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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 signal emitted by an IR remote control contains two parts, the control pulses and a modulated...
This battery tester makes use of an LM3914 bar-graph driver IC. SI selects load on battery under...
This circuit offers 10- to 15-dB gain from 400 to 850 MHz and is therefore eminently suitable...
The back to back diodes are there because some radios present high voltage transients when...
As you can see, in this architecture the apparatus accept a big tolerance, so you can body it...
Piezo Disks, Audio Schematics and a Condenser Mic The schematics and diagrams here are provide...
Here we explain a couple RF 433kHz remote control chips especially designed for the purpose. The...
Here is the circuit diagram of a battery eliminator circuit that can be used as a replacement for...
This 9-minute timer switch can be used to control the light in a toilet or bathroom. The timer is...
Although a simple crystal oscillator may be built from one comparator of an LT1720/LT1721, this...
This device is used as a reminder to take medicine every day. This device actually contains a...
The solid-state, unity-gain power buffer is easy to imagine, as many already exist. But what...
Novel timing switch circuit in addition to a general timing circuit "Variable Timing"...
As shown in FIG receiver may help patients avoid missing voice in the daytime, only the receiver...
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