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7x5 Dot Matrix Character Generator Featured Image

7×5 Dot Matrix Character Generator

In this post a basic character generator design based on PIC16F88 will be demonstrated. 7x5 Dot Matrix Display was used and its pin out is shown in the schematic below. Instead of using PIC16F876/7 microcontrollers PIC16F88 was chosen for this purpose ...
Digital Stopwatch Featured Image

Digital Stopwatch

In this article I’ll demonstrate a digital stopwatch design based on PIC16F876A micro controller.For related circuit based on Arduino click here. Similar project showing a Digital Timer design can be found here. Current circuit can be used to count in ...
3 Digit Dot Matrix Display SPI

3 Digit Dot Matrix Display SPI

3 Digit Dot Matrix Display with SPI interface is an advanced version of recently published 7x5 Dot Matrix Character Generator project. This design is more complex as it contains 4 microcontrollers. Three PIC16F88 were used to control 7x5 Dot Matrix Displays, ...
PIC16F 7-Segment SPI Display Featured Image

7-Segment Display with SPI PIC16F876A

For this project two PIC16F877 MCU's were used, see project schematics below. Slave PIC runs  LEDs decoding and multiplexing code on data received from Master. 7-Segment inputs connected to PORTC,B and common digits anodes to PORTB,A via 2N3906 collectors for ...
1Hz Clock Generator Featured Image PIC16F876A

1Hz Clock Generator using PIC16F876

In this article we’ll see how to generate 1 Hz clock with PIC16F876/877 PIC microcontrollers. 3 different approaches will be demonstrated. The most basic solution is to use nested loops to “waste” enough instruction cycle time in order to produce ...
10 Bit 7-Segment Digital Voltmeter Featured Image

10Bit 7-Segment Digital Voltmeter 0-24V

This is an upgrade to recently published Simple Digital Voltmeter.Few improvements were done to hardware and software.DVM operating range  was slightly increased up to 24 V Max, however the most significant change is that the code now uses full 10 bit of ...
PC Fan Controller Image

2 Channel PC Fan Controller

Following recently published article about building a PWM Fan Controller here is another simple controller design. This time it’s a 2 Channel PC Fan Controller for standard 12V Fans. It uses software implementation of PWM but instead of directly driving PWM ...
PIC C Programming Featured Image

PIC C Programming

In this article I’ll show you how to program Microchip PIC microcontrollers using HI-TECH PICC compiler and basic PIC development board. The board consists of PIC16F876A, LED bar graph and 20MHz oscillator. PICKIT3 compatible programmer was used to download the ...
Response Time Meter Featured Image

Response Time Meter

If you ever thought how fast you can react to external stimulus here is the circuit that can measure your response time. It measures the time it takes for you to press the push button in response to  turning the ...
Kinetic Watch Winder Featured Image

Kinetic Watch Winder

In this post I’ll show how to build a basic kinetic watch winder using PIC microcontroller and stepper motor. Kinetic watches do not require changing the battery as frequently as in quartz watch however despite their many advantages they have ...