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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 'TV modulator' is really no more than a transmitter. It is a very small transmitter,...
In its simplest form, a voice-over unit is just a microphone and change-over switch feeding an...
Originally I intended to have 32 faders. Once I tried fitting them on a veroboard, 32 seemed...
A unified thermometric controller that can be programmed with simple scripts, integrating the...
This unit is easily tunable and stable, consumes little power, and costs less than other types of...
Using this simple resistor circuit, you can trick your oscilloscope into displayin
The SLA7062/67 chip is a unipolar driver and can provide up to 3amps. The chip is hard to find...
The shortcoming of the inductive ballast is that volume and weight are larger, one`s own power...
Ambient light is increasingly being used as a source of energy. To help designers of such...
Considering a simple circuit like the one below. Let us say that the voltage source suddenly...
Once you discover how to setup an RS232 connection, it`s really just cut-and-paste for future...
The minimal Arduino circuit is dead simple. It relies on the internal 8MHz oscillator (like the...
A very simple controller circuit, with fairly smart performance! Can`t afford a fully automatic...
555 IC using a delay circuit of the four b They are a jump from high to low transition of the...
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