All of the parts in this list are generally available through Radioshack for less than $20. I highly recommend using breadboard! You`re bound to make mistakes your first time and soldering it will only make your fail worse (double fail ). I`ve compiled this tutorial into two `methods`, one is the classic schematic and the other is a step by step g
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uide. Also, if you`re new to electronics read through this post before you make the circuit. - 6-15V (AA, or correct PSU)* - 2 1K ohm resistors - 1 100 ohm resistor - 1. 01uF capacitor - 1 470uF capacitor (variable) - 1 10K ohm potentiometer (optional) - 1 555 IC Linear Timer - X LEDs (it`s up to you, IR <=6) - 22-26g wire - pc board (breadboard for testing) - solder & iron - project box (optional) - switch (goes before circuit on + wire) *If you go less than 12v and you intend to use this in your car you need to compensate for the extra voltage that will be going to the circuit. Oh, I got a genius idea. To make an old CD-rom drive spinner motor work, you have to fire all the wires in series around the motor. So, what you could do is take a 555 and a decade counter and make an LED sequencer circuit. Then instead of wiring it to LED`s, wire it to each terminal on the CD-rom motor. I would be sure to use the POT to adjust the pulse rate, thus motor speed. This is only a theory, but if one of you try it, post results. I may try it myself.
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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