$3 Homemade Oscilloscope for Smartphones and Tablets.

A simple homemade oscilloscope that we will need later when designing our important project. This unit is fairly easy to make just follow the diagram. Keep in mind that the max voltage your phone could handle is 3.7 volts and your wave is about 20mV. The software I am using is called AR-Oscilloscope.
/ @iwokramainternational...