The circuits on this page are for an Infrared - Proximity Detector using the Vishay Electronics - TSOP4830 `IR Receiver Modules for Remote Control Systems`. In this circuit the TSOP4830 is used as a sensitive infrared detector that does not require shielding from room lighting. The detector will work under almost any lighting condition from comple
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te darkness to full sunlight. As a guide, if a TV remote control will work in a particular area then so should this circuit as the TSOP4830 would normally used in conjunction with a remote control for a television or VCR. This circuit was designed primarily for Between The Rails detection of model trains but can be used to detect other objects that reflect or block infrared light. While this circuit will work in almost all light conditions but it can be affected by infrared remote controls. For its designed use this will not be a problem as the light will be blocked by a train car anyway. The following schematic is for a basic version of the Infrared - Proximity Detector used on this page. The circuitboards offered through this page have 1 LED driver oscillator and 4 or 8 detector circuits on them. In the basic proximity detector circuit, the hand-held remote is replaced by an infrared LED driver that uses a 556 dual timer. The two oscillators in the 556 simulate the pulsed carrier signal of the remote but without the information such as volume or channel that would normally be sent to an appliance. The upper portion of the circuit uses two astable 556 oscillators, IC 1A and IC 1B to drive an infrared LED. IC 1A operates at approximately 3Hz with a duty cycle of about 9 percent. IC 1B is adjusted to 30 kHz (the design operating frequency of the TSOP4830) with a duty cycle of about 52 percent. The lower portion of the...
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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