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Crystal 16 MHz, low profile
On stock: 10
You will need crystal only in case You use chips like ATmega or ATtiny in own boards.
Most of these chips has built-in crystals allowing to work with clock 8 MHz or 1 MHz. When You need higher clock rate or when You need to work with reliable timings (internal oscillators doesn’t have good accuracy) You will need crystal like that.
Once, twice in month we will send You info about new products, products on sale and news from Arduino and DIY world.