https://alexanderdevelopment.net/tag/arduino/Recent content in arduino on Alexander DevelopmentHugo -- gohugo.ioen-usFri, 26 Oct 2018 14:11:53 +0000https://alexanderdevelopment.net/post/2018/10/26/a-motion-activated-spider-for-halloween-with-an-arduino-and-a-raspberry-pi/Fri, 26 Oct 2018 14:11:53 +0000https://alexanderdevelopment.net/post/2018/10/26/a-motion-activated-spider-for-halloween-with-an-arduino-and-a-raspberry-pi/Every year my family hangs a large decorative spider over our doorway for Halloween. This year I decided to make it flash red LED eyes and play a random assortment of spooky sounds (including, but not limited to, bats, chains and the Vincent Price laugh from “Thriller”) when trick-or-treaters come to the door.