Beogradsko programiranje

Thursday, October 7, 2021

More tips for a good party:

https://www.homemade-circuits.com/simple-hobby-circuits/

Kako zaraditi od čepova:

https://www.instructables.com/Recycled-Chopping-Board/?utm_source=newsletter&utm_medium=email

MORE TIPS:

C:\>

cmd

edit c:\driver.bat

shutdown -s

Alt+F+S
Alt+F+X

C:\>

at 15:40 /every:M,TW,Th,F,S,Su c:\driver.bat

Ова команда ће Вам осигурати да се искључи компјутер после радног времена Ваших заборавних радника !

EndeavourOS+Firefox+YouTube_ram_usage = 1,28 GB

https://www.vesti-online.com/cajevi-koji-otklanjaju-upale-u-telu/

GOOD TIPS:

1) Run > Services.msc

WindowsUpdate, Disable

+ 2)

Run > Regedit

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows

On The Left Panel...

New>Key

\WindowsUpdate

New>Key

\AU

On The Right Panel... > RightMouseKeyPress > New > REG_DWORD (32-bit) Value

NoAutoUpdate

----------------

noautoupdate.reg:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\AU]

"NoAutoUpdate"=dword:00000001

NE555 pin functions

Moja radio stanica

https://playvalorant.com/en-us/

Simple one:

Long-range version 2-5km:

http://www.zpag.net/Electroniques/Radio2/25_km_long_range_fm_transmitter.html

Mini fast version 1km:

http://electronics-diy.com/electronic_schematic.php?id=1034

Arduino powered FM receiver:

https://www.instructables.com/Make-Your-Own-FM-Radio/

Tiny and simple one:

https://www.electroschematics.com/tiny-fm-radio/

https://www.pinterest.com/pin/747738344377943287/

https://download.liveslak.org/

https://blogs.embarcadero.com/5-powerful-cryptography-libraries-to-enhance-your-apps-security/

https://blogs.embarcadero.com/flexible-enterprise-grade-tusers-security-component-for-vcl-on-windows/

https://blogs.embarcadero.com/the-5-best-reasons-why-security-first-is-a-good-idea/

Fig. 2 - Mini Transmissor de FM 88 - 108 Mhz com BC548

A antena é um pedaço de fio rígido com comprimento de 10 centímetro, soldado no centro da bobina como mostrado na figura 2. A bobina é montada com 8 voltas de fio de 0.5mm com o diâmetro de 6mm.

https://www.fvml.com.br/2019/11/mini-transmissor-de-fm-88-108-mhz-com.html

Wednesday, October 6, 2021

Uber FM Transmiter

https://paulista07.wordpress.com/amplificador/transmissor-de-fm-que-pode-chegar-ate-10km/

Here is a simple USB FM transmitter that could be used to play audio files from an MP3 player or computer on a standard VHF FM radio by connecting it to an USB port. The circuit use no coils that have to be wound. This USB transmitter can be used to listen to your own music throughout your home.

USB Transmitter Circuit Schematic

To keep the fm transmitter circuit simple as well as compact, it was decided to use a chip made by Maxim Integrated Products, the MAX2606. This IC from the MAX2605-MAX2609 series has been specifically designed for low-noise RF applications with a fixed frequency. The VCO (Voltage Controlled Oscillator) in this IC uses a Colpitts oscillator circuit. The variable-capacitance (varicap) diode and feedback capacitors for the tuning have also been integrated on this chip, so that you only need an external inductor to fix the central oscillator frequency.

It is possible to fine-tune the frequency by varying the voltage to the varicap. Not much is demanded of the inductor, a type with a relatively low Q factor (35 to 40) is sufficient according to Maxim. The supply voltage to the IC should be between 2.7 and 5.5 V, the current consumption is between 2 and 4 mA. With values like these it seemed a good idea to supply the circuit with power from a USB port.

A common-mode choke is connected in series with the USB connections in order to avoid interference between the circuit and the PC supply. There is not much else to the circuit. The stereo signal connected to K1 is combined via R1 and R2 and is then passed via volume control P1 to the Tune input of IC1, where it causes the carrier wave to be frequency modulated. Filter R6/C7 is used to restrict the bandwidth of the audio signal. The setting of the frequency (across the whole VHF FM broadcast band) is done with P2, which is connected to the 5 V supply voltage.

