Sensors and Detectors

No button needed as this circuit uses a smart chip known as TTP223 to feel our touch. Like magic it touches the pad and it turns ON or OFF This Simple Capacitive Touch Switch Circuit using IC TTP223 is an easy way to make a touch switch for fun or projects. Circuit Working: Parts List: […]

Automatic Soap Dispenser Circuit is like robot for soap. Inside it have a special plan like electric circuit with small parts. It has got sensor like small eyes, brain chip like microcontroller, and pump like tiny muscle. When sensor sees our hand its brain tell pump Give soap! and it gives the right amount. Circuit […]

Simple Bedwetting/Wet Diaper Alert Circuit is one special electronic helper! It know when someone pee in bed or diaper and then it make sound like doorbell ding ding! So parents or helper can know fast and come for help. Good for kids who pee in bed at night or people who need more help for […]

This one is a special and Simple Skin Biofeedback Circuit which help people learn about skin. It uses sticky pads put on skin to catch small electric signal. Signal change when person feel more calm or is not calm. The circuit show this change maybe with light or sound so person can learn to relax […]

This Pressure Sensor Alarm Circuit talks about one electronic device which can feel when pressure goes up or down. Think of a one special plate like doormat, pressure increases when someone steps on it. Or if there is a change in air pressure inside the machine then this device is capable of knowing that. If […]

Simple Vibration Sensor Circuit is like small touchy friend for electronics. It is felt when we shake or quick move happen and then it sends the electric signal. This is good for use in thief alarm to feel someone come in or for earthquake to feel ground move. Also we can use it in factory […]