A clean and organized home is something we all aspire for, but due to our super busy schedules, we might be unable to do so.

When turned on, the PowerSmith generated about 82 decibels (manufacturer cites 79 decibels), which is about as loud as a standard vacuum cleaner. We found the noise level quite comfortable.

We evaluated each vacuum on the following metrics: suction power, battery life, ease of disposal, noise readings, and, of course, how well they remove various types of debris from the floor.

Several techniques exist, but [Wolfgang] over at the Electronic Projects for Fun blog decided to go for the classic method of using a vacuum diode. He describes the design and analysis of a noise ...