the secret knock project

A prototype for a secret knock device was developed. This device is designed to detect a specific knock pattern that has been programmed into its system. Upon recognizing the correct knock, it activates a motor that can be utilized to unlock various mechanisms such as doors, chests, or boxes, offering a range of potential applications.

The secret knock device operates using a combination of audio detection and motor control. It typically includes a microphone to capture sound, a microcontroller to process the audio signal, and a motor driver circuit to control the unlocking mechanism. The microphone continuously listens for knocks, and when a sound is detected, the microcontroller analyzes the audio waveform to identify the specific pattern that corresponds to the programmed secret knock.

The microcontroller can be programmed using various algorithms, such as Fast Fourier Transform (FFT) or pattern recognition techniques, to accurately distinguish the secret knock from ambient noise. Once the correct pattern is identified, the microcontroller sends a signal to the motor driver circuit, which then activates a motor. This motor can be connected to a locking mechanism, such as a solenoid lock or a servo motor, which physically unlocks the door, chest, or box.

Power supply considerations are crucial for the device's operation. It may be powered by batteries or an external power source, depending on the intended application and mobility requirements. Additionally, the design may include features such as LED indicators to provide visual feedback when the correct knock is detected, enhancing user experience.

Overall, this secret knock device presents an innovative approach to secure access control, combining audio recognition technology with mechanical unlocking systems to create a versatile and user-friendly solution.Last Saturday, we made the prototype for the secret knock device we are working on. The device, will listen for a secret knock that has been programmed into it. If it hears the correct knock, it drives a motor which it can use to unlock a door, chest, or box. There are plenty of possibilities. .. 🔗 External reference