The presented digital timer is built in addition to the before mentioned ultraviolet light box.Indication is on 4 digits seven segment LED display.The timer counting backwards from 99 minutes and 59 seconds to 00:00.It is built with microcontroller PIC 16F84A and integrated circuit CD4511.Supply for the ultraviolet LED diodes are terminated with the help of [...]

Chris from pyroelectro  has made AV Test Box. This Box  includes displaying an 800×600 VGA test pattern as well as generating sound signals for testing audio systems. This video will you show what you can expect from this AV test box like the one built in this project and will show how quickly whether or [...]

Finally I found some time to create a project, I explored the google and I found one page with an interesting scheme on VGA interface.   So I made the pcb with eagle and I made it with the toner transfer method.   This project uses few parts, one microcontroller PIC16F84, one capacitor 100pf, one [...]

This is a good looking and practical device that can be useful in many areas where countdown timer is needed. This project is based on the PIC16F84A microcontroller. The time range can be adjusted between 1 and 999 seconds.   This project  has 3 buttons and one of them is named Set Button. In order to [...]

This example will show you how to build a PIC based simple memorization game system. With only a PIC16F84A and a few cheap components, you will train your brain first to understand a few basics about PICs, second to play to a not that easy memory game ! Source: micro-examples

Today we have a new category “Projects” and a new electronic  project 12 Channel LED Chaser with PIC16F84A. This project is based on the popular PIC16f84A micro-controller.The heart of this project LED chaser is the PIC16F84A PIC microcontroller.A 4MHz crystal and capacitors C1 and C2 22pf is used for providing clock pulses to the micro-controller. [...]

This project used the popular PIC16F84A microcontroller which is a program written in assembly language. GSM phone with which the device was tested by Siemens M35i (19200bps 8-N-1). The device has to work with other (older, cheap) Motorola phones such as S25, C35 (i), A65 and so on (X35, X45) … Source: Trax

This project (GSM controller ) is a device that allows you to control appliances using SMS messages. There are also 4 inputs for connecting sensors so the device will send an alarm SMS or even call you to report an alarm condition. Autor of this project has been successfully tested on: – Nokia 7110 (19200 [...]

How many times have you wished that you recorder your recent telephone conversation? I have, many many times. So thanks to [Trax] that he finally decided to make this happen by using PC and a piece of hardware (powered from USB) to record audio from phone line to MP3 format. He wanted this thing to [...]

This is simple thermometer with just few components. The brain is PIC16F84A and sensor is DS18B20. Range of sensor is -55 to 125°C is possible if ONLY the sensor is in that area not the whole device! Source: maco

This Programmer,programs pic16f84a and pic16c84 very simple and works fine. Source: maco