Video may have killed the radio star, but cell phones and smart phones all but killed the pager. They still exist, of course, but only in very niche applications. [João Santos] wanted a pager-like experience for himself, though, so he enlisted an Arduino and got to work. Watch a video of the system working below.
This is a companion discussion topic for the original entry at https://hackaday.com/2024/03/16/arduino-turned-into-something-kinda-like-a-pager/