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The algebraic sum of the voltages in a closed loop is always equal to zero.
Kirchhoff’s Voltage Law, Gustav Kirchhoff

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Example Service About Automatic Restoration of iptables

In some cases, we need to load iptables after everything has started. The following is an example of a service to accomplish this. The service starts when the server is idle, checks for the executable file, and then starts it. [Unit] Description=runs iptables restore on boot ConditionPathExist=/etc/iptables-my/iprestore.sh After=network.target [Service] Type=idle

Categories: How To|

Experience With Setting Up Ports

Sometimes, when you don't work with a specific system, you can forget how to set it up or check its settings. This happened to me when I set up an Ubuntu server. It had been 6-7 years since I last worked on this type of server, and I missed out

Categories: How To|

Import JSON file in TypeScript

In this example, I will show you a simple way to import JSON files in TypeScript code. It requires just two simple steps. The first is to change the tsconfig.json file by adding the line: , "resolveJsonModule": true in "compilerOptions" section. { "compilerOptions": { ... , "resolveJsonModule": true ... } ...

Categories: How To|

An Introduction to USB Communication (Part 1)

USB (Universal Serial Bus) is an industry-standard used to specify cables, connectors, and protocols that are used for communication between electronic devices. Advantages: Self-configuring interface, no need for user configuration of speed, data protocol, etc.Capable of supplying power to small auxiliary devicesVarious communication speeds are supportedStandard connectorsError checking increases the

Categories: Embedded Systems|Tags: |

FreeRTOS: Using MCU Peripheral Drivers

Communication interfaces (I2C, SPI, UART, etc.) are some of the most commonly used microcontroller peripherals in embedded systems. In this introductory article, we will look at how low-level drivers for such peripherals can be used in FreeRTOS. Polled Drivers vs Interrupt-driven Drivers Based on the method used for getting information

Categories: Embedded Systems|Tags: , |
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