Use some tiny blinking LED`s as fireflies. It takes a bit of electronics skill to do this project but it comes out really wonderful. LED`s are tiny Light Emitting Diodes. Thisis a picture of one of the LED`s I used for this project. It is rather small but it really emits a strong light. This is exactly what is used on many electronic devices like tv`s, and stereo`s. If you have an electronic device that has a little red,
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yellow, green or other color light on it that is an LED. The type I used for this diorama is a blinking style. If you apply to it the voltage from a battery it will automatically blink and in a random pattern so all the LED`s (fireflies) I have in my diorama blink randomly which makes it really nice. About 10 feet of thin wire similar to telephone wire. Approximately 24 gauge if you know wires and electronics. 5 feet of red and 5 feet of black I used telephone wire, stripped off the sheating and used the black and red wires inside it. LED`s are rather sensitive to the current that flows through them and if you connect a battery directly to them you will ruin them. So you really need to attach resistors to each one in order to keep them controlled and operating. If you are going to do this project I recommend you get extra LED`s and a few different value resistors so you can experiment a bit before you actually wire them into your shoebox diorama. Update on this wiring diagram: I got a terrific and very helpful email from Grenathor who re-designed this circuit to make it much more efficient. The diagram above is the re-done circuit and here is what he has to say: The resistor has to be connected in series with the LED. By doing this, you limit the current that will flow through the resistor tothe LED. By varying the resistor, you will be able to vary the LED`s intensity, making it brighter or darker. A standard LED needs...
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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