Reprinted from: " Using Python to control hardware 38-Measuring the resonant frequency of an object using the accelerometer ADXL335 "Physics tells us that any object will have resonance (such as the t
This article will show you how to use UrBackup and Linux Deploy to build a backup server on an old Android phone. The pollution problem of old phones is well known. I have an old phone. Although the s
A capacitor is a passive device that stores energy in the form of an electric field, consisting of two conductive parallel plates. When needed, it will release the stored energy out of the circuit. Ca
[i=s]This post was last edited by dcexpert on 2021-12-17 15:44[/i]This negative ion generator requires three CR123A batteries, which is inconvenient and costly (one CR123A battery costs 4-9 yuan).Ther