If you are not using a 3.3V Arduino board, that Arduino will send 5V signals to the SI473X device through the digital pins and the I2C bus. That configuration can make the system unstable or damage ...

once every half second, and then it should blink 5 more times, once every two seconds. The LED should continue to blink in this alternating fashion for as long as the Arduino receives power.

Brushless motors are fascinating devices that come in all sorts of shapes and sizes, but you’ve probably never seen one in the form of a free-spinning shiny metal egg. Created by [David Windestål], ...