Here is the remote control tester circuit. This circuit is really a simple and easy tester for verifying the basic operations of an infrared remote control unit. It is low-cost and very easy to construct. The […]
Category: Sensor
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 […]
Tone Detector / Sound Activated Switch
The following circuit diagrams are tone detector circuit diagrams which also known as sound activated switch circuit. Actually, these circuits? use microntroller for switching because the circuits were designed for robot start up activation. But you […]
Simple and Low Cost Dew Sensor
This is a simple and low cost dew sensor circuit that can be used to switch off any gadget automatically in case of excessive humidity. Dew (condensed moisture) adversely affects the normal performance of sensitive electronic […]
Proximity Infrared Detector
This is the simple circuit of proximity infrared detector, proximity sensor based? infrared. The applications of this circuit are the most varied. From placing it in the front door to prevent people stop in front of […]
Light Alarm with Timer 555
Here is the simple and low cost light alarm circuit built using timer IC 555 as the sound generator and a LDR to sense the environment light. This alarm is activated when the light beam on […]
Aquarium Temperature Probe
This is the electronic circuit diagram of aquarium temperature probe capable to monitor the temperature of water and indicate the rise in temperature through audio-visual indicators. This circuit uses diode 1N34 as the temperature sensing probe. […]
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 […]
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 […]
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 […]