In this video, I've partnered with Inventables to create some portable Bluetooth speakers! Each speaker represents an opposite end of the spectrum. One is a simple speaker that most DIYers could make ...

So why use ESP-NOW rather than WiFi or Bluetooth? Mostly because of range, power usage and convenience with no SSIDs and passwords to bother with. The DIY Walkie-Talkie circuit diagram.

There’s his DIY LED display controlled by an Arduino UNO. To have some text or picture for the display, he’s wired the output of a Bluetooth speaker directly to the Arduino, and sends it ...