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 ...
DC Motor Controller
This post is about building a simple PIC16F88 based DC motor controller. Motor speed and direction can be controlled by two push buttons SW1, SW2. One for motor speed and the other for polarity. This post follows recently published projects like PWM ...
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 ...
Simple Digital Voltmeter
Simple digital voltmeter can be built by using PIC microcontroller and a few discrete components. PIC16F877A 10 bit ADC module was used for this purpose, we’ll work only with 8 upper bits to translate input voltage to digital form and ...
Digitally Controlled Power Supply 2
This is an update to a recent post on a subject of building a Digitally Controlled Power Supply. In part 1 a basic configuration was presented. In this version a numbers of modifications were made to software/hardware to produce a more advanced ...
Alphanumeric Display Driver
In this post I’ll show how a single alphanumeric display can be driven by PIC16f877A micro controller. There are dedicated IC’s for this purpose however a micro-controller can be programmed to perform this task. By using a microcontroller you'll get a ...
3.5 Digit Dot Matrix LED Display
In this post I'll show you how two QDSP-L149 5x7 dot matrix LED Displays can be used to create a 4 Digit display module. The trick is to change the roles of rows and columns. So now each 5x7 Dot ...
BCD to 7 Segment Display Decoder
In this post I'll show how you can drive 7 Segment LED display with PIC16F876A. Instead of using a dedicated IC’s like 4511 we’ll program the micro controller to convert BCD input code 0 – 9 to a 7 Segment LED ...
7-Segment LED Display with I2C
In this post we’ll add a serial data transfer capability to a standard 7-Segment LED Display by using PCF8574 I/O Port expander IC with I2C interface.For similar design based on Arduino see this link. Usually in order to minimize required ...
128×64 LCD Display
A few weeks ago I’ve uploaded post with relatively simple assembly code example for interfacing 2x16 LCD display with PIC16F microcontrollers. Driving Graphic LCD display is more complex task as it lacks the build in character generation unit so each pixel needs to ...
