Courtesy light extender
Posted on Dec 12, 2012
New Circuits
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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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The circuit is a MOSFET based linear voltage regulator with a voltage drop of as low as 60 mV at...
Battery-operated, ionization chamber smoke detector includes a circuit to generate a unique alarm...
The circuit uses the primary current of a small 6 volt filament transformer to actuate a triac...
Here we have an astable oscillator built around 555, which gives an alarm tone of 1. 8 KHz...
Connect a pic to an rn-41 bluetooth module. I`m not the person who designed the PCB, so I can`t...
Used several KE 4-211-2 Sennheiser microphones to assemble a device for acoustic signal analysis....
With simplicity being the goal, brain-wave goggles can be constructed from suitable eyewear, such...
This project is output port expander of microcontroller 8051. In this project we will learn, how...
Here is the circuit diagram of an infrared motion detector that can be used to sense intrusions....
Here is the circuit of a fluid level indicator which shows each level in meaningful English...
Here is a simple frequency counter designed to monitor the 240VAC mains supply. It as a frequency...
In order to programm devices which run at 3. 3V (either SPI-based ones like AVRs or JTAG-based...
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