Suitable for beginners. Build a simple, but widely applied.
This is two tone alarm use op-amp IC, LM3900 (Quad Amplifiers). It produces the frequency of square wave in 2 level. It is high frequency and low then mix the…
The CCD camera sensor is device that have very useful. This project has small size. But quality is a lot good. We can install with Television easily
This circuit is a Fuse status indicators for power supply 12V. If a fuse is normally, the LED is going to lights all the time. But when it lacks, the…
The Fuse failure alarm with 2 led light that LED display when the load is low resistance or short circuit, fuse blow once. LED1,LED2 show fuse state. In circuit use a few parts.
This is PIR motion sensor circuit. The movement lasted only one. the detection accuracy of Pyroelectric. As product of a Passive infrared detector PIR. [...]
build the Ultrasonic sensor circuit project with versatile controls. to radar systems, when we send out the waves, then detects the reflected back.