Starter Guide

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Response signal: After receiving the 8-bit data, the receiving IC sends a
specific low-level pulse to the sending IC, indicating that the data has been
received.
After the CPU sends a signal to the controlled unit, it waits for the controlled
unit to send a response signal. After receiving the response signal, the CPU
makes a judgment as to whether to continue transmitting the signal
according to the actual situation. If the response signal is not received, it is
judged to be an error occurs in the controlled unit.
IIC interface module：
SDA
Data Pin
SCL
Clock Pin
+
3.3V
-
GND
Operating steps
1. First, we need to prepare the following experimental materials: