Even if you don’t have much (or any) experience with basic electrical circuits, [Afroninja] explains the concept of an H-Bridge motor controller in a clear, concise and easy way to understand.

In this DIY tutorial, learn how to make your very own USB electric lighter at home with simple materials and step-by-step ...

Tutorial: DNP3 - SCADA, Clear and Simple DNP3 was developed in the early 1990s to include all functionality found in the hundreds of proprietary protocols in use at that time.

Luckily, [Paul] sent in a great tutorial on building a LiPo charger that works over USB. In the original design of [Paul]’s board, he chose a Maxim MAX1551 Lithium battery charger.

This design shows how a piezoelectric transducer's acoustic output can be increased while minimizing the parts count and cost.