Category Archives: Sensor
Clap On / Off Switch
This is the circuit diagram of Clap On / Off Switch. The circuit allows you to operate your lighting or any circuit device which use 24V / 3A maximum supply, simply by clapping your hands. It has a relay output that can be used to turn external devices on/off. This circuit is good and ideal for… Read More »
Water Level Indicator with Single 7 Segment LED Display
This is an unique water level indicator circuit which use 7 segment LED display to show the current water level in the water tank. Most water level indicator circuits for water tanks are based upon the number of LEDs that glow to indicate the current level of water in the water tank / container. This… Read More »
Simple Sensitive Tester for Infrared (IR) Remote Control
This kind of circuit is a helpful device for testing of infrared (IR) based remote control transmitters utilized for TVs and VCRs and so forth. The IR motions from a remote control transmitter are sensed by the IR sensor module in the analyzer and its output at pin 2 goes low. This thusly switches on… Read More »
Water Level Indicator using 7 Segment LED
Here the water-level indicator which use a 7-segment display, to show the water level (low, half and full) in the tank. Moreover, a buzzer is utilized to warn you of water overflowing from the tank. The circuit shows the water level by displaying L, H and F for low, half and full, respectively. The circuit… Read More »
Cell Phone Shield with Charger
This is the cell phone shield circuit which can be used as mobile charger. Give protection to your cell phone from unexpected use or theft working with this easy circuit. It is able to produce a loud chirping sound when someone tries to take away the mobile handset. The added function is that the circuit… Read More »
Shutter Guard
This is the shutter guard circuit which has sensitive vibration sensor, piezo-sensor. This circuit is specifically designed for outlets to defend towards theft. It can recognize any mechanical or acoustic vibration in its area when somebody attempts to break the shutter and instantly turn on a lamp and sound an alert alarm. A 15-minute time… Read More »
White Line Follower
This is the circuit diagram of white line follower toy. The actuator of the toy is the DC motor. This circuit can be used for a toy car to follow a white line, this circuit also known as very simple robot: “line follower without microcontroller”. The motor is either a 3v type with gearing to steer the car or… Read More »