This Digital Alarm Speedometer Circuit. It allows us to appraise the acceleration of any article moving, abnormally cars and added vehicles. The acceleration is affected in kilometers per hour (KPH). Its affectation has three digits. This alarm works with the laser reflexion. It sends laser radiation to the article and this article reflects the la
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ser radiation to the radar. To appraise the acceleration of a vehicle, we charge be in advanced of it. In added words, the agent charge appear in our direction. The advanced of the alarm charge point the advanced of the vehicle. The alarm has the appearance of a pistol. In this radar, it has a laser LED and a laser diode. Both accept a lens. The laser LED can accelerate a atom of ablaze to a ambit of 90 m (295 ft). It`s actual important that the ambit ambit of the laser LED is 90 m, if not, the acceleration will not be affected properly. The laser diode, which receives the ablaze arresting by the laser LED, charge be able to ascertain the ablaze which is aforementioned blush as that emitted by the laser LED. The laser diode and the laser LED charge be placed one beside the other. They are adequate by a brave pane. They charge be placed at the advanced of the alarm and point the outside. The alarm is powered by a 9V array and it has a SPST about-face to ascendancy its ability state. The display, or the acceleration indicator, is placed at the rear of the radar, aloof on the appropriate of the afflict LED indicator. All the argumentation apparatus of the ambit charge be of the 74AS alternation and TTL type. Because they accept abbreviate time of acknowledgment (less than 1. 7 ns) and accept aerial abundance supports (more than 200 MHz). The alarm can appraise the acceleration of an article affective amid 0 to 999 km/h....
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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