Multi Stage Simple Programmable Timer Circuit - 16F628A

Electronic delay timers are devices which are able to count and produce different time delay intervals as per the external settings. The elapsing of the set time is mostly indicated through an audible alarm to alert the user. Timers play an important role in our everyday life, whether it’s your cell phone, wall clock, TV/DVD sets, computers they are present everywhere. Usually an ordinary electronic timer is able to produce single-shot delay...

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Simple and Accurate LC Meter Circuit - 16F690

Digital LC Meter A LCR meter [Inductance (L), Capacitance (C), and Resistance (R)] is a piece of electronic test equipment used to measure the inductance, capacitance and, resistance of a component. Inductance is the property of an electrical circuit causing voltage to be generated proportional to the rate of change in current in a circuit. In Electronics, capacitance is the ability of a body to hold an electrical charge. Capacitance is also...

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MikroC Programming Guide

Microcontroller Programmer The purpose of this post is to provide basic information that one needs to know in order to be able to use microcontrollers successfully in practice. This post, therefore, doesn’t contain any super interesting program or device schematic with amazing solutions. Instead, the following examples are better proof that program writing is neither a privilege nor a talent issue, but the ability of simply putting puzzle pieces...

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Programmable Digital Seven Segment Timer Circuit - 16F628

Seven Segment Timer A timer is a specialized type of clock for measuring time intervals. By function, timers can be categorized to two main types. Those are Counts upwards and counts downward. Timers originally designed to fulfill a need in industry for a means of keeping time on certain devices. Originally, these timers were mechanical devices and used clockwork mechanisms as a means of keeping a regular time. The invention of two electromechanical...

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Digital LCD Speedometer and Odometer Circuit - 16F628

Speedometer In my previous post, I explained how to build a simple speedometer circuit using a micro-controller and seven segments. Read it from here. This is a further development of that circuit. This circuit indicates both speed and distance. A speedometer or a speed meter is an instrument that measures and displays the instantaneous speed of a vehicle. An odometer or odograph is an instrument that indicates distance traveled by a vehicle. Speedometer...

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Digital Seven Segment Speedometer Circuit - 16F628

Speedometer How Electronic Speedometers Work In Electronic speedometer, small magnets attached to the vehicle's rotating drive shaft sweep past tiny magnetic sensors (either reed switches or Hall-effect sensors) positioned nearby. Each time the magnets pass the sensors, they generate a brief pulse of electric current. An electronic circuit counts how quickly the pulses arrive and converts this into a speed, displayed electronically on the display....

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Simple LED Light Meter Circuit - LB1403

A light meter is a device having a light sensor at one end and a window at the other end which displays the reading that indicates the current light conditions. Light meters are often used in the fields of cinematography, photography and also in test cricket in order to determine the optimum light level for a scene. Using LB1403 IC and LDR, we can able to build a cheap light meter. LEDs are used to observe the current light conditions and variable...

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Simple Automatic Brightness Control Circuit

Automatic Brightness Control is the automatic adjustment of the exposure factors such as mA and V. ABC is used to keep the brightness of the display or bulb at a constant level. It involves the adjustment of the V and mA automatically depending on the part of the anatomy being examined. This can be achieved using a LDR, for instance, which monitors the ambient light and change its resistance this resistance changing use to adjust the V, the mA...

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Simple Power Guard Circuit - 12F683

Update 2015-10-05 Wrong circuit diagram - Fixed Power Guard This is a very simple and accurate power guard circuit. This circuit is useful to guard the electronic or electrical devices from mains transients and spikes. Very high spikes can develop at power on due to sparking in the switch and more serious effects occur when power resumes after a power failure due to high magnetic field in the distribution transformer. This will damage your...

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I2C FM Receiver Circuit with LCD - 16F88 BK1080

Digital FM Receiver This is a simple stereo FM radio receiver circuit that can scan with 87.5 MHz and 108 MHz seamlessly between 100 kHz step and it use BK1080 as a receiver IC. Main components of this receiver are a PIC16F88 micro-controller, 16x2 LCD and BK1080 FM receiver chip. This system is design to work with 5V DC power supply. User interface of this system consist with 6 push buttons and a 16×2 character LCD module. All the functions...

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PLL Synthesized FM Receiver Circuit with LCD - 16F88 LM7001

FM Tuner This is high quality stereo digital PLL synthesized FM radio receiver circuit that can scan with 76 MHz and 108 MHz seamlessly between 100 kHz step, although the sensitivity is high. Main components of this receiver are a PIC16F88 micro-controller, 16x2 LCD, LM7001 PLL Frequency Synthesizer, AN7223 IF Amp, TA7343 MPX and a FM Tuner. This system is design to work with 12V DC power supply and the LM7805 and 7808 regulators used to manage...

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Stereo Bass Booster Circuit with Simple Mixer

Bass Booster A Bass Booster is an audio device, which amplifies the low frequencies (bass) within the audio spectrum. This operates in a similar manner to an audio equalizer. General-purpose equalizers are often not effective at boosting very low frequencies, and therefore many electronics enthusiasts make their own circuit to achieve this purpose. Using following circuit you can boost frequencies below 60Hz. Schematic This circuit is an...

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10 Band I2C Graphic Equalizer Circuit - 16F628 TEA6360

Updated: 2016-08-17 - Added small application for calculate frequencies and parts. 10 Band Equalizer A graphic equalizer is a high-fidelity audio control that allows the user to see graphically and control individually a number of different frequency bands in a stereophonic system. A typical graphic equalizer consists of several audio filter/amplifiers, each centered at a specific frequency in the audio range. Most graphic equalizers have...

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