August, 2007One of my other hobbies is photography, and, about a year ago, I purchased a new digicam a Panasonic FZ30. I joined the Panasonic forum on the dpreview site. One of the posters, a programmer and electronic hobbyist, designed a nifty wireless remote using a very inexpensive RF transmitter/receiver combination that he found on eBay.
Click here to download the full size of the above Circuit.
After he`d perfected that, he began designing an interval timer using a Radio Shack egg timer. At the time, I had just discovered the Picaxe 18X microcontroller. I realized that the PICAXE might make a good vehicle to power such photographic accessories, and that some sort of do everything remote might be a good project to learn how to use the PICAXE. Even better, the Picaxe is programmed in a very simple form of BASIC. Programs can be downloaded to the processor over a serial link from your computer ” no programmer is required. And the development system is a free download. In this case, a Picaxe is an ideal vehicle for gizmo design, since anyone can duplicate a project designed with one of these chips, and many can do design modifications or original designs with them. So, with a good deal of discussion with Bryan (linuxworks on dpreview), I conceived the remote described herein, one combining an RF wireless remote, intervalometer, real-time clock, externally-triggered remote, wired remote, and a camera power supply. Unfortunately, during the design phase, I received more and more suggestions for features from folks in the forum. Soon, my little Picaxe proof-of-concept project outgrew anything that could possibly be implemented on the little Picaxe. I decided, about a month ago, to have another try at this project. I knew that this was too much for the Picaxe 18X, but RevEd had recently introduced the Picaxe 28X1,...
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.....
characters left: