What Is Pascal Many people from my age still remember from university studies what is Pascal. A wide description of this very old programming language can be found in Wikipedia Pascal description page. Pascal is an imperative and procedural programming language, created as a small, efficient language intended to encourage good programming practices. It is […]
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Pi-hole is a DNS server that protects your devices from unwanted content, without installing any client-side software. Clients requesting for web resources usually query public DNS servers to resolve mnemonic addresses (for example “peppe8o.com”) into IP addresses to be reached. But many internet pages include tons of internal elements redirecting to adverisement providers. It can
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A photoresistor (also known as photocell) is a Light Dependent Resistor (LDR). As the name suggests, these components act just like a resistor, changing their resistance in response to how much light is falling on it. Usually, photoresistors have a very high resistance in near darkness and very low resistance in bright light. This component
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Infrared sensors are really common to devices which need to be controlled from a remote within reduced distances. Typical applications are in remoting TV, media center, robots, air conditioning systems, etc. With the growth of mass production, their prices have plummeted and can be found on e-commerce websites. Linux systems have a spread package called
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The biggest question for Raspberry PI Foundation boards user comes when choosing the Operating System to use. There are many OSes available for all models, each one fitting the best specific needs. This article lists the main alternative Raspberry PI OS Usually, all operating systems can be installed easily by getting their image file (.img
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A web crawler (also known as spider or spiderbot) is an internet bot that continually browses web pages, typically for web indexing purposes.Typically Search Engines use web crawling ito scan the web and be aware of contents, links and websites relations. These data are processed to understand what results better fit users queries. Crawlers consume
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Ultrasonic Sensors are great for all kind of projects that need distance measurements, avoiding obstacles as example. The HC-SR04 is inexpensive and easy to use and can be easily connected with a Raspberry PI Ultrasonic sensor module HC-SR04 provides 2cm-400cm non-contact measurement function, the ranging accuracy can reach to 3mm. The basic principle of work:
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4 Digit 7 Segment Display is a simple electronic display, similar to Single 7 segment display, but composed of 4 digits than can show at the same time 4 chars. It also has dot leds, but in different confiurations (single for each digit, central colon, etc). 4 digit 7 segment display is widely known and
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