When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Another Arduino example. An astonishing microwave radar sensor with send and receive antennae printed on each side of the board. Hook it up to a power source and the output pin will go logic-high for 2 seconds when the antennae detect a radar "ping".
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.