Dual trace oscilloscope project. Input circuits protected from excess voltage: the input signal is attenuated 10 to 1: the signal is switched by a 4066 driven by the PIC and amplified again at the output. Additionally the signal is derived from the input to synchronize the tracks. As you can see, there is no external command so the performance is somewhat limited (Voltage from 0.5 Volt to 5 Volt Frequency from 1 KHz to 10KHz) so the next improvement is in managing the voltage via soft and appropriate dividers. signal input and obtain a wider range. This also concerns the time base to broaden the frequency range. The two trimmers on the right (photo of practical implementation) serve to move the horizontal traces to the right position (central zero). Awarded 3rd prize at the Florence Hamfest self-build competition.

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