It uses an Android device to switch an LED driven by the Arduino. Connectivity is provided by the Bluetooth module inserted in ... off, and blink. You’ll find the voice recognition diagram ...

The Julia programming language is a horrible fit for a no-frills microcontroller like the ATMega328p that lies within the classic Arduino ... manages to blink an LED slowly.

The HID Relay takes the form of a small adapter that has been built using an Arduino Pro Mini, a Bluetooth module, a USB host shield together with a few other components. Check out the video below ...