₦airaland Forum

The solar charge controller

So I have a 2.8 battery backup by luminous installed by a professional installer. I currently want to upgrade it to also charge with solar but I would like to do it diy. I have been doing a lot of research about it but I will like to peer review my math and numbers so I don’t damage my appliances.

So I have a charge controller rated for 30amp pmw from an earlier time.
It’s connected to a 150 watt solar panel 12 volts.

The current inverter is a 2.8kva inverter with 2 batteries. Which makes a 24v system.

Now I plan to order 2 more panels

1 200watt 12v panel
1 300 watt 24v panel

My plan is to connect the existing 12v 150watt panel to the new 12v 200 watt panel in series to make a 24v

Then connect the 24v in parallel to the 300 watt 24v panel.

This should give an output of around 28amps and 24 v
Which is about 650watt in total

The charge controller has a max of 780 watt for 24v

Is there an issue with this setup or am I making any mistake.
Is there any other device I need?
I know I need a surge protector and a DC breaker but not sure where to get those yet. Please house I need your help.

Hello guys. i need help on how to start exporting commodities from nigeria to the usa. probably a good shipping company that is trusted and tested with fair pricing per lb.

As we enter into another phase in the marvel cinematic franchise one cant help but pick out some characters you love. one of my very much characters is JAVIS. tony starks AI thats helps him in almosts everything. even sleep as we found out in iron man 3. now JAVIS has been uploaded into the vision. now we now av a new AI. FRIDAY. i don't know for you guys but i think I love FRIDAY more.

I have finally gotten it. Its all done. Tanks

I have finally gotten it. Its all done

Hello guys. Am working on this project and i want to implement jquery file upload plugin with codeigniter. using the normal standalone script is working fine for me. but with codeigniter, its been alittle tricky. Any fast help.

Fully explained script.

Build your own vehicle shopping website at very affordable price

New features coming soon. Just watch out!!!

Add customized features to your vehicle shopping website

Hello guys
Today, i give u a chance to own your own vehicle shopping website. Built to suite your every need from easy upload to on the spot SMS and Email alert of new vehicle sale. check out our demo on www.demo.wakkacars.com

Check my website www.wakkacars.com for more info.
Features
Sms alert enabled
Full admin backend portal---www.demo.wakkacars.com/admin
Full responsive design
Send email and sms to customers
And somany more
Phone 08174086809
Email Afotrick2011@gmail.com

Gud day guys. I have a vehicle selling website script for sale. Contact me for the price.i promise its affordable.check out the demo on www.demo.wakkacars.com

. But if u want me to build it for u. Super cool. Check my website www.wakkacars.com for more info.
Features
Sms alert enabled
Full admin backend portal---www.demo.wakkacars.com/admin
Full responsive design
Send email and sms to customers
And somany more
Phone 08174086809
Email Afotrick2011@gmail.com

For those interested in the script. I promise to explain every little snippet u feel need to be explained.

Build Your car shopping store now. Visit www.wakkacars.com
Features
*In built SMS sending platform
*Highly responsive
*Easy admin backend for managing vehicles and so many more
Visit www.demo.wakkacars.com for a demo. Trust me, you will be impressed.

If u are interested, i have a car shopping website for sale. Try the demo if u like it. www.wakkacars.com

satmaniac:
Hi Adesege, I am sorry to bother you with my little troubles, 'cos am back again. I made mistake in my first post about this issue, as I am assessing nairaland using my phone and typing on that phone is not an easy task. I am going to copy the entire codes on my notepad++, as I have try that which you suggested in your reply to my post.
So, here are the codes:




<?php
include 'connect.php';
if (isset($_POST['firstname']) && isset($_POST['name']) && isset($_POST['email']) && isset($_POST['password']) && isset($_POST['confirmpassword']) && isset($_POST['username']) && isset($_POST['sex'])){

$firstname = $_POST['firstname'];
$name = $_POST['name'];
$email = $_POST['email'];
$password = $_POST['password'];
$confirmpassword = $_POST['confirmpassword'];
$username = $_POST['username'];
$sex = $_POST['sex'];

}

if (!empty($firstname) && !empty($name) && !empty($email) && !empty($password) && !empty($confirmpassword) && !empty($username)){

if ($password!=$confirmpassword){
echo 'password do not match';

}else{
$query = "SELECT username FROM user WHERE username ='$username'";
$query_run = mysql_query($query);

if (mysql_num_rows($query_run)==1){

die("The username already exist!";

}else{
$query = "INSERT INTO user VALUES('', '.$firstname.', '.$name.', '.$email.', '.$password.', '.$confirmpassword.', '.$username.', '.$sex.' )";
$query_run = mysql_query($query);
}
if ($query_run){
echo 'You have been successfully registered.';

}else{

echo 'You could not be registered at this time, try again';

}


}
}else{
echo 'All fields are required';
}






?>

<h1>REGISTRATION FORM </h1>

<form action = "register.php" method = "POST">

First Name:<br /><br /><input type = "text" name = "firstname" value = "<?php echo $firstname; ?>"/><br /><br />
Name:<br /><br /><input type = "text" name = "name" value = "<?php echo $name; ?>"/><br /><br />
Email:<br /><br /><input type = "text" name = "email" value = "<?php echo $email; ?>"/><br /><br />
Password:<br /><br /><input type = "password" name = "password" /><br /><br />
Confirm Password:<br /><br /><input type = "password" name = "confirmpassword" /><br /><br />
Username:<br /><br /><input type = "text" name = "username" value = "<?php echo $username; ?>"/><br /><br />
Sex:<br /><br /><input type = "text" name = "sex" value = "<?php echo $sex; ?>" /> <br /><br />
<input type = "submit" value = "Register"/>


</form>

Hello ur script is alittle buggy cause of ur use of single and double quotes. Try this instead

$query = "INSERT INTO user VALUES('', '$firstname', '$name', '$email', '$password', '$confirmpassword', '$username',' $sex')";

The mistake u made is pputting . which means concatenation in php between the sql query will only cause problem if u dont break it will double quote like u statted with. If u started with single quote then wen u concatenate. U end each string with single also.

i see a plot by all this series writers to make all youths lazy and keep the tv or laptop or phones as best pals. And its working. Am first on the list. Cant count the no of series am following.

