You will need 512 properly working LEDs in the lattice. They will need to be stable and bright. This step will show you how to separate the faulty ones from the usable ones. Lots of times there are broken LEDs, especially when they come in large packages. The damage may be noticeable but sometimes it is not. Start by bending the shorter leg (the cathode)
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at a 90 degree angle. Hook it up to a power supply and run 3V across it. You can do this with 2 AA batteries in series, but I had a power supply with alligator clips. Either way, just make sure the LEDs are working before you begin to solder. Create an 8x8x8 template so you can create the layers. You will need a peg board and you will need to drill holes into the peg board to space the LEDs 1/2" apart. I put foil over my rig to hold the LEDs in place so that they wouldn`t move while I solder, otherwise theywould jiggle to much. Use the LEDs to punch holes into the foil. The picture should show you how to do it, but basically have all of the LEDs in the row facing the same way. Begin with the corner first. The corner row should be 90 degrees facing the other way. You should also align each LED so it is just barely touching the next one. When you solder, don`t hold the iron more than 2 seconds on the LED, otherwise it can be damaged. Apply minimal solder between each LED. Cut a piece of wire longer than the length of your layer and strip off the insulation. Place the long, stripped wire into a vice and pull hard to straighten it. You can do this with another set of pliers as well. You should feel the wire get longer and straighter as you pull. Once it is straight enough, place it on the opposite end of the layer and solder it on the cathodes to stabilize the rear end. Do this once more for the middle section, as now it is...
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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