detector

This is an idea for a light detection circuit,We use the 555 timer IC.Usually, we used to produce frequency (astable multivibrator) a lot easier. The single IC with a a few resistors and capacitors, adjust value them to control the frequency output.Can drive speakers directly, as the buzzer sounds.The CDs LDR is a resistor to [...]

This fairly simple circuit makes it possible to place such a wall as a conduit to locate. It is a conduit for power, no water or gas-seeker. The only requirement is that there is tension on the line. The antenna in the table can consist of a simple piece of copper wire. The correct adjustment [...]

With the incredible popularity of the “Electronic Dripping Faucet” kit, we figured we had to come up with something equally unique! Well, this one is unique…to say the least! How about an electronic cricket? Sounds just like those little black critters that seem to come from nowhere and annoy you with their chirp-chirp! But like [...]