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Category Archives: PIC Projects

Breakout board for PIC16F1847 microcontroller

Posted on August 9, 2012 by R-B 13 comments

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

Add a reminder to your washer

Posted on July 11, 2012 by R-B Leave a comment

Most washers don’t have a built-in reminder. Mine doesn’t have either and a lot of time I have forgot my clothes inside it after they are done. The wet clothes smell really bad if they are left inside the washer for a while. If you have a similar issue with your washer, you might want to build this project which adds an audible reminder to the washer that will beep when the clothes are done. This project is based on an accelerometer that continuously senses the vibration of the washer when it is running. When the clothes are done, the washer stops

Temperature and relative humidity display with adaptive brightness control

Posted on July 3, 2012 by R-B 9 comments

The objective of this project is to illustrate a technique of implementing adaptive brightness control to seven segment LED displays. It consists of a closed loop system that continuously assesses ambient light condition using an inexpensive light-dependent resistor (LDR) and uses that information to adjust the brightness of the display. For the proof of concept, the technique is applied to construct a digital temperature and relative humidity meter that adapts the brightness of the seven segment LED displays to the surrounding lighting conditions. There are 8 seven segment LED displays used in this project and they are all driven by

Dual 4-digit seven segment LED display with SPI interface

Posted on June 26, 2012 by R-B 2 comments

This project is an extension of my previous MAX7219 based SPI seven segment LED display module. The new display features eight 7-segment displays arranged in two rows of four digits. The on-board MAX7219 driver enables you to easily add eight 7-segment LED displays to your project using only 3 I/O pins of microcontroller. The major advantage of using this board is the time-division multiplexing operations required for continuous refreshing of the display digits are performed by the MAX7219 chip, thereby keeping the microcontroller free for doing other pressing tasks. It is suitable for displaying two variable values simultaneously in a

PIC12F microcontroller project board

Posted on June 23, 2012 by R-B 10 comments

The 12F series of PIC microcontrollers are handy little 8-pin devices designed for small embedded applications that do not require too many I/O resources, and where small size is advantageous. These applications include a wide range of everyday products such as hair dryers, electric toothbrushes, rice cookers, vacuum cleaners, coffee makers, and blenders. Despite their small size, the PIC12F series microcontrollers offer interesting features including wide operating voltage, internal programmable oscillator, 4 channels of 10-bit ADC, on-board EEPROM memory, on-chip voltage reference, multiple communication peripherals (UART, SPI, and I2C), PWM, and more. The following project board is designed for fast

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