Robotics Circuit Diagrams

Stereo Robot Ears Schematic Circuit Diagram

Stereo Robot Ears are an essential component for robots that need to hear their surroundings to interact with their environment. These ears are designed to mimic human ears and can be used for a wide range of applications, such as speech recognition, object detection, and sound localization. In this article, we will discuss the schematic circuit diagram for stereo robot ears and provide complete details on how it works.

Stereo Robot Ears Schematic

The schematic circuit diagram for stereo robot ears consists of three main components: a microphone, an amplifier, and a filter circuit. The microphone is responsible for picking up sound waves, which are then amplified and filtered to produce a clean and clear signal.


  • The microphone used in stereo robot ears is a miniature electret condenser microphone. These microphones are compact and have a high sensitivity to sound. The microphone is connected to the amplifier circuit through a coupling capacitor, which helps remove any DC bias from the signal.


  • The amplifier circuit used in stereo robot ears is a pre-amplifier circuit that amplifies the signal from the microphone to a usable level. The amplifier circuit is built around an operational amplifier, such as the LM358 or LM386. The operational amplifier is configured as a non-inverting amplifier, which provides a high input impedance and a low output impedance. This configuration helps to reduce noise and provide a clean signal.

Filter Circuit:

  • The filter circuit is used to remove any unwanted noise or frequencies from the signal. The filter circuit is built around a passive low-pass filter, which attenuates high-frequency signals and passes low-frequency signals. The cutoff frequency of the filter circuit is set to around 10 kHz, which is the upper limit of human hearing.

In addition to these main components, the schematic circuit diagram for a stereo robot ear also includes some additional features, such as resistors, capacitors, and potentiometers. These components are used to adjust the gain of the amplifier circuit and the cutoff frequency of the filter circuit.

Overall, the schematic circuit diagram for stereo robot ears is relatively simple and easy to build. It can be built using commonly available components and can be easily modified to suit specific requirements. With this schematic diagram, a robot can be equipped with stereo hearing, enabling it to detect and react to sounds in its environment.


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