LittleBits is aware of just how intimidating these make-it-yourself gadgets can be, so it has just launched its first software-programmable module, the Arduino at Heart.

An Arduino nano and relay module with 4 relays (see picture above) was used to simulate and replace the guitar 3-step switch. The project for Arduino is in PlatformIoClamp15.

As Arduino Nano board (Board2) cannot provide sufficient current to drive a relay, a 5V DC power adaptor is used for powering the relay module/board (RM1). To use 5V DC power adaptor with the circuit, ...

Usage Connect the ESP32 to the relay module and the light source as described in the Wiring section. Upload the Arduino code to the ESP32 using the Arduino IDE. Observe the light source as it displays ...

The RGB LED module lets you make all sorts of colors with just four pins from the Arduino. Learn how to do it here!