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  • Salvaging Rechargeables for Projects

    Electrical fire extinguisher (also known as Class "C" in Australia Class "E")...Actually _no_ If a lithium cell is in the state of a thermal runaway, it is a Class "D" fire. A metal fire. Quote from wikipedia: "As with all alkali metals, lithium fires are difficult to extinguish, requiring dry powder fire extinguishers (Class D type). Lithium is one of the few metals that react with nitrogen under normal conditions."Maybe you know about the fact that our Atmosphere contains ~78% nitrogen.But even a dry powder Class D extinguisher isn't the best option. Just use two metal buckets, or clay pods, both filled 1/2 with sand. If a cell gets hot, throw it in on of the buckets and fill it up with the sand from the other bucket.Just a quick note from som...

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    Electrical fire extinguisher (also known as Class "C" in Australia Class "E")...Actually _no_ If a lithium cell is in the state of a thermal runaway, it is a Class "D" fire. A metal fire. Quote from wikipedia: "As with all alkali metals, lithium fires are difficult to extinguish, requiring dry powder fire extinguishers (Class D type). Lithium is one of the few metals that react with nitrogen under normal conditions."Maybe you know about the fact that our Atmosphere contains ~78% nitrogen.But even a dry powder Class D extinguisher isn't the best option. Just use two metal buckets, or clay pods, both filled 1/2 with sand. If a cell gets hot, throw it in on of the buckets and fill it up with the sand from the other bucket.Just a quick note from someone who build a 1.5kWh battery from 18650s.

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  • Kontrolliere KODI mit vorhandener Fernbedienung

    Relativ gutes tutorial, hab mir auch einen Empfänger gebastelt. Leider sendet mein Fernseher ungefähr auf der gleichen Frequenz IR Signale aus welcher mein Empfänger empfängt... vielleicht kann ich noch eine Abschirmung basteln. btw. ich hab das ganze mal auf Github hoch geladen --> https://github.com/tschaerni/arduino-stuff/blob/master/IR_to_keyboard/IR_to_keyboard.ino

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