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This circuit is a relay driver that is based on a PIC16F84A microcontroller. The board includes four relays so this lets us to control four distinct electrical devices. The controlled device may be a heater, a lamp, a computer or a motor. To use this board in the industrial area, the supply part is designed more attentively. To minimise the effects of the ac line noises, a 1:1 line filter transformer is used.
PIC Controlled Relay Driver – [Link]
I started with a PicKit1. After using it for a while I moved on to this PicKit 2 PIC Microcontroller programmer. I have always loved this programmer, having a USB, a button, a couple LEDs, a potentiometer and a seperate ICSP programmer unit. It is also very fast. But, like I’m sure many of you, I quickly out-grew my PicKit2 programmer. There just isn’t enough real-world stuff on it. So I decided to add some.
Modding the PicKit2 - [Link]
The circuit make good use of the on-chip comparator in a single 12F675 PIC to detect the low level data and clock signals from the scales.
The firmware reads both 24 bit binary and 7 digit BCD output scales types, can switch the scale to fast or slow reading, zero the scale display and outputs the data in an easily readable format at 115,200 Baud.
Reading the data output from cheap digital verniers and scales – [Link]
This project is designed to show how to build time-dependant applications on PICs in C and to deal with restricted hardware. It will also help you to have a start point, if you need a simple way to add text to a PAL composite video signal in real time. With only an 8 pins PIC and a few cheap components, you can superimpose constant or dynamic text to a composite video PAL signal.
Pico OSD – a PIC video superimposer – [Link]
In this project we are building a JDM programmer that can handle PIC12, PIC16 and PIC18 family microcontrollers and some popular 24C family EEPROMs. The programmer also provides ICSP feature that allows In-Circuit Serial Programming. So if you desire, you will not have to carry your MCU each time when you reprogram it. The circuit is connected to the PC via serial port and no external power supply is needed. On the other hand, if you want to use it with a laptop that do not provide RS232 connection, using the circuit with a USB to RS232 converter may not give a proper result.
PIC and EEPROM Programmer – [Link]
The idea for creating a USB sound card based on a PIC came from discussions of other people creating one on the Microchip USB forum. The hardware of the card is based on all Microchip products. The software uses a modified version of the Microchip USB framework and is interrupt driven instead of the traditional polling. The device is a USB composite device as far as the hardware is concerned. The first device is an implementation of the USB Audio 1.0 interface and the other device is a custom interface based on WinUSB. The purpose of the custom interface is for programming the device serial number, upgrading the firmware, and in the future any other configuration that isn’t supported directly by USB Audio 1.0. The sound card runs at a sample rate of 48KHz, 32KHz or 24KHz selectable by the OS with 12 bits per sample. The quality approaches commercial grade as the sample rate is higher then CDs.
A Microchip PIC based USB sound card – [Link]
The Message Pump A.K.A. the USB to LCD Backpack is a device that allows you to connect a LCD display directly to your computer. It uses a PIC micro-controller, to drive the LCD and a FTDI USB to serial chip to connect to your computer.
The great thing about the FTDI chip is that it’s drivers are available for Macintosh, Windows, and Linux! The FTDI chip works by creating a VCP (virtual com port) and you may already have these drivers on your computer if you use an Ardunio Diecimila. If not, no worries they are free and and easy install.
Message Pump – USD to LCD - [Link]
One day while doing some research on something or another on the Web, I came across a link explaining how to connect a MicroChip PIC to a Nokia Cell Phone LCD Screen. Sounded cool; I had been playing with PIC’s and PicAxe’s anyway and thought it was knowledge that would be useful someday. Then I found a Nokia 5165 Cell Phone at an Electronics Flea Market (http://www.FrostFest.com) for $1.00, and at that price, I couldn’t pass it up! I knew I could hook the LCD up, but wasn’t exactly sure what I was going to do with it, when one day it struck me… PIC’s have an Analog Input (ADC) – I could make a very simple, little Oscilloscope! A “Minimalist Oscilloscope” – and thus The Minimalist Oscilloscope 08M Project was born.
The Minimalist Oscilloscope 08M Project - [Link]
The original schematic was developed by Radu Igret. It is a modification of a JDM-Programmer. This PIC-programmer has to be connected with the serial com port of your computer. This device don’t need any external power supply.
Build your own PIC-Programmer – [Link]
Did you have an old Nokia 1110 cell phone that keeps lying in the drawer, but you just don’t know what to do about it? Well, guess what! Is time to show off your creativity by combine the Nokia 1110 LCD with the PIC Interface (Yeah, it sounds like a cool idea, isn’t it?).
Before you starting the project, you have to make sure that your old Nokia 1110 LCD screen is in a good condition (Well, it would be better if the screen did not have any scratches). [via]
Nokia 1110 LCD and PIC Interface – [Link]
