waili robot voice-activated robot student manual diy technology production hair xiaoming scientific experiment material

Voice-controlled robot (Wally), helps children better understand the principles of voice control knowledge. (Of course, there is also a version without voice control function, which you can choose freely).

Note: The difference between the two robots is that one has a voice control switch, while the other does not.

The voice-activated switch is an energy-saving electronic switch that uses sound effects to activate a microphone under specific ambient light conditions to control the power supply of electrical appliances. It consists of a microphone BM, sound signal amplification, half-wave rectification, photocontrol, an electronic switch, a delay circuit, and an AC switch circuit. When someone passes by the switch, footsteps, speaking, or clapping can activate the voice-activated switch, which will automatically turn off after a certain time delay.

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