IC LM 555 as eazy and cheap TIMER

IC 555 most popular as multivibrator and can design as easy and cheap timer like this circuit. The TIME that you want as timer be calculate: 1.1R∗C A relay timer circuit using the 555. On pressing the switch the relay is activated for a time determined by 1.1R∗C, where R∗ equals 100k plus the setting of the 470 kW variable and C is the capacitor value that hasbeen selected by the switch. Note the use of diodes to prevent latch-up and damage to the IC when the relay isswitched off. ...

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TDS tester Home Made DIY

TDS METER is a worthy water Consumption Threshold measure.Pure water or water that is not contaminated is usually a maximum of 3 ppm only. -Meanwhile, according to World Health Organization (WHO) drinking water worthy no more than 50 ppm. Ministry of Health Government of Canada limit to 40 ppm. Parts per million (ppm) is the description of solute or equal to milligrams per liter. Standards Compliance issued by NSF (National Sanitation Foundation), clean and pure water has a TDS <40 ppm. TDS itself stands for Total Dissolved Solids, the number of solid elements or compounds that are dissolved in the water such as aluminum, iron, silver,...

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You wana download ATMEL Studi without sign up

If you want to download ATMEL studio 6.1 without sign up just open this link this ...

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