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Mobile Network – An error message 21 is displayed when attempting to send an SMS message to Speed ​​Dial 567676 with Airtel SIM and Lenovo K5 note phone

With Active Pack on Airtel you will receive a daily free SMS to a 10-digit mobile number. However, the package does not cover the speed dial of SMS. Shortcut SMS costs 3 rupees per message. So make sure you have enough credit by dialing * 121 * 2 #, then typing 1 and sending. If the balance is less than 3 rubles, sending an SMS to the short code will fail and the error code will be 21. Below is an example of issuing the account balance check. If the account balance is less than 3 rubles, top up 10 rubles to get the talk time (account balance) of 7.47 rubies. Now try to resend the SMS and it should succeed. You'll also see a 3 Ruby pop-up that has been debited from your account.

Bal: Rs0.53

Unlimited calls, daily 1.4 GB & 100 SMS

Pack Valid until: 02-09-2019

1434 MB left of the daily limit of 2048 MB

Network – slow upload speed on a computer running Ubuntu Server 18.04

I'm currently running Ubuntu Server 18.04 on a home server, which will act as a Plex server, among other things. I've connected it via ethernet (with a 5-port switch between it and the router), and get download speeds in the range of 750-900 Mbps when running speedtest-cli, which is expected. However, the upload speed has never risen above 5 Mbps, although every other machine in the house achieves speeds of 300-400 or more when performing speed tests.

How can I diagnose what might cause these slow upload speeds? I'm not sure what could cause the problem if other devices on the same network have no problems, including another computer connected to the same 5-port switch. I tried basic things like resetting the router and replacing cables and connectors on the switch, but that did not change anything.

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Unit – Adds a new speed to the player in FixedUpdate. Should I use FixedDeltaTime or nothing?

I'm trying to learn how to move objects in Unity without using the built-in features like AddForce and so on. In some of the tutorials on the Unity website (and elsewhere) I have the most of my knowledge so far.

This script for moving players (in Space SHMUP from top to bottom) worked fine for me and contains acceleration and artificial resistance (basically "gentle" movements or the feeling of being on ice).

I'm sure this code is overly long, bloated, inefficient, and in most cases wrong, but it's written to be understood by me instead of just using Unity Prefabs and AssetPackages, which I download from the store.

QUESTION: Do I need the Time.fixedDeltaTime multipliers to calculate my #delta_v? Values ​​here? And what about the drag part below?

As always, all help and comments are very grateful. Many Thanks!

public class Player_Movement_SpaceShooter_TopDown: MonoBehaviour
{
public Vector2 maxVelocity;
pull public swimmers;
public float moveForce;
private Rect moveBounds;

private Rigidbody2D rb;

private void startup ()
{
rb = GetComponent();
moveBounds = Game_Manager.instance.ScreenBounds;
}

private void FixedUpdate ()
{
float input_h = Input.GetAxis ("Horizontal");
float input_v = Input.GetAxis ("Vertical");
Vector2 delta_v = Vector2.zero;

delta_v.x + = input_h * moveForce * Time.fixedDeltaTime;
delta_v.x = Mathf.Clamp (delta_v.x, -maxVelocity.x, maxVelocity.x);
delta_v.y + = input_v * moveForce * Time.fixedDeltaTime;
delta_v.y = Mathf.Clamp (delta_v.y, -maxVelocity.y, maxVelocity.y);

Vector2 pos = rb.position;
Vector2 vel = rb.velocity;
if (pos.x < moveBounds.xMin)
    {
        pos.x = moveBounds.xMin;
        vel.x = 0f;
    }
    if (pos.x > moveBounds.xMax)
{
pos.x = moveBounds.xMax;
vel.x = 0f;
}
if (pos.y < moveBounds.yMin)
    {
        pos.y = moveBounds.yMin;
        vel.y = 0f;
    }
    if (pos.y > moveBounds.yMax)
{
pos.y = moveBounds.yMax;
vel.y = 0f;
}

rb.position = pos;


rb.velocity = vel + delta_v;
rb.velocity = rb.velocity * (1 - Time.fixedDeltaTime * drag);

}


}

2d – Calculate the position at given speed and acceleration at a given time

I am attending a Pixar class at the Khan Academy and encountering a simulation of a double spring at a certain time step. I understand how it works and why it behaves that way, but I want to know if the math is actually correct. What interests me are the following lines:

    // mass 1 speed
mass1VelocityY = mass1VelocityY + mass1AccelerationY * timeStep;
mass1VelocityX = mass1VelocityX + mass1AccelerationX * timeStep;

// ground 1 position
mass1PositionY = mass1PositionY + mass1VelocityY * timeStep;
mass1PositionX = mass1PositionX + mass1VelocityX * timeStep;

So we first calculate the speed and add a fraction of the calculated acceleration to it. Then we calculate the position and add a fraction of the calculated speed to it. So we build the final position in time T by summing T / time step Intermediate positions.

Given the formula for the shift s = ut + 0.5at ^ 2 from where:

s = displacement
u = initial speed
a = acceleration
t = time

If I use the values: s = 0, u = 0, a = 1, t = 2, I get s = 2, This means that if I start from zero and build up the speed with an acceleration of 1 m / s / s, I will end up at position 2 with a speed of 2 m / s.

Now, if I try to follow the same logic, but split that result into 20 steps(2 / 0.1 - t = 2 time step = 0.1)If you summarize the results of all these intermediate steps as in this code, I get another result: s = 0.55 at t = 1 and s = 2.1 at t = 2,

My initial intuition is that, because in the code we multiply timeStep twice with the acceleration in the code, this leads to a potentiation and the progression is no longer linear and smaller steps get smaller values ​​at the beginning. So I have 3 questions:

1) Did I understand what the code is doing right?

2) Is what the code does the most correct / accurate method of calculating the displacement?

3) I really want to understand these concepts. So if you have any other advice or know something that might be helpful to me, please let me know.

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Hetzner Dedicated Terrible Upload Speed

Hello! I bought a dedicated server from Hetzner (first time here) with Windows Server 2016, but my upload speed is terrible. Or can I say better, in very unstable environments! What I mean ? Sometimes I get an upload speed of over 100 Mbps, but most of the time I upload something is 1 Mbps to 3 Mbps! I speak with the support and they tell me they do not see any problem with my connection! I connect my second server to another company and the upload speed is fine! So I am sure that I have a problem with Hetzner! What can I do ?

speed test

DOWNLOAD Mbps 923.74
UPLOAD Mbps 890.69