Here is a fascinating USB-powered LED Candle armed by the Digispark USB Development Board based on...
Arduino is one of the most exciting embedded development board evolved from the open source community to learn and build arduino projects for hobbyists and electronic enthusiasts. It is the best resource for making DIY projects and Prototypes.
The Arduino makes use of different Microprocessors and on-chip microcontrollers to design devices that interact with the sensors and actuators.
The most popular variants of Arduino are Arduino UNO, Arduino YUN, Arduino LEONARDO, Arduino NANO, Arduino MEGA.
Arduino comes with prebuilt shields for ease of interfacing various add-on modules like GSM/GPRS shield, Ethernet shield, USB shield, and Wireless shield for IOT projects.