In this article we are going to construct an GSM based LPG leakage SMS alert circuit using Arduino, which alerts the recipient via SMS and surrounding people via beep, when […]
MQ-135 Air Quality Sensor Circuit – Working and Interfacing with Program Code
In this article we are going to learn how to interface air quality sensor MQ-135 with Arduino. We will see overview of the sensor and construct a project which detects […]
How to Make a Transformer Winding Counter Circuit
The post details how to make a simple transformer winding counter circuit using ordinary LEDs and also through an advanced digital display circuit. The idea was requested by one of […]
Deep Soil Metal Detector Circuit – Ground Scanner
The post discusses a simple deep under soil metal detector circuit for evaluating hidden metals such as gold, iron, tin, brass etc by detecting change in the resistance of the […]
2 Simple Arduino Temperature Meter Circuits Explored
In this article, we are going to construct a couple of easy Arduino temperature meter circuits which can be also used as a LED room thermometer circuit. The circuit is […]
4 Best Touch Sensor Switch Circuits Explored
The post details 4 methods of building touch sensor switch circuits at home, which can be used for 20V appliances with mere finger touch operations. The first one is a […]