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  Main » Sensor
Numeric Water-Level Indicator
Most water-level indicators for water tanks are based upon the number of LEDs that glow to indicate the corresponding level of water in the container. Here we present a digital version of the water-level indicator.   ... Read more »
Category: Sensor | Views: 3236

Water Activated Alarm

The circuit uses a 555 timer wired as an astable oscillator and powered by the emitter current of the BC109C. ... Read more »

Category: Sensor | Views: 1452

Voice activated switch

This circuit uses an MC2830 to form a voice activated switch ( VOX ).  ... Read more »
Category: Sensor | Views: 2445

Room Noise Detector
One LED monitors three levels: 50, 70 & 85 dB. Usefull to detect too noisy environments.  ... Read more »
Category: Sensor | Views: 1363

Digital Remote Thermometer
Remote sensor sends data via mains supply. Temperature range: 00.0 to 99.9 °C  ... Read more »
Category: Sensor | Views: 1761

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