Circuit diagram of light-controlled tank toy

This light-controlled tank toy is modified from an ordinary mechanical toy tank. The photodiode is installed in the front part of the barrel, and the rest of the circuit is installed in the turret and the body. When you turn on the power switch, the tank will rush towards you "aggressively". At this time, you just need to calmly hit it with the photoelectric gun, and it will "retreat" obediently. However, it will not give up. After stopping for three seconds, it will launch a "sudden" attack on you again until you hit it again. This toy can train children's composure, calmness, wit and flexibility.