In this post we learn how to build a very simple GSR sensor circuit using just a couple of transistors and a few other passive components. A GSR (Galvanic Skin […]
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Footsteps Detector Circuit
By sensing vibrations from footfall, a Footsteps Detector Circuit is a creative and affordable approach for catching intruders. It employs a simple setup with a low-cost loudspeaker and a mute […]
Vibration Sensor 801S Datasheet Explained
The 801S vibration sensor is a typical vibration detection and measurement module. The following are some of its main technical features, datasheet and characteristics: Datasheet in Details The 801S vibration […]
ON/OFF Relay Switch Circuit using Reflection Sensor
This 220 V ON/OFF electronic relay switch can be toggled ON/OFF simply by alternately bringing your finger close to the reflection sensor CNY70. About CNY70 CNY70 is an infrared reflecting […]
Simple Vibration Sensor Circuit
As its name suggests, this simple vibration sensor circuit using piezo transducer allows for the detection of vibrations to which its sensor is subjected. Unlike superficial pressure sensors whose resistance […]
Mains AC Current Detector Switch Circuit
The circuit presented in this article allows one to detect the current consumed by a device and to power one or more other devices accordingly. Indeed, the solution of a […]