Flashing warning light produced by light control NE555 circuit
Posted on Mar 28, 2007
New Circuits
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This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of.... -
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is.... -
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to.... -
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This.... -
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the.... -
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,.... -
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the.... -
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power.... -
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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When the input voltage is 0 the LED glows. The LED stops glowing when the voltage rises to the...
This is a portable oscilloscope adapter that it can be held in breast pocket. Its operation is...
Adding a diode, a resistor, and a capacitor to the SAW (surface-acoustic-wave) oscillator allows...
This simple window detector uses only half of a 7400 quad NAND gate plus four resistors, chosen...
An IBM PC can operate the two 12-bit A/D converters in Fig. 1 via its printer port. The...
The slot machine`s realistic action is provided by seven ICs and three displays, as shown. Two...
The A2045 uses the same circuit as the A2052. Instead of mounting with three snap-top standoffs,...
If the instruments have power when you turn on the key, then I would check the neutral safety...
All about the famous Corsair and Commando Transmitters designed by Dave Martin of WNKR. This blog...
This circuit is connected to your motorcycle. It`s tapped into a circuit thats only powered with...
This can also be called a poor man`s hearing aid because it can be constructed from some low cost...
The hardest part for this circuit was the title. It is quite easy to miss the sound of a doorbell...
Using TOP269EG off-line switcher IC, (U1), in a flyback configuration can be designed a very...
This circuit can be used to operate an electric strike or an electromagnetic lock on a door. It...
I make a real-size printout of the PCB in order to verify dimensions of all parts against it....
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