555 Rock lantern controller circuit diagram
Posted on Mar 28, 2007
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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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This circuit is based around the 555 timer circuit, used as an astable (free running) oscillator....
The analog to digital converter (ADC) is a commonly required in most of the projects. Analog...
The circuit is used to indicate two different water temperature trip points by turning on LEDs...
The figure shows the use of a CD4016 analog multiplex to multiplex the digital outputs back to...
The Maya used several calendars simultaneously. One of them called the "long count", is a...
Micropower and low-voltage op amps allow you to build high-performance analog-signal processors...
Difficult to observe in order to solve the leaning phase in adjusting the electric transmission...
Nokia BL-4C / BL-5C are 3. 7V, 700-1000mAh ( variants ) Lithium-ion batteries, have 3 terminals,...
This current-limiting circuit, shown in this example as part of a small bench power supply, could...
The LM35 of National Semiconductors that is used in this project is a precision centigrade...
This system includes a processor which may have been a microcontroller but it did not have alarge...
Here is a simple but effective intercom circuit that is based fully on transistors. The circuit...
1999 S10 2. 2L Fuse Box Quesion. There are two (what appear to be) main power terminals on the...
Calculates the difference between the two waveforms to arrive at what he believes is the voltage...
This includes immunity to power line transients as well as those that may occur during power-on...
200mA peak current letter phone photo camera flash circuit, using a AAT3110-4.5 electrical...
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