and Sound->Power Options. So now i want to detect this power button press event and do some processing in my application then i will initate shut down from application itself. Looking for windows API details which will detect the power button press event.
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Jun 19, 2014
How you can make a c++ program that checks to see if the user presses the power button on their computer? And if so, how?
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Apr 9, 2013
I need an equation that determines the lowest possible cost for laying power line.
The variables are as follows:
1. The width of a river
2. The distance a factory is downstream from a station on the other side of the river.
3. The cost for laying line underwater.
4. The cost for laying line on land.
All these variables will be user input each use of program.
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Nov 27, 2014
I have a program I want to write that determines the health of a power transformer. I know the syntax of all the other code I might have to use but I'm not too sure of how to make it fit into a graphic interface like you see in any other windows program.
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Mar 28, 2015
I've made a game and a dialogbox to show up asking to enter a nickname.
The problem is After entering the nickname, it won't show on the highscore list below (textbox)
Where can the problem be? Below is my code:
private void btnPlay_Click(object sender, EventArgs e) {
if (txtName.Text != "") {
Settings.Name = txtName.Text.ToString();
[Code] .....
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Feb 24, 2013
given matrix A find shortest path between vertices using matrix power multiplications untill u get nonzero values,use adjacency matrix
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