Make a Heartbeat Display with Adafruit ESP32 Feather V2
jgschmidt created this display to show heartbeat information from a Polar chest strap device and shared the steps on Instructables:Here is where I found ESP32 boards that can communicate to the Polar Bluetooth-enabled chest straps. Connect one of these to a large (relatively speaking) OLED display, and I could probably get what I want.Read moreAdd…









