To move a single light left and right, the hardware circuit is shown in the figure. The eight light-emitting diodes L1 - L8 are respectively connected to the P1.0 - P1.7 interfaces of the single-chip computer. When the output is "0", the light-emitting diode lights up. At the beginning, P1.0 → P1.1 → P1.2 → P1.3 →┅→ P1.7 → P1.6 →┅→ P1.0 lights up, and the cycle repeats.
Use an 8-core cable to connect P1.0 - P1.7 in the "MCU System" area to the L1 - L8 ports in the "Eight-way LED Indicator Module" area. The requirements are: P1.0 corresponds to L1, P1.1 corresponds to L2, ... ... P1.7 corresponds to L8.
Figure 1. Circuit diagram of left and right movement of advertising light based on single chip microcomputer
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