The three pins of the Knock Sensor Module are GND, +5V and Sig. The following image shows the components of a Knock Sensor Module as well as ... I have designed a simple circuit using Arduino, Knock ...

The soil moisture sensor module , built around the LM393 comparator, gives an active-low (L) level output when the soil is dry (determined by a pre-setted threshold value). This digital output (wet ...

This Arduino project implements a GSM-based knock sensor alarm system. The system is designed to detect physical impacts or knocks using a knock sensor and send alerts via SMS and phone call to a ...

Knock sensors are devices used in internal combustion engines to detect engine knock or detonation. The knock sensor detects vibrations and sends a signal to the engine control module (ECM), to ...

You'll need the sensor module R305 to read your fingerprint and a list of other connectors to link the circuit to your lock. ... An Arduino-based door knock sensor.