Digital Vacuum Gauge
Posted on Oct 10, 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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Touch operated switches are an attractive project for DIY electronics but they are not so common...
In essence, the circuit is nothing more than an auto ignition coil and a set of points which...
This tachometer can be set up for any number of cylinders by linking the appropriate timing...
The electronic bell needs no power supply. Most of the resistors are not critical, although C2,...
This converter enables reception of 800 to 1000 MHz on any scanner covering the 400 to 500-MHz...
2 x 18W Hi-Fi Stereo Power Amplifier based around two TDA2030 ICs. It has good input sensitivity,...
The Philadelphia, PA based Maker/hacker group Hive76 developed a tiny serial terminal using a TI...
Setting circles on an astronomical telescope are used as an aid to pointing the telescope at a...
Design a circuit in which a microcontroller produces a signal and then using an amplifier drives...
The GM Counter Accessory is shown below. It can generate a DC voltage upto 1 KV using the 5V...
This project creates a RGB LED VU Meter which is controlled via USB by a Windows 7 or Vista host...
This fast circuit is compatible with any amplifier that has a line or high-level input (radio,...
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