DS1302 Real Time LCD Clock Circuit - 16F88

Clock Schematic This clock use DS1302 as timekeeping chip and this was my first time I used this IC for my project. It used three wires for communication. It communicates with a microprocessor via a simple serial interface. Three wires are required to communicate with the clock/RAM: CE, I/O (data line), and SCLK (serial clock). The real-time clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The DS1302 will...

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Seven Segment Simple Digital Clock Circuit - 16F628

Clock Schematic This is a very simple clock circuit. The only IC used in this circuit was 16F628A pic micro-controller. This IC is very cheap and you can get it from any electronic spare parts shop. Four common cathode seven segment displays used to display time. We cannot get much accurate time using this. However, we can able to get reasonable accurate if we calibrate this circuit correctly. You can calibrate this clock by changing value of...

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Common Remote Control Receiver Circuit (RC5 SIRC NEC) - 16F683

General Remote Controller The cheapest way to remotely control a device within a visible range is via Infrared light. Almost all audio and video equipment can be controlled this way nowadays. Due to this wide spread use the required components are quite cheap, thus making it ideal for us hobbyists to use IR control for our own projects. If you ever want to open your gate or run any other device via remote controller you can use this circuit...

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7 Band Real Time Audio Spectrum Analizer Circuit - 16F818 BA3834 MSGEQ7

Audio Spectrum Analyzer Spectrum analyzers are built in most of the modern signal processing systems for measuring the distribution of signal energy in frequency. An audio spectrum analyzer is used for measurements in the audible frequency spectrum (from 20Hz to 20 kHz) and can be a very powerful tool for keeping a studio well tuned. A Digital, real-time Audio Frequency Spectrum analyzer circuit for audio devices is presented in this project....

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DS1307 Real Time Seven Segment Alarm Clock Circuit - 16F88

Updates 31/01/2016 - Added: Hourly chime restriction function 27/10/2019 - Fixed: Hourly chime delay error (v3) 27/10/2019 - Fixed: Auto mode data showing time increased (v3) Alarm Clock This is the newest clock I made using DS1307 real time clock IC. Not like other clock circuits I posted, this clock circuit built in all necessary function such as hourly chime, alarm, time drift correction, etc. In addition, it also include temperature...

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LM35 Simple Thermometer Circuit with LCD - 16F818

Thermometer In modern world, analog equipment and device are converting in to digital format. To do this mostly used sensors. There are many cool sensors available now days, ranging from IR distance sensor modules, accelerometers, humidity sensors, temperature sensors etc. but many of these sensors are analog in nature. That means they give a voltage output that varies directly (and linearly) with the sensed quantity. For example in LM35 temperature...

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Simple LCD Spectrum Analizer Demo Circuit - 16F628

Spectrum analyzers are widely used within the electronics industry for analyzing the frequency spectrum of radio frequency, RF and audio signals. Looking at the spectrum of a signal, they are able to reveal elements of the signal, and the performance of the circuit producing them that would not be possible using other means. Audio spectrum analyzer shows you a detailed picture of what you are hearing in real-time, that is, as it happens. You...

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Digital Combination Lock Circuit with Keypad and LCD - 16F628

Digital Lock Now day’s ordinary locks are replace with digital locks. Those have very advanced features such as digital display, keypad, fingerprint recognized etc. Therefore, I decided to build basic digital lock with LCD display and keypad. This is a micro-controller based digital lock circuit and it used PIC16F628A. 16x2 LCD is used for the display information and keypad is used for enter the code. (#) will clear the code and (*) will enter...

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Scrolling Seven Segment Display Circuit - 16F628

Preview Many electronic hobbyists are very much interested about build scrolling displays. Most of the time this circuits used matrix displays. However, its cost is high and almost complex to build. Therefore, I try to build a scrolling displays circuit using the seven segments displays because these are cheaper than matrix displays and we can be easily build circuit. This circuit is very simple. To build this circuit I used PIC16F628A micro-controller...

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Multi Function Digital Meter Demo Circuit - 16F88

Generic Multi Function Meter This project is about a build simple digital multi function meter using a PIC16F88 micro-controller and a 16x2 LCD display. The range of voltage can measured is 0 - 50V, but you can change it easily. This circuit, operation and below code was not tested and only simulated one using Proteus software. you can download full project files including MikroC source file and Proteus schematic. This is only a...

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4 Digit Seven Segment Up Counter Circuit - 16F628

In the past I posted a counter and timer circuit and it is used two seven segment displays to display number and it can only count 0-99. you can see it from here. This circuit was developed version of it. This project shows cheap and accurate up counter and it can count up to 9999 and then it will start from 0. For this circuit i used PIC16F628A micro-controller and four common cathode seven segment displays. Any 7-Segment displays will work in...

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Infrared Remote Control Transmitter and Receiver Circuit - 16F628 12F683

Updated [Sep 14, 2014] Fixed some bugs on IR_Tx.hex Increased Accuracy This is a general purpose remote control project with 16 channels and using PIC16F628 for transmitter & 12F683 for receiver side. Remote controls usually consist of encoder/decoder parts connected to a transmitter/receiver module which takes care of the transmission of digital signals by radio or infra waves.The transmitter has a varying number of buttons and sends the...

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