PIR or “Passive Infrared Sensors” have many applications, especially in motion detection. They are a cornerstone of home automation systems. And recently, I got a few promising new detectors to compare—time for a closer look. I am a proud Patreon of GreatScott!, Electroboom, Electronoobs, EEVblog, and others Links: AM312: https://s.click.aliexpress.com/e/_dUGryJX HC-SR501: https://s.click.aliexpress.com/e/_dZ8KpcV HC-SR505: https://s.click.aliexpress.com/e/_d6Hqtgl EKMC1603111: https://s.click.aliexpress.com/e/_d8QFp6v EKMC1601111: https://s.click.aliexpress.com/e/_dTgIfJ3 AM612 (5pcs): https://s.click.aliexpress.com/e/_dTKPV9n AMG8833: https://s.click.aliexpress.com/e/_dVQsI0D ESP32: https://s.click.aliexpress.com/e/_dYi6xe1 ESP32 base: https://s.click.aliexpress.com/e/_d66gEzT ESP8266 base: https://s.click.aliexpress.com/e/_d8bueL9 HC_SR501 hack: https://lowpowerlab.com/guide/motionmote/pir-sensor-options/ The links above usually are affiliate links which support the channel (no additional cost for you). Supporting Material and Blog Page: http://www.sensorsiot.org/ Github: https://www.github.com/sensorsiot My Patreon Page: https://www.patreon.com/AndreasSpiess Discord: https://discord.gg/JfgDSa8 If you want to support the channel, please use the links below to start your shopping. No additional charges for you, but I get a commission (of your purchases the next 24 hours) to buy new stuff for the channel My Amazon.com shop: https://www.amazon.com/shop/andreasspiess For Banggood https://bit.ly/2jAQEf4 For AliExpress: http://bit.ly/2B0yTLL For Amazon.de: http://amzn.to/2r0ZCYI For Amazon UK: http://amzn.to/2mxBaJf For ebay.com: http://ebay.to/2DuYXBp https://www.facebook.com/profile.php?id=100013947273409 https://twitter.com/spiessa https://www.instructables.com/member/Andreas%20Spiess/ Please do not try to Email me or invite me on LinkedIn. These communication channels are reserved for my primary job As an Amazon Associate, I earn from qualifying purchases