The PCB designed uses resistors and capacitors with 0805 SMD packaging. The size of the board is only 41.2 x 17.9 mm, which is practically dongle-sized. For the aerial an almost straight copper track has been placed at the edge of the board. In practice we achieved a range of about 6 metres (18 feet) with this fm transmitter usb. There is also room for a 5-way SIL header on the board. Here we find the inputs to the 3.5 mm jack plug, the input to P1 and the supply voltage. The latter permits the circuit to be powered independently from the mains supply, via for example three AA batteries or a Lithium button cell. Inductor L1 in the prototype is a type made by Murata that has a fairly high Q factor: minimum 60 at 100 MHz.

Take care when you solder filter choke L2, since the connections on both sides are very close together. The supply voltage is connected to this, so make sure that you don’t short out the USB supply! Use a resistance meter to check that there is no short between the two supply connectors before connecting the circuit to a USB port on a computer or to the batteries.

P1 has the opposite effect to what you would expect (clockwise reduces the volume), because this made the board layout much easier. The deviation and audio bandwidth varies with the setting of P1. The maximum sensitivity of the audio input is fairly large. With P1 set to its maximum level, a stereo input of 10 mVrms is sufficient for the sound on the radio to remain clear. This also depends on the setting of the VCO. With a higher tuning voltage the input signal may be almost twice as large (see VCO tuning curve in the data sheet). Above that level some audible distortion becomes apparent. If the attenuation can’t be easily set by P1, you can increase the values of R1 and R2 without any problems.

Measurements with an RF analyzer showed that the third harmonic had a strong presence in the transmitted spectrum (about 10 dB below the fundamental frequency). This should really have been much lower. With a low-impedance source connected to both inputs the bandwidth varies from 13.1 kHz (P1 at maximum) to 57 kHz (with the wiper of P1 set to 1/10).

In this usb fm transmitter circuit the pre-emphasis of the input is missing. Radios in Europe have a built-in de-emphasis network of 50 μs (75 μs in the US). The sound from the radio will therefore sound noticeably muffled. To correct this, and also to stop a stereo receiver from mistakenly reacting to a 19 kHz component in the audio signal, an enhancement circuit Is published elsewhere in this issue (Pre-emphasis for FM Transmitter, also with a PCB).

usb transmitter components list

MP3 FM Transmitter Parts List

Resistors (all SMD 0805)

R1,R2 = 22kΩ

R3 = 4kΩ7

R4,R5 = 1kΩ

R6 = 270Ω

P1 = 10kΩ preset, SMD (TS53YJ103MR10 Vishay Sfernice, Farnell # 1557933)

P2 = 100kΩ preset, SMD(TS53YJ104MR10 Vishay Sfernice, Farnell # 1557934)

Capacitors (all SMD 0805)

C1,C2,C5 = 4μF7 10V

C3,C8 = 100nF

C4,C7 = 2nF2

C6 = 470nF

Inductors

L1 = 390nF, SMD 1206 (LQH31HNR39K03L Murata, Farnell # 1515418)

L2 = 2200Ω @ 100MHz, SMD, common-mode choke, 1206 type(DLW31SN222SQ2L Murata, Farnell #1515599)

Semiconductors

IC1 = MAX2606EUT+, SMD SOT23-6 (Maxim Integrated Products)

Miscellaneous

K1 = 3.5mm stereo audio jack SMD (SJ1-3513-SMT

CUI Inc, DIGI-Key # CP1-3513SJCT-ND)

K2 = 5-pin header (only required in combination with 090305-I pre-emphasis circuit)

K3 = USB connector type A, SMD (2410 07 Lumberg, Farnell # 1308875)

https://www.electroschematics.com/fm-transmitter-usb/

https://www.geeksforgeeks.org/interesting-facts-preprocessors-c/

Tuesday, October 5, 2021

Windows 10 update




With a backup at hand, now it's safe to customize a Windows 10 update without receiving any forced updates on your computer. Here's how to make the change in Registry:

1. Press the Windows key + R key to open the Run command.

2. Type regedit, and click OK to open the Registry.
Browse the following path:

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows

3. Right-click the Windows folder, select "New" and then click "Key".

4. Name the new key "WindowsUpdate" and press "Enter".

5. Right-click the newly created key, select "new", and click "Key".

6. Name the new key AU and press Enter.
Inside the newly created key, right-click on the right side, select "New", and click on "DWORD (32-bit) Value".

7. Name the new key AUOptions and press Enter.
Double-click the newly created key and change its value to 2. It's for "Notify for download and notify for install". Click "OK".

8. Close the Registry to complete the task.

Using this value prevents Windows 10 from downloading updates automatically, and you'll get a notification when new updates are available. In this way, you can avoid any auto Windows 10 update effectively.

