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#The 7th Lichuang Electric Competition#Simple Oscilloscope

Overview

Oscilloscope

Simple oscilloscope

gpl3.0
.

The signal is sampled by resistor voltage divider, and the magnification can be adjusted to 1/2 and 1/50. The voltage is controlled at plus or minus 1.4 volts by clamping. After isolation by voltage follower, the signal is shifted up by 1.65 volts by op amp plus bias voltage to ensure that the signal is positive voltage, which is convenient for MCU sampling. After the amplification circuit, five magnifications of 1x, 2x, 5x and 10x can be selected. Then the signal is sampled at the ADC port through RC low-pass filtering (optional). The display uses I2C output.

Design Files

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Update:2025-06-19 22:35:30

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