Monthly Archives: August 2012


0-9999 seconds count down timer using PIC12F683 microcontroller

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The goal of this project is to construct a simple 0-9999 seconds count down timer with an alarm and a display. The time is set through two tact switches and the count down seconds are displayed on a 4-digit seven segment LED display. The project uses PIC12F683 microcontroller for all I/O and timing operations and MAX7219 IC for driving the seven segment LED module. The time out condition is indicated by an audible alarm from a buzzer.

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EasyPIC Fusion v7: A single development board for dsPIC33, PIC24 and PIC32 architectures

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MikroElektronika has released EasyPIC Fusion™ v7 development board that supports three different Microchip processor families: dsPIC33, PIC24 and PIC32. The board is equipped with mikroProg, a fast USB 2.0 programmer and debugger. The board contains Ethernet, CAN, two USB-UARTs, USB host and device connectors, Piezo Buzzer, microSD card slot, stereo mp3 codec, sockets for temperature sensors, analog inputs and much more. Each microcontroller I/O pin is connected to 2 male headers, push button and LED, making it ready for all kinds of development.

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chipKIT Tutorial 5: Pulse width modulation (PWM)

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Pulse width modulation (PWM) is a technique of controlling the amount of power delivered to an electronic load using an on-off digital signal. The key idea behind this technique is that the average DC value of the digital signal, and hence the power delivered to the load, can be varied by varying the duty cycle of the signal. This method is commonly used for controlling speeds of DC motors and brightness of lamps. The switching mode power supplies are also based on the PWM technique. In this tutorial, we will discuss about the PWM pins of the chipKIT Uno32 board

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Tilt sensing illustration with DE0-NANO FPGA board

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After building a 40 pin breakout board for the DE0-Nano Chris from PyroElectro wanted to test it out with something fun but not overly complex. So he decided to try something fun with an accelerometer available on the DE0-Nano board. In this tutorial, he shows how an accelerometer works, how it can be used to detect tilt and also how the tilt ‘value’ can be visually displayed on a large array of LEDs.  

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Breakout board for PIC16F1847 microcontroller

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This is an improved version of my 18-pin PIC16F series breadboard module that I have used in many of my PIC tutorials and projects published in this website. The new version has got a +5V power supply regulator on-board and a 2.1mm female barrel jack for DC input from a wall adapter. The 18-pin PIC16F series microcontrollers are still very popular among hobbyists and beginners because of their compact size, low cost, and simplicity. The PIC16F1847 is the latest release in this series and is equipped with lot more peripherals and enhanced features than its predecessors. This breakout board will be helpful

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