Since I first got my Arduino and some RGB LEDs I`d wanted to build myself a mood lamp with some funky features (note that I used the word funky and not useful). Well, I`ve finally done it, and here is the blog post describing how. For this project I used the Ikea GrG¶nG¶, which was £4. 99 when I bought it. It quite a nice matt glass finish, which
Click here to download the full size of the above Circuit.
helps to diffuse light, and also it comes with the glass shade and the actual light fitting separate from one another (I put the light fitting to one side as I won`t be using it in this project). The brightnesses above were only chosen because they were the highest that were available at a fairly reasonable cost. It might be better to match the brightnesses of all LEDs, although if memory serves, human eyes aren`t as sensitive to blue light as they are red and green, so it might be worth getting a brighter blue LED (I advise doing some more research). Firstly, LEDs tend to be highly directional (i. e most light goes in front of the led). There seem to be lots of diffusing and mixing lenses available at various shops, but I decided I`d have a go at just scuffing the LEDs with some sandpaper. I was quite happy with the diffusion of light after having done that, so my next step was to breadboard the LEDs out. I arranged them into a triangular shape with a common ground rail on the breadboard, and individual positive rails for each diode. Therefore resistors must be added to stop the components from being popped` (trust me, blown up LEDs stink). The required resistance can be easily calculated using Ohms Law V = IR. Although you can`t see it in that video, with only one LED of each colour it was far too hard to see when the surrounding light levels were high so I decided I`d add another led of each colour so they were arranged...
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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