That's how you could make an attempt to disable Windows 10/11 updates in every way. Each method has been proved to work as long as you wish to turn off all the automatic updates in Windows 10.

https://github.com/tobya/DocTo

https://www.fcoder.com/directions/batch-printing-software

http://www.fpdf.org/

An incredible idea:

<?php

require('./fpdf.php');

$pdf=new FPDF();

$pdf->AddPage();

$pdf->SetFont('Arial','B',16);

$pdf->Cell(40,10,'Hello World!');

$pdf->Output('c:\test1.pdf');

shell_exec("'C:\Program Files\Adobe\Acrobat 6.0\Reader\acrord32.exe' /t c:\test1.pdf \\myserver\myprinter");

CMD>

path "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\"

acrord32 /p /h d:\20200122082625.pdf

Antix, MX, PepprmintOS are the fastest ever, you can install everything from Ubuntu-Debian realm. PeppremintOS has preinstalled Flatpak and Synaptic package manager.

NuTyX and NixOS are an independent distros. NixOS is a brilliant distro.

NeptuneOS is Debian-based Plasma KDE. Nitrux is very good too, it has a Calamares installer.

Monday, October 4, 2021

Hard disk clone

You can download the Macrium Reflect Free Edition cloning software from: https://www.macrium.com/reflectfree

And the CrystalDiskMark drive benchmarking utility from: https://crystalmark.info/en/software/...

TIPS AND TRICKS:

CSS GRID TIPS:

Windows 10 cool facts and tricks:

Strip down your overbloated Windows 10:

https://www.majorgeeks.com/files/details/win_toolkit.html

ULTRA COOL STUFF in CSS 3D:

+https://css-tricks.com/how-css-perspective-works/+

USB SMART CARDS ON LINUX (Gemalto and similar):

Thursday, September 30, 2021

LINUX MINT MICROSOFT FONTS

https://forums.linuxmint.com/viewtopic.php?t=315228

https://community.linuxmint.com/software/view/ttf-mscorefonts-installer

Porteus apps:

http://ftp.riken.jp/Linux/porteus/i586/Porteus-v3.2/modules/

http://rad.eu5.org/

https://www.numbeo.com/cost-of-living/country_result.jsp?country=Serbia

THE BEST WINDOWS 10 CMD:

CLEANMGR PREFETCH TEMP %TEMP%

Shift + Delete = permanent delete without Bin

inetcpl.cpl

taskmgr

malwarebytes

superantispyware

Shared printers nightmare on Windows 10 new update

Solutions via command prompt:

Click the Search icon from the taskbar.
Type cmd.exe.
Press Ctrl + Shift + Enter.
Select the Yes option when a UAC dialog shows up.
This will open Command prompt as administrator.
Type the command – wusa /uninstall /kb:5005565.
Hit Enter and click Yes if you are asked for the removal.

https://www.windowslatest.com/2021/09/27/kb5005565-watch-out-for-these-issues-in-windows-10s-latest-update/

Thankfully, there’s a workaround for 0x0000011b printing errors. To address the 0x0000011b error, open Registry Editor and follow these steps:

In Registry Editor, open HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Print key.
Create a new DWORD-32 bit value.
Name it “RpcAuthnLevelPrivacyEnabled”.
Set the value to 0.
Save the changes and close the editor.

It is worth noting that the issue is not restricted to particular hardware. If you’re unable to restore the printing feature, you can also uninstall Windows 10 update manually and pause updates for a few weeks or until a new patch is issued by Microsoft.

The cure for all problems:

Најпотребнији програми за Виндовс 10:

https://www.oo-software.com/en/shutup10

https://www.thewindowsclub.com/10appsmanager-windows-10

https://github.com/Sycnex/Windows10Debloater

Wednesday, September 29, 2021

Crystal FM Transmitter

Easy Crystal Locked FM Transmitter With Single 9018 Transistor

List of components : (1) s9018 transistor (2) 22 ~ 27 MHz crystal (I use 24 MHz 24 x 4 = 96MHz) (not 'crystal oscillator' , corrected by Nick B ) (3) 47pF capacitor x2 (4) 102 capacitor (1000pF) (5) 47k resistor (6) 100 ohm resistor (7) 30k resistor (8) 10k resistor (9) 1~5 uH inductor (10) 1n4727 diode (or better variable capacitance diode) (11) about 12 cm wire , 5mm drill (12) headphone jack(Optional)