Hi Guys, Would appreciate some help. I have a Yun. And LCD Keypadshield and a 4 channel relay ( http://4tronix.co.uk/store/index.php?rt=product/product&product_id=153 ) This particular relay requires a digitalwrite HIGH to keep to relay off and LOW to turn it on. So Basically Yun+ LCD+ 4 relays be…

It's about time I understood analogref(Internal)

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