Magnetic Switch
Electronics Projects
Here is a simple Electronic Switch which can be operated by any Magnetic Field.  It can serve purpose of REED Switch with little modification using a relay because it can not directly drive electrical loads as their output drive capabilities are very small around 10 to …
Temperature Sensor
Electronics Projects
This project uses IC LM35 as a sensor for detecting accurate centigrade temperature. Linearity defines how well over a range of temperature a sensor’s output consistently changes. Unlike thermistor, Linearity of a precision IC Sensors are very good of 0.5°C accuracy and has wide temperature …
Temperature Display Using LCD
Arduino Projects
Here is a Simple Temperature Display Circuit using LCD (Liquid Crystal Display). For Heat Sensor we have used IC LM35 (Precision Centigrade Temperature Sensors) whose Output voltage is linearly proportional to the Celsius (Centigrade) temperature. Output of LM35 IC is 10mv/degree centigrade for eg if …
Clap Switch
Electronics Projects
   Here is a Hobby Circuit for electronics hobbyists that can switch on & off a light, Fan, Radio etc., by the sound of clap. The sound of clap is received by a small microphone that is shown biased by resistor R1 in the circuit. …
Burglar Alarm
Audio and Siren
The circuit illustrated here is used as  Burglar alarm. LDR is kept at such a place that when thief enters our house then a shadow will fall on the LDR. A small beam of light source is also needed to supply continuous signal to LDR. …