Commercial Smartwatch VS DIY Heart Rate Monitor

Choose DHL for Fast Ship PCBs on JLCPCB: https://jlcpcb.com/?ref=greatscott Previous video: https://youtu.be/PKowvbnIxso Facebook: https://www.facebook.com/greatscottlab Twitter: https://twitter.com/GreatScottLab Support me for more videos: https://www.patreon.com/GreatScott?ty=h My smartwatch (affiliate link): https://amzn.to/3aw1JGo More project information (schematic, pictures, code.....) on instructables: https://www.instructables.com/id/DIY-Heart-Rate-Monitor-logger Parts list (incomplete, see Instructables for more, affiliate links): Aliexpress: 1x LiPo Battery: https://s.click.aliexpress.com/e/_d6jtyKS 1x Slide Switch: https://s.click.aliexpress.com/e/_dYGop3Y 1x MCP1700 3.3V Regulator: https://s.click.aliexpress.com/e/_d8ldQ90 1x Grove Heart Rate Sensor: - 1x OLED Display: https://s.click.aliexpress.com/e/_BffOD3gi 1x Arduino Pro Mini: https://s.click.aliexpress.com/e/_d62ALdV 1x Micro SD Card Board: https://s.click.aliexpress.com/e/_dVMMRTg In this video I will show you how a commercial smartwatch measures and monitors your heart rate and afterwards I will show you how to create a DIY circuit that can basically do the same with the addition that it can also store the heart rate data on a micro SD card. At the end I will then compare both heart rate monitors in order to find out whether my smartwatch still works fine. Let's get started! Thanks to JLCPCB for sponsoring this video Visit https://jlcpcb.com to get professional PCBs for low prices Music: 2011 Lookalike by Bartlebeats