Open Source Automation Wiki
Posted on Feb 7, 2014
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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 following diagram shows the basic laser pointer circuit. It is identical to the infrared...
Connecting a LCD display to your personal computer is an easy job. Displaying data from your PC...
Under good battery conditions the LED is off. As the battery voltage falls, the LED begins to...
Choosing de rather than ac coupling can reduce much of the noise associated with preamplifiers...
LED1 and LED2 indicators turn on and remain on, each time the circuit is triggered. During the...
A complete schematic diagram of the voice disguiser is shown. Microphone MIC1 picks up the voice...
To operate a small motor used for opening and closing a pair of curtains. DC motor has six basic...
The Lifetime Drive, later renamed the Universal Drive after issues regarding implied warranties,...
A amplifier of force RF for the FM, is always essential for the amateur that wants it strengthens...
DS1307 is a hardware realtime clock, which works on I2C protocol. Better graphics using the same...
Fires the slave flash exactly when the main flash occurs. Some flash settings on digital SLR`s...
The JarLight is a small flashlight based on a white light emitting diode (LED). It is powered by...
Figure 16-29 (a) of the trigger output via a resistor R2; FIG 16J29 (b) for the introduction of...
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