matrix keypad pic mikroc library
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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This is a simple single-zone burglar alarm circuit. Its features include automatic Exit and Entry...
Completed STK465 is an amplifier of acoustic frequencies that offers qualitative output, using...
This simple audio power amplifier was originally designed for a circuit board workshop, conducted...
This project was a particular surprise for me in that the BC547 (equiv 2N2222) can be used to...
In recent years more and more, have a tendency ket demanded higher reimbursement structures with...
ICl is connected in the astable mode, driving RLA, C3, Dl, and D2 prevent spikes from the relay...
This is a design schematic to sensor the electromagnetic field. This circuit is based or built by...
This device is used to photograph moving objects by triggering a camera or flashgun when one or...
LCD comes in various configurations and the most popular one is 16x2 matrix display. This article...
This is a color sensor Circuit Diagram. This circuit will sense 8 colors that are:, green, red...
This circuit was designed to protect a dual rail power supply from shorts across the two rails....
This is a 9V DC power source, to a 555 timer to get a square wave. Then fed through a Half-Wave...
A Simple LED Voltmeter to Monitor the charge level in Lead Acid Battery or Tubular battery. The...
In some electronic applications we need to switch or control high voltages or high currents. In...
If possible, try to obtain TIP41 and TIP42 transistors, which are closely matched NPN and PNP...
The so-called soft start, refers to a circuit power, the output voltage through a startup process...
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