Components Tester with AT89C52
Posted on Jan 23, 2013
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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This project is one for the experimenter, but as shown will work extremely well. The sensing...
There is no PCB since there are no components to mount on one. the object was to create a source...
The mixer is the common "virtual earth" mixing amplifier, and there is nothing special about it....
Ql and Q2 switch the primary windings of transformer Tl via a square wave at a frequency...
How often on average do you have to call members of your family each day to tell them that dinner...
This tube tesla coil was built inside a CPU power supply unit. It was first built on a workbench...
The circuit is presented as a starting point - there will be some experimentation needed for each...
Many modern circuits tend to work from a single supply voltage of 3V. But often they need a...
Level refers to the relative strength of the signal and is measured in decibels. LINE level...
When the push button is pressed, a clock pulse appears on the CLK input of flip-flop IC1b. The...
Circuit shown in Figure 3-86. The line utilization time relay to control two motors, one of the...
Design, the front panel buttons to set the 10 number keys and the keys 0-9, move the key, down...
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