There is now no need for a separate camera and recorder - for less money you can buy an integrated dash camera that will record in HD. Try the Techmoan blog for some reviews. Summary - this is a description of how to install a fairly cheap video recording system for use on track days etc, using a portable MPE
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G 4 recorder and a CCD `bullet` camera. A power supply design is also included, aimed at people with experience of building electronic circuits. The recording device is a Mustek PVR-A1. This is a gadget about the size of a Nintendo Gameboy which can play MP3s, display photos and videos and, most importantly, record video. It accepts a composite video and stereo audio input and encodes video in MPEG 4 format at a resolution of 320x240. The built-in memory is very small so you`ll need to buy a flash card (SD or MMC format) if you want to record a useful amount of video. The camera is a miniature CCD `bullet camera` with 380 lines of resolution. You can buy it from RF Concepts in a pack that includes all the cables and mounting hardware you`ll need. I chose to mount it on top of the CD storage box in the middle of the car. It is possible to run both the camera and PVR from batteries, but to avoid the problem of batteries suddenly running out I built a simple power supply to run everything from the the car`s lighter socket. This consists of a low dropout 12V regulator to provide a stable supply to the camera, and a 5V regulator for the PVR. Most of the parts are available from your local Maplin, except the L4940V12 which you can get from Farnell (order code 413-197. ) The circuit can be built easily on a small piece of stripboard. You may need to experiment to get the right size power connectors for the camera and PVR. Note I...
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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