Automated Crib Lights
Posted on Dec 16, 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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A follow up Mk2 version described by EA`s Jim Rowe in the May/June/July 94 issues of EA improved...
This circuit is designed to provide an inexpensive way to to create a High Impedance Voltmeter...
The logic designer is filled with features. It would not be possible to list all the possible...
Switch programmable on/off or interval timer, has three relay-switched outputs. Output one is...
Studying current measurement is a prerequisite for many of the measuring techniques. The current...
When 12V DC from the car battery is applied to the gadget (as indicated byLED1) through switch...
Many circuits can be powered directly from the mains with the aid of a series capacitor (C1). The...
The reception of 2 metre signals is generally with a converter and short wave receiver,...
Here`s a circuit diagram of automatic muting for audio systems using IC LB1403. The signal from...
The circuit given here is of a three input mic mixer cum preamplifier using the IC LM348. The...
The 100W4 is a two tube medium frequency transmitter with provision for pre-tuning to three...
When you press a start button, the arduino picks a random 4 diget code and flashes lights to show...
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