More ideas from Piter
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Barbara Palvin - Series inspired by time

Barbara Palvin - Series inspired by time

helloworlditsjared: “Maia Cotton (The Lions) // New York, NY Shot by Jared Thomas Kocka. Facebook l Instagram l Website ”

helloworlditsjared: “Maia Cotton (The Lions) // New York, NY Shot by Jared Thomas Kocka. Facebook l Instagram l Website ”

WARNING: Some people try to build this with an optocoupler with zerocrossing coz 'that is better' right? Some are even told in electronics shops it is better to use such an optocoupler. WRONG. This will only work with a random fire optocoupler: NOT igniting at zerocrossing is the principle of this dimmer.Switching an AC load with an Arduino is rather simpel: either a mechanical relay or a solid state relay with an optically isolated Triac. (I say Arduino, but if you use an 8051 or…

WARNING: Some people try to build this with an optocoupler with zerocrossing coz 'that is better' right? Some are even told in electronics shops it is better to use such an optocoupler. WRONG. This will only work with a random fire optocoupler: NOT igniting at zerocrossing is the principle of this dimmer.Switching an AC load with an Arduino is rather simpel: either a mechanical relay or a solid state relay with an optically isolated Triac. (I say Arduino, but if you use an 8051 or…

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Measure RPM - an optical tachometer ---- HEY HEY!!!  For more COOL ARDUINO stuff, check out http://arduinohq.com

This Instructable will show you how to make a Portable Digital Optical Tachometer using an Arduino Uno. Instead of a slotted sensor , it has a reflection based.

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