water drops. I`d always been drawn to time-lapse and macro photography, and it seems that the obiquitous water-drops are a common first step into this strange and wonderful photographic world. In researching it further however, it quite quickly became apparent that there would be more to this project that met the eye; the action takes place in a fraction of a second in a tiny space no
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more than 18 inches or so from your camera lens. Presented with these challenges, it seemed to me (and undoubtedly many before me) that there would be two ways you could go about photographing these tiny splashes. The first is simply to fix up your camera on a tripod, set up a reasonably predictable source of water drops and fire away at it. There are many people who have achieved great success with this approach, however not being blessed with the greatest amount of patience, I wanted to increase my hit rate. It`s for this reason that I went for the second approach; to control as many of the variables as possible using any and all tricks I could put my mind to. The challenge would therefore be to build, find or scrounge a detector that would be able to detect the moment a falling water drop began it`s descent, and then to wait a configurable period of time before triggering the camera`s flash and/or shutter - in other words a photogate/delay timer circuit. There are kits available such as those from HiViz. com, however I felt that the delay timers on these circuits were a little less controllable than I would like, and with my programming skills being somewhat better than my electronics skills, I decided to build a programmable circuit based on the Arduino Microcontroller. Additionally, controlling the delay timer from a PC or laptop would give me millisecond accurate control, and it would be much more repeatable than 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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