Cant wait for the walking dead to continue.

Big bang theory sheldon cupa
The last ship captain
The walking dead the little kid with the hat

i dont know about you but i cant wait for the Originals season 3

actually am trying to post facebook buttons on the website. how to is the problem

sorry to say. Nigerians are hypocritic in nature. i dont see any hash tag #6years wasted. yet after six years i see our youths begging for alms jobs, our mothers fighting for little food in the market our fathers paying taxes they dont get any return from. only to be paid into the accounts of some bastards sorry to say. so now a man comes in less dan 100 days, even if he does notin, is trying and we can all see is trying to put us all back on track. yet we want to nail him to the hauge. its a pity anyway.

Hello guys. I am working on a new website that involves sharing the pages links on facebook and twitter. Pls help asap

What if our skin color was determined by what we eat alot, what color would you be?



I would probably be white and black cause i luv rice and beans good
good
morning
nairaland
.

Hello nairaland. I need your help. I want to host a website. I saw qservers on nairaland ads. Wanna ask if anyone has used them before and how reliable their support is. Else any other good hosting service you can recommend .

Pls help me check 56171796JD .Thanks

hello.any one advanced in runge kutta 4th order and c programing? Am just an undergraduate working on it. I need help with this code. It sussessfully solves a system of differential equations using runge kutta 4th order, but my lecturer wants something else. something i dont know how to do. the code originally has the question already in the program, but what am required to do is make the program ask the question like an interface asking the question and parameters to solve. i believe u will understand when i post the code.


‪#‎define‬ X0 1.0
#define Xn 2.0
#define STEPLEN 10
#define Y1 1 //initial condition for y1 at x=0
#define Y2 0 //initial condition for y2 at x=0
‪#‎include‬ <stdio.h>
#include <math.h>
#include <stdlib.h>
double f1(double x,double y1,double y2)
{
//a function to solve the functions 2 using x and y
return(y2);
}
double f2(double x,double y1,double y2)
{
//a function to solve the functions 1 using x and y
return(x*log(x) - (2*y1)/(x*x) + (2*y2)/x);
}
main()
{
double x,y1[STEPLEN],y2[STEPLEN];
double xmid,k1[2],k2[2],k3[2],k4[2],h = (double)(Xn - X0)/STEPLEN;
x = X0;
y1[0]=Y1;
y2[0]=Y2;
int i;
printf("This are the initial values. y1=%.10f y2=%.10f and h=%f\n\n", y1[0], y2[0],h);
//printf("x\t|k1\t|k2\t|k3\t|k4\t|y\n\n";
for(i=0; i<STEPLEN; i++){
k1[0]=h * f1(x,y1[i],y2[i]);
k1[1]=h * f2(x,y1[i],y2[i]);
xmid = x + h/2.0;
k2[0] = h * f1(xmid, y1[i] + k1[0] * 1/2.0, y2[i] + k1[1] * 1/2.0);
k2[1] = h * f2(xmid, y1[i] + k1[0] * 1/2.0, y2[i] + k1[1] * 1/2.0);
k3[0] = h * f1(xmid, y1[i] + k2[0] * 1/2.0, y2[i] + k2[1] * 1/2.0);
k3[1] = h * f2(xmid, y1[i] + k2[0] * 1/2.0, y2[i] + k2[1] * 1/2.0);

k4[0] = h * f1(x + h, y1[i] + k3[0] , y2[i] + k3[1]);
k4[1] = h * f2(x + h, y1[i] + k3[0] , y2[i] + k3[1]);

y1[i+1] = y1[i] + (k1[0] + 2*k2[0] + 2*k3[0] + k4[0])/6;

y2[i+1] = y2[i] + (k1[1] + 2*k2[1] + 2*k3[1] + k4[1])/6;

printf("When x=%f\n",x+h);
printf("k1 for y1=%.10f\n",k1[0]);
printf("k1 for y2=%.10f\n",k1[1]);
printf("k2 for y1=%.10f\n",k2[0]);
printf("k2 for y2=%.10f\n",k2[1]);
printf("k3 for y1=%.10f\n",k3[0]);
printf("k3 for y2=%.10f\n",k3[1]);
printf("k4 for y1=%.10f\n",k4[0]);
printf("k4 for y2=%.10f\n",k4[1]);
printf("y1 when x is %f=\t%.10f\n",x+h,y1[i+1]);
printf("y2 when x is %f=\t%.10f\n\n",x+h,y2[i+1]);
// printf("%f %f %f %f %f %f %f %f %f %f \n",k1[0],k1[1],k2[0],k2[1],k3[0],k3[1],k4[0],k4[1],y1[i+1],y2[i+1]);
x = x+h;

}
system("pause";
}
please if u dont mind contact me by email @ afotrick2011@gmail.com Please. your help will be very much apprciated.

Dlastofmykind: @sisqology.... I was unable to send invitations to all those emails due to bitbucket probs but I've attached those files to your email address.
It's in a zip format and the email that I used is dlastofmykind@gmail.com

THANKS!

its just for knowing my capacity.

@op. the opportunity is past me now cause i saw the post just today. but can i still do it and submit and u rate it according to your standards.